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Properties
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- Mechanical Properties
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- Note
- Note: 1 g/cm³ = 1,000 kg/m³ ; 1 MPa = 1 N/mm² ; 1 kV/mm = 1 MV/m
- This table, mainly to be used for comparison purposes, is a valuable help in the choice of material. The data listed here fall within the normal range of product properties of dry material. However, they are not guaranteed and should not be used to establish material specification limits or alone as the basis of design. See the remaining notes on the next page.
- 1 The figures given for these properties are for the most part derived from raw material supplier data and other publications.
- 2 Values for this property are only given here for amorphous materials and for materials that do not show a melting temperature (PBI & PI).
- 3 Temperature resistance over a period of min. 20,000 hours. After this period of time, there is a decrease in tensile strength – measured at 23 °C – of about 50 % as compared with the original value. The temperature value given here is thus based on the thermal-oxidative degradation which takes place and causes a reduction in properties. Note, however, that the maximum allowable service temperature depends in many cases essentially on the duration and the magnitude of the mechanical stresses to which the material is subjected.
- 4 Impact strength decreases with decreasing temperature, the minimum allowable service temperature is practically mainly determined by the extent to which the material is subjected to impact. The value given here is based on unfavorable impact conditions and may consequently not be considered as being the absolute practical limit.
- 5 These estimated ratings, derived from raw material supplier data and other publications, are not intended to reflect hazards presented by the material under actual fire conditions. There is no ‘UL File Number’ available for these stock shapes.
- 6 Most of the figures given for the mechanical properties are average values of tests run on dry test specimens machined out of rods 40-60 mm when available, else out of plate 10-20mm. All tests are done at room temperature (23° / 73°F)
- 7 Test speed: either 5 mm/min or 50 mm/min [chosen acc. to ISO 10350-1 as a function of the ductile behavior of the material (tough or brittle)] using type 1B tensile bars
- 8 Test speed: either 0.2"/min or 2"/min or [chosen as a function of the ductile behavior of the material (brittle or tough)] using Type 1 tensile bars
- 9 Test speed: 1 mm/min, using type 1B tensile bars
- 10 Test specimens: cylinders Ø 8 mm x 16 mm, test speed 1 mm/min
- 11 Test specimens: cylinders Ø 0.5" x 1", or square 0.5" x 1", test speed 0.05"/min
- 12 Test specimens: bars 4 mm (thickness) x 10 mm x 80 mm ; test speed: 2 mm/min ; span: 64 mm
- 13 Test specimens: bars 0.25" (thickness) x 0.5" x 5" ; test speed: 0.11"/min ; span: 4"
- 14 Measured on 10 mm, 0.4" thick test specimens
- 15 Electrode configuration Φ 25 / Φ 75 mm coaxial cylinders in transformer oil according to IEC 60296 ; 1 mm thick test specimens
- 16 Measured on disks Ø 50 mm x 3 mm
- 17 Measured on 1/8" thick x 2" diameter or square
- 18 Test procedure similar to Test Method A: “Pin-on-disk” as described in ISO 7148-2, Load 3MPa, sliding velocity= 0,33 m/s, mating plate steel Ra= 0.7-0.9 μm, tested at 23°C, 50%RH
- 19 Test using journal bearing system, 200 hrs, 118 ft/min, 42 PSI, steel shaft roughness 16±2 RMS micro inches with Hardness Brinell of 180-200
- 20 Test using Plastic Thrust Washer rotating against steel, 20 ft/min and 250 PSI, Stationary steel washer roughness 16±2 RMS micro inches with Rockwell C 20-24
- 21 Test using Plastic Thrust Washer rotating against steel, Step by step increase pressure, the test ends when plastic begins to deform or if temperature increases to 300°F
| Value | Units | Test Method / Conditions | |
