- 密度 [g/cm3]: 0.24
- 吸水率 [%]: 2.0
- 弯曲强度 [MPa]: 0.276
- 脆化温度 [℃]: -40.0
Physical Properties | Metric | English | Comments |
---|---|---|---|
Density | 0.240 g/cc | 0.00867 lb/in³ | ±10%; ASTM D3574A |
Water Absorption | 2.0 % | 2.0 % | Typical per AMS 3568 |
Water Absorption at Saturation | 19 % | 19 % | Immersion; ASTM D570 |
Mechanical Properties | Metric | English | Comments |
Hardness, Shore A | 8.0 | 8.0 | ASTM D2240 |
Hardness, Shore O | 12 | 12 | ASTM D2240 |
Tensile Strength, Ultimate | >= 0.276 MPa | >= 40.0 psi | ASTM D3574E |
Elongation at Break | >= 100 % | >= 100 % | ASTM D3574E |
Compressive Yield Strength | 0.0270 - 0.0550 MPa | 3.92 - 7.98 psi | at 25% deflection; 0.2"/min strain rate |
Tear Strength | >= 0.500 kN/m | >= 2.85 pli | Die C; ASTM D624 |
Compression Set | <= 2.0 % | <= 2.0 % | 23°C; ASTM D1667 test D |
<= 5.0 % @Temperature 121 °C | <= 5.0 % @Temperature 250 °F | Test D after autoclaved 5 hrs.; ASTM D3574J | |
<= 10 % @Temperature 70.0 °C | <= 10 % @Temperature 158 °F | ASTM D3574 test D | |
Electrical Properties | Metric | English | Comments |
Electrical Resistivity | 1.00e+12 ohm-cm | 1.00e+12 ohm-cm | ASTM D257 |
Surface Resistance | 2.00e+12 ohm | 2.00e+12 ohm | ASTM D257 |
Dielectric Constant | 1.71 | 1.71 | K' ("DK"); ASTM D150; relative humidity 50% for 24 hrs. |
Dielectric Strength | 2.00 kV/mm | 50.8 kV/in | ASTM D149 |
Dissipation Factor | 0.050 | 0.050 | tan D ("DF"); ASTM D150 |
Thermal Properties | Metric | English | Comments |
CTE, linear | 230 - 310 µm/m-°C @Temperature 20.0 °C | 128 - 172 µin/in-°F @Temperature 68.0 °F | ASTM C518 |
Maximum Service Temperature, Air | 90.0 °C | 194 °F | Recommended continuous use |
121 °C | 250 °F | Intermittent | |
Brittleness Temperature | -40.0 °C | -40.0 °F | Low temp embrittlement; ASTM D746 |