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       Plastic Reference Data

Polyacrylonitrile-butadiene-styrene (ABS)

Common Brand Names : Cycolac, Lustran, Novodur, Ronfalin

Density.......................................................................... 1.05 g cm ^-3

Flammability.................................................................. HB at 1.5mm

Limiting Oxygen Index................................................... 19 %

Water Absorption - over 24 hours.................................. 0.3-0.7 %

Dielectric Constant at 1MHz.......................................... 3.2-3.3

Dielectric Strength......................................................... 20-25 kVmm ^-1

Dissipation factor .......................................................... 0.02

Volume Resistivity......................................................... >10¹⁵ Wcm

Heat-Deflection Temperature - 0.45MPa ...................... 98°C

Heat-Deflection Temperature - 1.8MPa ........................ 89°C

Thermal Conductivity at 23°C........................................ 0.17 W m^-1 K^-1

Thermal Expansivity...................................................... 80 x10^-6 K^-1

Upper Working Temperature......................................... 70-100°C

Coefficient of friction...................................................... 0.5

Elongation at break ....................................................... 45 %

Hardness - Rockwell ..................................................... R100-110

Izod Impact Strength..................................................... 30-35 Jm^-1

Tensile Modulus............................................................ 2.1-2.4 GPa

Tensile Strength............................................................ 41-45 MPa

Acids - dilute.................................................................. Good

Alkalis............................................................................ Fair

Aromatic Hydrocarbons ................................................ Poor

Halogens....................................................................... Fair

Ketones......................................................................... Poor

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Polyoxymethylene - Copolymer

Common Brand Names : Celcon, Hostaform, Kemetal, Ultraform

Density.......................................................................... 1.41 gcm^-3

Flammability.................................................................. HB

Limiting Oxygen Index................................................... 15 %

Resistance to Ultra-violet .............................................. Poor

Water Absorption - over 24 hours.................................. 0.2-0.25 %

Water absorption - Equilibrium ...................................... 0.6-0.8 %

Dielectric Constant at 1MHz.......................................... 3.7-4.4

Dielectric Strength......................................................... 20 kV mm^-1 @ 2.3mm

Dissipation factor .......................................................... 0.006-0.18

Surface Resistivity ........................................................ 10¹⁵ W/sq

Volume Resistivity......................................................... 10¹⁵ Wcm

Heat-Deflection Temperature - 0.45MPa ...................... 160°C

Heat-Deflection Temperature - 1.8MPa ........................ 110°C

Lower Working Temperature......................................... -40°C

Specific Heat................................................................. 1.5 kJkg^-1 K^-1

Thermal Conductivity at 23°C........................................ 0.23-0.3 Wm^-1 K^-1

Thermal Expansivity...................................................... 80-120 x10^-6 K^-1

Upper Working Temperature......................................... 80-120 °C

Elongation at break ....................................................... 15-40 %

Hardness - Rockwell ..................................................... M80

Izod Impact Strength..................................................... 70-80 J m -1

Tensile Modulus............................................................ 2.3-2.8 GPa

Tensile Strength............................................................ 60-70 MPa

Acids - concentrated ..................................................... Poor

Acids - dilute.................................................................. Poor - Good

Alcohols ........................................................................ Good

Alkalis............................................................................ Fair - Good

Aromatic Hydrocarbons ................................................ Good

Greases and Oils .......................................................... Good

Halogens....................................................................... Poor

Ketones......................................................................... Good – Fair

Polyoxymethylene - Homopolymer

Common Brand Names : Delrin, Tenac

Density.......................................................................... 1.42 g cm^-3

Flammability.................................................................. HB

Limiting Oxygen Index................................................... 15 %

Resistance to Ultra-violet .............................................. Poor

Water Absorption - over 24 hours.................................. 0.25 %

Water absorption - Equilibrium ...................................... 0.6-0.9 %

Dielectric Constant at 1MHz.......................................... 3.7

Dielectric Strength......................................................... 20 kV mm^-1

Dissipation factor .......................................................... 0.005

Surface Resistivity ........................................................ 10¹⁵ W/sq

Volume Resistivity......................................................... 10¹⁵ Wcm

Heat-Deflection Temperature - 0.45MPa ...................... 170°C

Heat-Deflection Temperature - 1.8MPa ........................ 135°C

Specific Heat................................................................. 1.5 kJ kg^-1 K^-1

Thermal Conductivity at 23°C........................................ 0.22-0.24 Wm^-1 K^-1

Thermal Expansivity...................................................... 122 x10^-6 K^-1

Upper Working Temperature......................................... 80-120°C

Coefficient of friction...................................................... 0.2-0.35

Elongation at break ....................................................... 40-75 %

Hardness - Rockwell ..................................................... M94

Izod Impact Strength..................................................... 75-130 Jm^-1

Tensile Modulus............................................................ 2.9-3.1 GPa

Tensile Strength............................................................ 70 MPa

Acids - concentrated ..................................................... Poor

Acids - dilute.................................................................. Poor - Fair

Alcohols ........................................................................ Good

Alkalis............................................................................ Poor