| Tensile Strength ⁷ ⁶ | 90 | MPa | ISO 527-1/-2 |
| Tensile Strain (Elongation, at Yield) ⁷ ⁶ | 4 | % | ISO 527-1/-2 |
| Tensile Strain (Elongation, at Break) ⁷ ⁶ | 15 | % | ISO 527-1/-2 |
| Tensile Modulus of Elasticity ⁹ ⁶ | 3500 | MPa | ISO 527-1/-2 |
| Shear Strength ⁶ | 8000 | PSI | ASTM D732 |
| Shear Strength ⁶ | 55 | — | — |
| Compressive Stress (at 1% Nominal Strain) ¹⁰ ⁶ | 33 | MPa | ISO 604 |
| Compressive Stress (at 2% Nominal Strain) ¹⁰ ⁶ | 64 | MPa | ISO 604 |
| Compressive Stress (at 5% Nominal Strain) ¹⁰ ⁶ | 107 | MPa | ISO 604 |
| Unnotched Charpy Impact Strength ⁶ | 50 | kJ/m² | ISO 179-1/1eU |
| Notched Charpy Impact Strength ⁶ | 2 | kJ/m² | ISO 179-1/1eA |
| Flexural Strength ¹² ⁶ | 135 | MPa | ISO 178 |
| Hardness, Rockwell Scale M ¹⁴ ⁶ | 101 | — | ASTM D785 |
| Hardness, Rockwell Scale M ¹⁴ ⁶ | 96 | ISO 2039-2 | ISO 2039-2 |
| Hardness, Shore D ¹⁴ ⁶ | 84 | — | ASTM D2240 |
| Hardness, Shore D ¹⁴ ⁶ | 80 | ISO 868 | ISO 2039-2 |
| Tensile Strength ⁶ ⁸ | 12400 | PSI | ASTM D638 |
| Tensile Strain (Elongation, at Yield) ⁶ ⁸ | 4 | % | ASTM D638 |
| Tensile Strain (Elongation, at Break) ⁶ ⁸ | 20 | % | ASTM D638 |
| Tensile Modulus of Elasticity ⁶ ⁸ | 460 | PSI | ASTM D638 |
| Compressive Strength ⁶ ¹¹ | 15000 | PSI | ASTM D695 |
| Notched Izod Impact Strength ⁶ | 0.5 | ft.lb./in | ASTM D256 |
| Flexural Strength ¹³ ⁶ | 18000 | PSI | ASTM D790 |
| Flexural Modulus of Elasticity ⁶ | 490 | PSI | ASTM D790 |
| Value | Units | Test Method / Conditions | |
| Melting Temperature (at 10°C/min) ¹ | 245 | °C | ISO 11357-1/-3 (Differential Scanning Calorimetry) |
| Thermal Conductivity (at 23°C) ¹ | 0.29 | W/(K.m) | — |
| Coefficient of Linear Thermal Expansion (at 23°C - 60°C) ¹ | 60 | μm/(m.K) | — |
| Coefficient of Linear Thermal Expansion (at 23°C - 100°C) ¹ | 80 | μm/(m.K) | — |
| Heat Deflection Temperature (Method A, 1.8 MPa) ¹ | 80 | °C | ISO 75-1/-2 |
| Continuous Allowable Service Temperature in Air (20 hrs) ³ ¹ | 100 | °C | — |
| Continuous Allowable Service Temperature in Air (20 hrs) ³ ¹ | 210 | °F | — |
| Service Temperature ⁴ ¹ | min. -20 | °C | — |
| Flammability (at 3 mm) ⁵ ¹ | HB | — | UL 94 |
| Flammability (Oxygen Index) ¹ | 25 | % | ISO 4589-1/-2 |
| Melting Temperature (at 50°F/min) ¹ | 491 | °F | ASTM D3418 (Differential Scanning Calorimetry) |
| Thermal Conductivity (at 73°F) ¹ | 2 | BTU in./(hr.ft².°F) | — |
| Coefficient of Linear Thermal Expansion (at -40°F - 300°F) ¹ | 33 | μin./in./°F | ASTM E-831 (TMA) |
| Heat Deflection Temperature (Method A, 264 PSI) ¹ | 240 | °F | ASTM D648 |
| Flammability (at 1/8 in) ⁵ ¹ | HB | — | UL 94 |
| Value | Units | Test Method / Conditions | |
| Electric Strength ¹⁵ | 22 | kV/mm | IEC 60243-1 |
| Volume Resistivity | 1E+14 | Ohm.cm | IEC 62631-3-1 |
| Surface Resistivity | 1E+13 | Ohm/sq. | ANSI/ESD STM 11.11 |
| Dielectric Constant (at 1 MHz) | 3.4 | — | ASTM D150 |
| Dielectric Constant (at 1 MHz) | 3.2 | — | IEC 62631-2-1 |
| Dissipation Factor (at 1MHz) | 0.02 | — | ASTM D150 |
| Dissipation Factor (at 1MHz) | 0.014 | — | IEC 62631-2-1 |
| Electric Strength | 35 | Volts/mil | ASTM D149 |
| Value | Units | Test Method / Conditions | |
| Density | 1.39 | g/cm³ | ISO 1183-1 |
| Water Absorption (After 24h Immersion in Water of 23°C) ¹⁶ | 0.07 | % | ISO 62 |
| Water Absorption (at Saturation in Water of 23°C) | 0.5 | % | — |
| Wear Rate ¹⁸ | 3 | μm/km | ISO 7148-2 |
| Dynamic Coefficient of Friction ¹⁸ | 0.15 - 0.25 | — | ISO 7148-2 |
| Limiting PV (at 0.1 / 1 m/s Cylindrical Sleeve Bearings) | 0.15 | Mpa.m/s | — |
| Specific Gravity | 1.41 | — | ASTM D792 |
| Water Absorption (After 24h Immersion in Water of 73°F) ¹⁷ | 0.07 | % | ASTM D570 |
| Water Absorption (at Saturation in Water of 73°F) ¹⁷ | 0.9 | % | ASTM D570 |
| Wear Rate ¹⁹ | 60 | in³.min/ft.lbs.hrX10⁻¹⁰ | QTM 55010 |
| Dynamic Coefficient of Friction ²⁰ | 0.2 | — | QTM 55007 |
| Limiting PV (at 100 FPM) ²¹ | 2800 | ft.lbs/in².min | QTM 55007 |
Regulatory & Compliance
- Certifications & Compliance