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 C是一种用途广泛的材料具有良好的耐化学性，良好的可加工性，和表面滑移性能。应用包括滑动部件和辊，齿轮，棘轮，凸轮，和泵组件。
物性表：| Physical Properties | Metric | English | Comments | ||
|---|---|---|---|---|---|
| Density | 1.41 g/cc | 0.0509 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 | ||
| Hardness, Rockwell M | 84 @Thickness 10.0 mm |
84 @Thickness 0.394 in |
ISO 2039-2 | ||
| Ball Indentation Hardness | 140 MPa | 20300 psi | value at 30 sec.; ISO 2039-1 | ||
| Tensile Strength, Yield | 63.0 MPa | 9140 psi | v = 50 mm/min; ISO 527-2 | ||
| Elongation at Break | 31 % | 31 % | ISO 527-2 | ||
| Tensile Modulus | 2.60 GPa | 377 ksi | ISO 527-2 | ||
| Flexural Modulus | 2.50 GPa | 363 ksi | ISO 178 | ||
| Charpy Impact Unnotched | 22.0 J/cm² | 105 ft-lb/in² | ISO 179/1eU | ||
| Charpy Impact, Notched | 0.800 J/cm² | 3.81 ft-lb/in² | ISO 179/1eA | ||
| 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 | 40.0 kV/mm | 1020 kV/in | in transformer oil; IEC 60243-1 | ||
| Dissipation Factor | 0.0030 @Frequency 100 Hz |
0.0030 @Frequency 100 Hz |
IEC 60250 | ||
| 0.0080 @Frequency 1e+6 Hz |
0.0080 @Frequency 1e+6 Hz |
IEC 60250 | |||
| Comparative Tracking Index | 600 V | 600 V | IEC 60112 | ||
| Thermal Properties | Metric | English | Comments | ||
| CTE, linear | 110 µm/m-°C @Temperature 20.0 °C |
61.1 µin/in-°F @Temperature 68.0 °F |
ISO 11359 | ||
| Thermal Conductivity | 0.310 W/m-K | 2.15 BTU-in/hr-ft²-°F | |||
| Melting Point | 165 °C | 329 °F | 10K/min; ISO 3146 | ||
| Maximum Service Temperature, Air | 105 °C | 221 °F | Long Term | ||
| 140 °C | 284 °F | Short term | |||
| Deflection Temperature at 1.8 MPa (264 psi) | 96.0 °C | 205 °F | ISO 75-2 | ||
| Vicat Softening Point | 150 °C | 302 °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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