Aromatic Hydrocarbons ................................................ Good

Greases and Oils .......................................................... Good

Halogens....................................................................... Poor

Ketones......................................................................... Good – Fair

Cellulose Acetate (CA)

Common Brand Names : Clarifoil, Dexel, Tenite Acetate

Density.......................................................................... 1.3 gcm^-3

Flammability.................................................................. Combustible

Limiting Oxygen Index................................................... 19 %

Refractive Index ............................................................ 1.49

Resistance to Ultra-violet .............................................. Good

Water Absorption - over 24 hours.................................. 1.9-7.0 %

Dielectric Constant at 1MHz.......................................... 5

Dielectric Strength......................................................... 11 kVmm^-1

Dissipation factor .......................................................... 0.06 @ 1kHz

Volume Resistivity......................................................... 5x10¹² Wcm

Heat-Deflection Temperature - 0.45MPa ...................... 52-105°C

Heat-Deflection Temperature - 1.8MPa ........................ 48-86°C

Lower Working Temperature......................................... -20°C

Specific Heat................................................................. 1.2-1.9 kJkg^-1 K^-1

Thermal Conductivity at 23°C........................................ 0.16-0.36 Wm^-1 K^-1

Thermal Expansivity...................................................... 80-180 x10^-6 K^-1

Upper Working Temperature......................................... 55-95 °C

Abrasive Resistance - ASTM D1044............................. 65 mg/1000 cycles

Hardness - Rockwell ..................................................... 34-125

Izod Impact Strength..................................................... 100-450 Jm^-1

Tensile Modulus............................................................ 1.0-4.0 GPa

Tensile Strength............................................................ 12-110 MPa

Acids - concentrated ..................................................... Poor

Acids - dilute.................................................................. Fair

Alcohols ........................................................................ Fair

Alkalis............................................................................ Poor

Aromatic Hydrocarbons ................................................ Good

Greases and Oils .......................................................... Good

Halogens....................................................................... Good

Ketones......................................................................... Poor

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Cellulose Acetate Butyrate (CAB)

Common Brand Names : Cellidor B, Tenite Butyrate

Density.......................................................................... 1.20 gcm^-3

Flammability.................................................................. Combustible

Limiting Oxygen Index................................................... 17 %

Refractive Index ............................................................ 1.478

Resistance to Ultra-violet .............................................. Good

Water Absorption - over 24 hours.................................. 0.9-2.2 %

Dielectric Constant at 1MHz.......................................... 2.5-6.2

Dielectric Strength......................................................... 10 kVmm^-1

Dissipation factor .......................................................... 0.04 @ 1kHz

Volume Resistivity......................................................... 10¹¹ -10¹⁵ Wcm

Heat-Deflection Temperature - 0.45MPa ...................... 73°C

Heat-Deflection Temperature - 1.8MPa ........................ 62°C

Lower Working Temperature......................................... <-40°C

Thermal Conductivity at 23°C........................................ 0.16-0.32 Wm^-1 K^-1

Thermal Expansivity...................................................... 140 x10^-6 K^-1

Upper Working Temperature......................................... 60-100°C

Elongation at break ....................................................... 60 %

Hardness - Rockwell ..................................................... 99

Izod Impact Strength..................................................... 260 Jm^-1

Tensile Modulus............................................................ 0.3-2.0 GPa

Tensile Strength............................................................ 20-60 MPa

Alcohols ........................................................................ Poor

Aromatic Hydrocarbons ................................................ Poor

Ketones......................................................................... Poor

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Common Brand Names : Halar

Density.......................................................................... 1.68 gcm^-3

Flammability.................................................................. V0

Limiting Oxygen Index................................................... 60 %

Radiation resistance - Alpha ......................................... Degraded by 10000 rads

Resistance to Ultra-violet .............................................. Good

Water Absorption - over 24 hours.................................. <0.02 %

Dielectric Constant at 1MHz.......................................... 2.3-2.5

Dielectric Strength......................................................... 40 kVmm^-1

Dissipation factor .......................................................... 0.002 @ 1kHz

Surface Resistivity ........................................................ 10¹⁴ -10¹⁵ W/sq

Volume Resistivity......................................................... 10¹⁵ -10¹⁶ Wcm

Heat-Deflection Temperature - 0.45MPa ...................... 115°C

Heat-Deflection Temperature - 1.8MPa ........................ 75°C

Lower Working Temperature......................................... -75°C

Thermal Conductivity at 23°C........................................ 0.16 Wm^-1 K^-1

Thermal Expansivity...................................................... 80 x10^-6 K^-1

Upper Working Temperature......................................... 130-170°C

Abrasive Resistance - ASTM D1044............................. 5 mg/1000 cycles

Coefficient of friction...................................................... 0.07-0.08

Elongation at break ....................................................... 200 %

Hardness - Rockwell ..................................................... R95

Izod Impact Strength..................................................... <1000 Jm^-1

Tensile Modulus............................................................ 1.4-1.6 GPa

Tensile Strength............................................................ 48 MPa

Acids - concentrated ..................................................... Good

Acids - dilute.................................................................. Good

Alcohols ........................................................................ Good

Alkalis............................................................................ Good

