150均聚缩醛®恩辛格聚甲醛（POM）
类别：聚合物；热塑性；聚甲醛（POM）；缩醛均聚物，无筋
材料说明：恩辛格的Delrin®150股票的形状是使用美国杜邦150树脂制造的聚缩醛。这是一种结晶塑料，它提供了一个良好的平衡性能，以弥补金属和塑料之间的差距。具有较高的拉伸强度和弯曲性能，同时具有抗蠕变和韧性，表现出较低的吸湿性和疲劳耐久性。
物性表：
图：物性表：
| Physical Properties | Metric | English | Comments |
|---|---|---|---|
| Specific Gravity | 1.42 g/cc | 1.42 g/cc | ASTM D792 |
| Water Absorption | 0.25 % @Time 86400 sec |
0.25 % @Time 24.0 hour |
ASTM D570 |
| Water Absorption at Saturation | 0.90 % | 0.90 % | ASTM D570 |
| Mechanical Properties | Metric | English | Comments |
| Hardness, Rockwell M | 94 | 94 | ASTM D785 |
| Hardness, Rockwell R | 120 | 120 | ASTM D785 |
| Tensile Strength, Yield | 75.8 MPa | 11000 psi | ASTM D638 |
| Elongation at Break | 25 % | 25 % | ASTM D638 |
| Tensile Modulus | 3.10 GPa | 450 ksi | ASTM D638 |
| Flexural Strength | 110 MPa | 16000 psi | ASTM D790 |
| Flexural Modulus | 2.90 GPa | 420 ksi | ASTM D790 |
| Compressive Strength | 35.9 MPa | 5200 psi | ASTM D695 |
| Izod Impact, Unnotched | 0.80 J/cm | 1.5 ft-lb/in | ASTM D256 |
| Coefficient of Friction, Dynamic | 0.20 | 0.20 | 40 psi, 50 fpm; ASTM D3702 |
| K (wear) Factor | 111 x 10-8 mm³/N-M | 55.0 x 10-10 in³-min/ft-lb-hr | ASTM D3702 |
| Limiting Pressure Velocity | 0.0513 MPa-m/sec | 1460 psi-ft/min | ASTM D792 |
| Electrical Properties | Metric | English | Comments |
| Volume Resistivity | 1.00e+15 ohm-cm | 1.00e+15 ohm-cm | ASTM D257 |
| Dielectric Constant | 3.7 @Frequency 60.0 Hz |
3.7 @Frequency 60.0 Hz |
50% RH; ASTM D150 |
| Dielectric Strength | 19.7 kV/mm | 500 kV/in | ASTM D149 |
| Dissipation Factor | 0.0050 @Frequency 60.0 Hz |
0.0050 @Frequency 60.0 Hz |
ASTM D150 |
| Thermal Properties | Metric | English | Comments |
| CTE, linear | 122 µm/m-°C | 68.0 µin/in-°F | ASTM D696 |
| Melting Point | 175 °C | 347 °F | ASTM D2133 |
| Maximum Service Temperature, Air | 85.0 °C | 185 °F | Continuous; UL746B |
| 149 °C | 300 °F | Intermittent | |
| Deflection Temperature at 0.46 MPa (66 psi) | 169 °C | 336 °F | ASTM D648 |
| Deflection Temperature at 1.8 MPa (264 psi) | 125 °C | 257 °F | ASTM D648 |
| Flammability, UL94 | HB | HB | UL 94 |
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