类别：聚合物；热塑性；聚甲醛（POM）；乙缩醛共聚物，无筋
材料说明：centrodal GL具有良好的干运行和应急运行性能。POM + PE改性过程中，一个超高分子量聚乙烯纳入基本聚甲醛聚合物。它会导致摩擦和干滑动行为的改善。应用范围包括轴承衬套、动载荷作用下的结构构件和滑动板。以前centrodal G.
物性表：| Physical Properties | Metric | English | Comments | ||
|---|---|---|---|---|---|
| Density | 1.35 g/cc | 0.0488 lb/in³ | ISO 1183 | ||
| Moisture Absorption at Equilibrium | 0.20 % | 0.20 % | in normal climate 23°C/50%RH; ISO 62 | ||
| Water Absorption at Saturation | 0.80 % | 0.80 % | in water at 23°C; ISO 62 | ||
| Mechanical Properties | Metric | English | Comments | ||
| Ball Indentation Hardness | 110 MPa | 16000 psi | value at 30 sec.; ISO 2039-1 | ||
| Tensile Strength, Yield | 43.0 MPa | 6240 psi | v = 50 mm/min; ISO 527-2 | ||
| Elongation at Break | 15 % | 15 % | ISO 527-2 | ||
| Tensile Modulus | 2.20 GPa | 319 ksi | ISO 527-2 | ||
| Flexural Modulus | 2.00 GPa | 290 ksi | ISO 178 | ||
| Charpy Impact Unnotched | 5.00 J/cm² | 23.8 ft-lb/in² | ISO 179/1eU | ||
| Charpy Impact, Notched | 0.500 J/cm² | 2.38 ft-lb/in² | ISO 179/1eA | ||
| Coefficient of Friction, Dynamic | 0.19 | 0.19 | vs. steel | ||
| Electrical Properties | Metric | English | Comments | ||
| Electrical Resistivity | 1.00e+15 ohm-cm | 1.00e+15 ohm-cm | IEC 60093 | ||
| Surface Resistance | 1.00e+13 ohm | 1.00e+13 ohm | IEC 60093 | ||
| Dielectric Constant | 3.8 @Frequency 100 Hz |
3.8 @Frequency 100 Hz |
IEC 60250 | ||
| 3.8 @Frequency 1e+6 Hz |
3.8 @Frequency 1e+6 Hz |
IEC 60250 | |||
| Dielectric Strength | 35.0 kV/mm | 889 kV/in | in transformer oil; IEC 60243-1 | ||
| Dissipation Factor | 0.0020 @Frequency 100 Hz |
0.0020 @Frequency 100 Hz |
IEC 60250 | ||
| 0.0070 @Frequency 1e+6 Hz |
0.0070 @Frequency 1e+6 Hz |
IEC 60250 | |||
| Thermal Properties | Metric | English | Comments | ||
| CTE, linear | 140 µm/m-°C @Temperature 20.0 °C |
77.8 µin/in-°F @Temperature 68.0 °F |
ISO 11359 | ||
| Melting Point | 166 °C | 331 °F | 10K/min; ISO 3146 | ||
| Maximum Service Temperature, Air | 100 °C | 212 °F | Long Term | ||
| 140 °C | 284 °F | Short term | |||
| Deflection Temperature at 1.8 MPa (264 psi) | 84.0 °C | 183 °F | ISO 75-2 | ||
| Vicat Softening Point | 140 °C | 284 °F | VST/B/50; ISO 306 | ||
| Minimum Service Temperature, Air | -40.0 °C | -40.0 °F | |||
| Flammability, UL94 | HB @Thickness 3.00 mm |
HB @Thickness 0.118 in |
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| HB @Thickness 6.00 mm |
HB @Thickness 0.236 in |
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| De |
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| Food Compliance | yes | BGVV | |||
| yes | FD A |
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