Aromatic Hydrocarbons ................................................ Good

Greases and Oils .......................................................... Good

Halogens....................................................................... Fair

Ketones......................................................................... Good

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Polyamide - Nylon 11 (PA 11)

Common Brand Names : Rilsan B

Density.......................................................................... 1.04 gcm^-3

Flammability.................................................................. V2

Limiting Oxygen Index................................................... 22 %

Radiation resistance - Alpha ......................................... Fair

Resistance to Ultra-violet .............................................. Fair

Water Absorption - over 24 hours.................................. 0.8 %

Water absorption - Equilibrium ...................................... 2.5 %

Dielectric Constant at 1MHz.......................................... 3.0

Dielectric Strength......................................................... 20 kVmm^-1

Dissipation factor .......................................................... 0.05 @ 1kHz

Surface Resistivity ........................................................ 10¹⁴ W/sq

Volume Resistivity......................................................... 10¹⁴ Wcm

Heat-Deflection Temperature - 0.45MPa ...................... 150°C

Heat-Deflection Temperature - 1.8MPa ........................ 55°C

Lower Working Temperature......................................... -50°C

Thermal Conductivity at 23°C........................................ 0.3 Wm^-1 K^-1

Thermal Expansivity...................................................... 125 x10^-6 K^-1

Upper Working Temperature......................................... 70-130°C

Coefficient of friction...................................................... 0.2-0.3

Elongation at break ....................................................... 320 %

Hardness - Rockwell ..................................................... M60

Izod Impact Strength..................................................... 96 Jm^-1

Tensile Modulus............................................................ 1.5 GPa

Tensile Strength............................................................ 44 MPa

Acids - concentrated ..................................................... Poor

Acids - dilute.................................................................. Fair-Poor

Alcohols ........................................................................ Fair

Alkalis............................................................................ Good

Aromatic Hydrocarbons ................................................ Good

Greases and Oils .......................................................... Good

Halogens....................................................................... Poor

Ketones......................................................................... Good

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Polyamide - Nylon 12 (PA 12)

Common Brand Names : Rilsan A, Vestamid

Density.......................................................................... 1.02 gcm^-3

Flammability.................................................................. HB-V2

Limiting Oxygen Index................................................... 21 %

Water absorption - Equilibrium ...................................... 1.6 %

Dielectric Constant at 1MHz.......................................... 3.5 @ 100kHz

Dielectric Strength......................................................... 26-30 kVmm^-1 at 1mm

Dissipation factor .......................................................... 0.06 @ 100kHz

Surface Resistivity ........................................................ 10¹³ W/sq

Volume Resistivity......................................................... 10¹² -10¹⁴ Wcm

Heat-Deflection Temperature - 0.45MPa ...................... 130-135°C

Heat-Deflection Temperature - 1.8MPa ........................ 48-55°C

Thermal Expansivity...................................................... 100-120 x10^-6 K^-1

Elongation at break ....................................................... 290-300 %

Hardness - Rockwell ..................................................... R84-107

Tensile Strength............................................................ 50-55 MPa

Acids - concentrated ..................................................... Poor

Acids - dilute.................................................................. Fair-Poor

Alcohols ........................................................................ Fair

Alkalis............................................................................ Good

Aromatic Hydrocarbons ................................................ Good

Greases and Oils .......................................................... Good

Halogens....................................................................... Poor

Ketones......................................................................... Good

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Polyamide - Nylon 4,6 (PA 4,6)

Common Brand Names : Stanyl

Density.......................................................................... 1.18 gcm^-3

Flammability.................................................................. V2 @ 0.8mm

Limiting Oxygen Index................................................... 24 %

Water Absorption - over 24 hours.................................. 1.3 %

Water absorption - Equilibrium ...................................... 3.7 %

Dielectric Constant at 1MHz.......................................... 3.8-4.3

Dielectric Strength......................................................... 20 kVmm^-1

Dissipation factor .......................................................... 0.35 @ 1kHz

Surface Resistivity ........................................................ 10¹² -10¹⁴ W/sq

Volume Resistivity......................................................... 10¹³ -10¹⁵ Wcm

Heat-Deflection Temperature - 0.45MPa ...................... 220°C

Heat-Deflection Temperature - 1.8MPa ........................ 160°C

Lower Working Temperature......................................... -40°C

Thermal Conductivity at 23°C........................................ 0.30 Wm^-1 K^-1

Thermal Expansivity...................................................... 80-90 x10^-6 K^-1

Upper Working Temperature......................................... 100-200°C

Hardness - Rockwell ..................................................... M92

Izod Impact Strength..................................................... 80 Jm^-1

Tensile Modulus............................................................ 3.1-3.3 GPa

Tensile Strength............................................................ 55-100 Mpa

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Polyamide - Nylon 6 (PA 6)

Common Brand Names : Akulon K and F, Capron, Maranyl B, Nylacast, Orgamid, Ultramid B

Density.......................................................................... 1.13 gcm^-3

Flammability.................................................................. Self Extinguishing

Limiting Oxygen Index................................................... 25 %

Radiation resistance - Alpha ......................................... Fair

Refractive Index ............................................................ 1.53

Resistance to Ultra-violet .............................................. Fair

Water Absorption - over 24 hours.................................. 2.7 %

Water absorption - Equilibrium ...................................... >8 %

Dielectric Constant at 1MHz.......................................... 3.6

Dielectric Strength......................................................... 25 kVmm^-1

Dissipation factor .......................................................... 0.2 @ 1kHz

Surface Resistivity ........................................................ 5x10¹⁰ W/sq

Volume Resistivity......................................................... 5x10¹² Wcm

Heat-Deflection Temperature - 0.45MPa ...................... 200°C

Heat-Deflection Temperature - 1.8MPa ........................ 80°C

Lower Working Temperature......................................... -40°C

Thermal Conductivity at 23°C........................................ 0.24-0.28 Wm^-1 K^-1

Thermal Expansivity...................................................... 95 x10^-6 K^-1

Upper Working Temperature......................................... 80-160°C

Abrasive Resistance - ASTM D1044............................. 5 mg/1000 cycles

Coefficient of friction...................................................... 0.2-0.3

Hardness - Rockwell ..................................................... M82

Izod Impact Strength..................................................... 30-250 Jm^-1

Tensile Modulus............................................................ 2.6-3.0 GPa

Tensile Strength............................................................ 78 MPa

Acids - concentrated ..................................................... Poor

Acids - dilute.................................................................. Poor

Alcohols ........................................................................ Good

Alkalis............................................................................ Good

Aromatic Hydrocarbons ................................................ Good

Greases and Oils .......................................................... Good

Halogens....................................................................... Poor

Ketones......................................................................... Good

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Polyamide - Nylon 6,6 (PA 6,6)

Common Brand Names : Akulon S, Maranyl A, Utramid A, Zytel

Density.......................................................................... 1.14 gcm^-3

Flammability.................................................................. Self Extinguishing

Limiting Oxygen Index................................................... 23 %

Radiation resistance - Alpha ......................................... Fair

Refractive Index ............................................................ 1.53

Resistance to Ultra-violet .............................................. Fair

Water Absorption - over 24 hours.................................. 2.3 %

Water absorption - Equilibrium ...................................... 8 %

Dielectric Constant at 1MHz.......................................... 3.4

Dielectric Strength......................................................... 25 kVmm^-1

Dissipation factor .......................................................... 0.2 @ 1kHz

Surface Resistivity ........................................................ 10¹¹ W/sq

Volume Resistivity......................................................... 10¹³ Wcm

Heat-Deflection Temperature - 0.45MPa ...................... 200°C

Heat-Deflection Temperature - 1.8MPa ........................ 100°C

Lower Working Temperature......................................... -30°C

Thermal Conductivity at 23°C........................................ 0.25 Wm^-1 K^-1

Thermal Expansivity...................................................... 90 x10^-6 K^-1

Upper Working Temperature......................................... 80-180°C

Abrasive Resistance - ASTM D1044............................. 3-5 mg/1000 cycles

Coefficient of friction...................................................... 0.2-0.3

Hardness - Rockwell ..................................................... M89

Izod Impact Strength..................................................... 40-110 Jm^-1

Tensile Modulus............................................................ 3.3 GPa

Tensile Strength............................................................ 82 MPa

Acids - concentrated ..................................................... Poor

Acids - dilute.................................................................. Poor

Alcohols ........................................................................ Good

Alkalis............................................................................ Good

Aromatic Hydrocarbons ................................................ Good

Greases and Oils .......................................................... Good

Halogens....................................................................... Poor

Ketones......................................................................... Good

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Reinforced (PA 6,6 30% GFR)

Common Brand Names : Akulon S, Maranyl A, Utramid A, Zytel

Density.......................................................................... 1.4 gcm^-3

Limiting Oxygen Index................................................... 22 %

Water Absorption - over 24 hours.................................. 1-5 %

Dielectric Constant at 1MHz.......................................... 3.9-5.7

Volume Resistivity......................................................... 10¹² -10¹⁵ Wcm

Heat-Deflection Temperature - 0.45MPa ...................... 257°C

Heat-Deflection Temperature - 1.8MPa ........................ 252°C

Thermal Conductivity at 23°C........................................ 0.23 Wm^-1 K^-1

Thermal Expansivity...................................................... 20-30 x10^-6 K^-1

Upper Working Temperature......................................... 80-200°C

Elongation at break ....................................................... 5 %

Hardness - Rockwell ..................................................... M100

Izod Impact Strength..................................................... 120 Jm^-1

Tensile Modulus............................................................ 10-11 GPa

Tensile Strength............................................................ 160-210 MPa

Acids - concentrated ..................................................... poor

Acids - dilute.................................................................. poor

Alkalis............................................................................ very good

Aromatic Hydrocarbons ................................................ very good

Ketones......................................................................... very good

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Polyamide/imide (PAI)

Common Brand Names : Kerimid, Torlon

Density.......................................................................... 1.42-1.46 gcm^-3

Flammability.................................................................. V0

Limiting Oxygen Index................................................... 44-45 %

Radiation resistance - Alpha ......................................... Good

Radiation resistance - Beta ........................................... Good

Resistance to Ultra-violet .............................................. Good

Water Absorption - over 24 hours.................................. 0.3 %

Water absorption - Equilibrium ...................................... 3-4 %

Dielectric Constant at 1MHz.......................................... 3.9-5.4

Dielectric Strength......................................................... 23 kVmm^-1@ 1mm

Dissipation factor .......................................................... 0.03-0.042

Surface Resistivity ........................................................ 8-50x10¹⁷ W/sq

Volume Resistivity......................................................... 0.08-2x10¹⁷ Wcm

Heat-Deflection Temperature - 1.8MPa ........................ 278-9°C

Lower Working Temperature......................................... < °C -200

Specific Heat................................................................. 1.0 kJkg^-1 K^-1

Thermal Conductivity at 23°C........................................ 0.26-0.54 Wm^-1 K^-1

Thermal Expansivity...................................................... 25-31 x10^-6 K^-1

Upper Working Temperature......................................... 200-260°C

Compressive Strength .................................................. 170-220 MPa

Elongation at break ....................................................... 7-15 %

Hardness - Rockwell ..................................................... E72-86

Izod Impact Strength..................................................... 60-140 Jm^-1 - notched

Poisson’s Ratio ............................................................. 0.38

Tensile Modulus............................................................ 4.5-6.8 GPa

Tensile Strength............................................................ 110-190 MPa

Acids - concentrated ..................................................... Good

Acids - dilute.................................................................. Good

Alcohols ........................................................................ Good

Alkalis............................................................................ Poor

Aromatic Hydrocarbons ................................................ Good

Greases and Oils .......................................................... Good

Ketones......................................................................... Good

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Polybenzimidazole (PBI)

Common Brand Names : Celazole

Density.......................................................................... 1.3 gcm^-3

Flammability.................................................................. Does not burn

Limiting Oxygen Index................................................... 58 %

Radiation resistance - Alpha ......................................... Good

Water Absorption - over 24 hours.................................. 0.4 %

Dielectric Constant at 1MHz.......................................... 3.2

Dielectric Strength......................................................... 21 kVmm^-1

Volume Resistivity......................................................... 8x10¹⁴ Wcm

Heat-Deflection Temperature - 0.45MPa ...................... 435°C

Thermal Conductivity at 23°C........................................ 0.41 Wm^-1 K^-1

Thermal Expansivity...................................................... 23 x10^-6 K^-1

Upper Working Temperature......................................... 260-400°C

Coefficient of friction...................................................... 0.19-0.27

Compressive Modulus .................................................. 6.2 GPa

Compressive Strength .................................................. 400 MPa

Elongation at break ....................................................... 3 %

Hardness - Rockwell ..................................................... K115

Izod Impact Strength..................................................... 590 Jm^-1 unnotched

Tensile Modulus............................................................ 5.9 GPa

Tensile Strength............................................................ 160 MPa

Acids - concentrated ..................................................... Fair

Acids - dilute.................................................................. Good

Alcohols ........................................................................ Very Good

Alkalis............................................................................ Good/Fair

Aromatic Hydrocarbons ................................................ Very Good

Greases and Oils .......................................................... Very Good

Ketones......................................................................... Very Good

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Polybutylene terephthalate (PBT)

Common Brand Names : Celanex, Orgater, Valox

Density.......................................................................... 1.31 gcm^-3

Limiting Oxygen Index................................................... 25 %

Water Absorption - over 24 hours.................................. 0.1 %

Dielectric Constant at 1MHz.......................................... 3.2 @ 1kHz

Dielectric Strength......................................................... 20 kVmm^-1

Dissipation factor .......................................................... 0.002 @ 1kHz

Volume Resistivity......................................................... 10¹⁵ Wcm

Heat-Deflection Temperature - 0.45MPa ...................... 150°C

Heat-Deflection Temperature - 1.8MPa ........................ 60°C

Upper Working Temperature......................................... 120-?°C

Elongation at break ....................................................... 250 %

Hardness - Rockwell ..................................................... M70

Izod Impact Strength..................................................... 60 Jm^-1

Tensile Modulus............................................................ 2 GPa

Tensile Strength............................................................ 50 MPa

Acids - dilute.................................................................. Good

Alcohols ........................................................................ Good

Alkalis............................................................................ Poor-Good

Aromatic Hydrocarbons ................................................ Good

Greases and Oils .......................................................... Good

Ketones......................................................................... Good

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Reinforced (PBT 30% GFR)

Common Brand Names : Celanex, Orgater, Valox

Density.......................................................................... 1.63 gcm^-3

Flammability.................................................................. Self Extinguishing

Limiting Oxygen Index................................................... 23 %

Water Absorption - over 24 hours.................................. 0.15-0.35 %

Dielectric Constant at 1MHz.......................................... 4

Dielectric Strength......................................................... 20 kVmm^-1

Dissipation factor .......................................................... 0.002 @ 1kHz

Volume Resistivity......................................................... 2x10¹⁴ Wcm

Heat-Deflection Temperature - 0.45MPa ...................... 220°C

Heat-Deflection Temperature - 1.8MPa ........................ 200°C

Thermal Conductivity at 23°C........................................ 0.24 Wm^-1 K^-1

Thermal Expansivity...................................................... 20-70 x10^-6 K^-1

Upper Working Temperature......................................... 120-200°C

Elongation at break ....................................................... 2 %

Hardness - Rockwell ..................................................... M93

Izod Impact Strength..................................................... 70 Jm^-1

Tensile Modulus............................................................ 12 GPa

Tensile Strength............................................................ 185 MPa

Acids - concentrated ..................................................... Good

Acids - dilute.................................................................. Good

Alcohols ........................................................................ Very Good

Alkalis............................................................................ Poor

Aromatic Hydrocarbons ................................................ Good

Greases and Oils .......................................................... Good

Halogens....................................................................... Good

Ketones......................................................................... Very Good

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Polycarbonate (PC)

Common Brand Names : Lexan, Makrofol, Makrolon

Density.......................................................................... 1.2 gcm^-3

Flammability.................................................................. V0-V2

Limiting Oxygen Index................................................... 25-27 %

Refractive Index ............................................................ 1.585

Resistance to Ultra-violet .............................................. Fair

Water Absorption - over 24 hours.................................. 0.1 %

Water absorption - Equilibrium ...................................... 0.35 %

Dielectric Constant at 1MHz.......................................... 2.9

Dielectric Strength......................................................... 15-67 kVmm^-1

Dissipation factor .......................................................... 0.01

Surface Resistivity ........................................................ 10¹⁵ W/sq

Volume Resistivity......................................................... 10¹⁴ -10¹⁶ Wcm

Heat-Deflection Temperature - 0.45MPa ...................... 140°C

Heat-Deflection Temperature - 1.8MPa ........................ 128-138°C

Lower Working Temperature......................................... -135°C

Specific Heat................................................................. ca.1.2 kJkg^-1 K^-1

Thermal Conductivity at 23°C........................................ 0.19-0.22 Wm^-1 K^-1

Thermal Expansivity...................................................... 66-70 x10^-6 K^-1

Upper Working Temperature......................................... 115-130°C

Abrasive Resistance - ASTM D1044............................. 10-15 mg/1000 cycles

Coefficient of friction...................................................... 0.31

Compressive Strength .................................................. >80 MPa

Elongation at break ....................................................... 100-150 %

Hardness - Rockwell ..................................................... M70

Izod Impact Strength..................................................... 600-850 Jm^-1

Tensile Modulus............................................................ 2.3-2.4 GPa

Tensile Strength............................................................ 55-75 MPa

Acids - concentrated ..................................................... Fair

Acids - dilute.................................................................. Good

Alcohols ........................................................................ Good

Alkalis............................................................................ Poor

Aromatic Hydrocarbons ................................................ Poor

Greases and Oils .......................................................... Good

Halogens....................................................................... Poor

Ketones......................................................................... Poor

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Polycarbonate - Conductive (PC)

Physical Properties

Density.......................................................................... 1.28-1.35 gcm^-3

Water absorption - Equilibrium ...................................... 0.9 %

Surface Resistivity ........................................................ 100-500 W/sq

Volume Resistivity......................................................... 1-100 Wcm

Elongation at break ....................................................... 5-9 %

Tensile Modulus............................................................ 3.8 GPa

Tensile Strength............................................................ 60-70 Mpa

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Common Brand Names : Makrofol, Pokalon C

Density.......................................................................... 1.34 gcm^-3

Flammability.................................................................. V1/V0

Limiting Oxygen Index................................................... 25-36 %

Water Absorption - over 24 hours.................................. 0.1 %

Water absorption - Equilibrium ...................................... 0.29 %

Dielectric Constant at 1MHz.......................................... 3.2

Dielectric Strength......................................................... 35 kVmm^-1

Dissipation factor .......................................................... 0.007

Volume Resistivity......................................................... >10¹⁵ Wcm

Heat-Deflection Temperature - 0.45MPa ...................... 147°C

Heat-Deflection Temperature - 1.8MPa ........................ 142°C

Specific Heat................................................................. 1.13 kJkg^-1 K^-1

Thermal Expansivity...................................................... 30-40 x10^-6 K^-1

Upper Working Temperature......................................... 115-165°C

Elongation at break ....................................................... 3 %

Hardness - Rockwell ..................................................... M91

Izod Impact Strength..................................................... 100 Jm^-1

Tensile Modulus............................................................ 6 GPa

Tensile Strength............................................................ 90 MPa

Acids - dilute.................................................................. Good

Alkalis............................................................................ Poor

Aromatic Hydrocarbons ................................................ Poor

Ketones......................................................................... Poor

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Polyetheretherketone (PEEK)

Common Brand Names : Victrex, Zyex

Density.......................................................................... 1.26-1.32 gcm^-3

Flammability.................................................................. V-0 @ 1.5mm

Limiting Oxygen Index................................................... 35 %

Radiation resistance - Alpha ......................................... Good

Resistance to Ultra-violet .............................................. Fair

Water Absorption - over 24 hours.................................. 0.1-0.3 %

Water absorption - Equilibrium ...................................... 0.5 %

Dielectric Constant at 1MHz.......................................... 3.2-3.3 @ 50Hz-10Khz,10Ghz

Dielectric Strength......................................................... 19 kVmm^-1 @ 50mm

Dissipation factor .......................................................... 0.003 @ 1MHz

Volume Resistivity......................................................... 10¹⁵ -10¹⁶ Wcm

Heat-Deflection Temperature - 0.45MPa ...................... >260°C

Heat-Deflection Temperature - 1.8MPa ........................ 160°C

Specific Heat................................................................. 0.32 kJkg^-1 K^-1

Thermal Conductivity at 23°C........................................ 0.25 Wm^-1 K^-1

Thermal Expansivity...................................................... 47/108 x10^-6 K^-1

Upper Working Temperature......................................... 250°C

Coefficient of friction...................................................... 0.18

Elongation at break ....................................................... 50 %

Hardness - Rockwell ..................................................... M99

Izod Impact Strength..................................................... 85 Jm^-1

Poisson’s Ratio ............................................................. 0.4

Tensile Modulus............................................................ 3.7-4.0 GPa

Tensile Strength............................................................ 70-100 MPa

Acids - concentrated ..................................................... Fair

Acids - dilute.................................................................. Good

Alcohols ........................................................................ Good

Alkalis............................................................................ Good

Aromatic Hydrocarbons ................................................ Good

Greases and Oils .......................................................... Good

Halogens....................................................................... Good

Ketones......................................................................... Good

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Polyetherimide (PEI)

Common Brand Names : Ultem

Density.......................................................................... 1.27 gcm^-3

Flammability.................................................................. V-0 @ 0.4mm, 5V @ 1.9mm

Limiting Oxygen Index................................................... 47 %

Resistance to Ultra-violet .............................................. Good

Water Absorption - over 24 hours.................................. 0.25 %

Water absorption - Equilibrium ...................................... 1.3 %

Dielectric Constant at 1MHz.......................................... 3.1 @ 1KHz

Dielectric Strength......................................................... 28-33 kVmm^-1 @ 1.6mm

Dissipation factor .......................................................... 0.0013 @ 1KHz

Surface Resistivity ........................................................ 4.10¹³ W/sq

Volume Resistivity......................................................... 7.10¹⁵ Wcm

Heat-Deflection Temperature - 0.45MPa ...................... 200°C

Heat-Deflection Temperature - 1.8MPa ........................ 190°C

Specific Heat................................................................. 2.0 kJkg^-1 K^-1

Thermal Conductivity at 23°C........................................ 0.22 Wm^-1 K^-1

Thermal Expansivity...................................................... 56 x10^-6 K^-1

Upper Working Temperature......................................... 170-200°C

Abrasive Resistance - ASTM D1044............................. 10 mg/1000 cycles

Compressive Modulus .................................................. 2.9 GPa

Compressive Strength .................................................. 140 MPa

Elongation at break ....................................................... 60 %

Hardness - Rockwell ..................................................... R125

Izod Impact Strength..................................................... 50 Jm^-1

Tensile Modulus............................................................ 2.9 GPa

Tensile Strength............................................................ 85 MPa

Acids - dilute.................................................................. Good

Alkalis............................................................................ Good/Fair

Aromatic Hydrocarbons ................................................ Good

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Polyethylene naphthalate (PEN)

Common Brand Names : Kaladex

Density.......................................................................... 1.36 gcm^-3

Flammability.................................................................. VTM-2 - UL94, 0.075mm

Optical Transmission..................................................... 84 % @ 0.075mm

Dielectric Constant at 1MHz.......................................... 3.2 at 10KHz

Dielectric Strength......................................................... 160 kVmm^-1 @ 0.075mm

Dissipation factor .......................................................... 0.0048 @ 10KHz

Surface Resistivity ........................................................ 10¹⁴ W/sq

Volume Resistivity......................................................... 10¹⁵ Wcm

Thermal Expansivity...................................................... 20-21 x10^-6 K^-1 - biax film

Upper Working Temperature......................................... 155°C

Coefficient of friction...................................................... 0.27 - biax film

Elongation at break ....................................................... 60 % - biax film

Tensile Modulus............................................................ 5-5.5 GPa - biax film

Tensile Strength............................................................ 200 MPa - biax film

Acids - concentrated ..................................................... Poor - Good

Acids - dilute.................................................................. Good

Alcohols ........................................................................ Good

Alkalis............................................................................ Poor - Good

Aromatic Hydrocarbons ................................................ Good

Greases and Oils .......................................................... Good

Ketones......................................................................... Good

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Polyethersulfone (PES)

Common Brand Names : Ultrason E, Victrex

Density.......................................................................... 1.37 gcm^-3

Flammability.................................................................. V-0 @ 0.4mm

Limiting Oxygen Index................................................... 34-41 %

Radiation resistance - Alpha ......................................... Good

Refractive Index ............................................................ 1.65

Resistance to Ultra-violet .............................................. Fair

Water Absorption - over 24 hours.................................. 0.4-1 %

Water absorption - Equilibrium ...................................... 2.2 %

Dielectric Constant at 1MHz.......................................... 3.7

Dielectric Strength......................................................... 16 kVmm^-1

Dissipation factor .......................................................... 0.003

Volume Resistivity......................................................... 10¹⁷ Wcm

Heat-Deflection Temperature - 0.45MPa ...................... >260°C

Heat-Deflection Temperature - 1.8MPa ........................ 203°C

Lower Working Temperature......................................... -110°C

Thermal Conductivity at 23°C........................................ 0.13-0.18 Wm^-1 K^-1

Thermal Expansivity...................................................... 55 x10^-6 K^-1

Upper Working Temperature......................................... 180-220 °C

Abrasive Resistance - ASTM D1044............................. 6 mg/1000 cycles

Elongation at break ....................................................... 40-80 %

Hardness - Rockwell ..................................................... M88

Izod Impact Strength..................................................... 85 Jm^-1

Tensile Modulus............................................................ 2.4-2.6 GPa

Tensile Strength............................................................ 70-95 MPa

Acids - concentrated ..................................................... Fair

Acids - dilute.................................................................. Good

Alcohols ........................................................................ Good

Alkalis............................................................................ Good

Aromatic Hydrocarbons ................................................ Fair

Greases and Oils .......................................................... Good

Halogens....................................................................... Good

Ketones......................................................................... Poor

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Polymethylmethacrylate (PMMA, Acrylic)

Common Brand Names : Diakon, Lucite, Oroglas, Perspex, Plexiglas

Density.......................................................................... 1.19 gcm^-3

Flammability.................................................................. Combustible

Limiting Oxygen Index................................................... 17-20 %

Refractive Index ............................................................ 1.49

Resistance to Ultra-violet .............................................. Good

Water Absorption - over 24 hours.................................. 0.2 %

Dielectric Constant at 1MHz.......................................... 2.6

Dielectric Strength......................................................... 15 kVmm^-1

Dissipation factor .......................................................... 0.014

Surface Resistivity ........................................................ 10¹⁴ W/sq

Volume Resistivity......................................................... 2-14x10¹⁵ Wcm

Heat-Deflection Temperature - 0.45MPa ...................... 105 °C

Heat-Deflection Temperature - 1.8MPa ........................ 95 °C

Lower Working Temperature......................................... -40 °C

Specific Heat................................................................. 1.4-1.5 kJkg^-1 K^-1

Thermal Conductivity at 23°C........................................ 0.17-0.19 Wm^-1 K^-1

Thermal Expansivity...................................................... 70-77 x10^-6 K^-1

Upper Working Temperature......................................... 50 °C to 90

Elongation at break ....................................................... 2.5-4 %

Hardness - Rockwell ..................................................... M92-100

Izod Impact Strength..................................................... 16-32 Jm^-1

Tensile Modulus............................................................ 2.4-3.3 GPa

Tensile Strength............................................................ 80 MPa

Acids - concentrated ..................................................... Fair

Acids - dilute.................................................................. Good

Alcohols ........................................................................ Fair

Alkalis............................................................................ Good

Aromatic Hydrocarbons ................................................ Poor

Greases and Oils .......................................................... Poor

Halogens....................................................................... Poor

Ketones......................................................................... Poor

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Polyaramid - Kevlar â

Common Brand Names : Kevlar, Twaron

Density.......................................................................... 1.44 gcm^-3

Resistance to Ultra-violet .............................................. Fair

Lower Working Temperature......................................... -200 °C

Specific Heat................................................................. 1.4 kJkg^-1 K^-1

Thermal Conductivity at 23°C........................................ 0.04 Wm^-1 K^-1

Thermal Expansivity...................................................... -2 x10^-6 K^-1 along axis

Upper Working Temperature......................................... 180-245 °C

Tensile Modulus............................................................ 59-124 GPa

Tensile Strength............................................................ 2760 MPa

Acids - concentrated ..................................................... Poor

Acids - dilute.................................................................. Fair

Alcohols ........................................................................ Good

Alkalis............................................................................ Good

Aromatic Hydrocarbons ................................................ Good

Greases and Oils .......................................................... Good

Halogens....................................................................... Good

Ketones......................................................................... Good

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Polyaramid - Nomex â

Common Brand Names : Nomex

Density.......................................................................... 1.38 gcm^-3

Limiting Oxygen Index................................................... 29 %

Radiation resistance - Alpha ......................................... Good

Water absorption - Equilibrium ...................................... 9 %

Specific Heat................................................................. 1.2 kJkg^-1 K^-1

Thermal Conductivity at 23°C........................................ 0.13 Wm^-1 K^-1

Thermal Expansivity...................................................... 20 x10^-6 K^-1

Upper Working Temperature......................................... 200-300 °C

Acids - concentrated ..................................................... Fair

Acids - dilute.................................................................. Good

Alcohols ........................................................................ Good

Alkalis............................................................................ Fair - Good

Aromatic Hydrocarbons ................................................ Good

Greases and Oils .......................................................... Good

Ketones......................................................................... Good

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Last modified: July 26, 2000

Copyright © 2000 EDL Inc. D. Polsky