类别：聚合物；热塑性；聚甲醛（POM）；乙缩醛共聚物，无筋
材料说明：金属探测POM-C级
特性：机械强度高，硬度高，良好的韧性，良好的抗蠕变性能，高冲击强度，即使在低温，非常好的尺寸稳定性（低吸水性），良好的滑动性能和耐磨性良好的切削加工性，良好的电绝缘性和介电性能
物性表：
图：| Physical Properties | Metric | English | Comments |
|---|---|---|---|
| Density | 1.46 g/cc | 0.0527 lb/in³ | ISO 1183-1 |
| Moisture Absorption at Equilibrium | 0.19 % | 0.19 % | 50% RH |
| Water Absorption at Saturation | 0.75 % | 0.75 % | |
| Mechanical Properties | Metric | English | Comments |
| Hardness, Rockwell M | 86 | 86 | ISO 2039-2 |
| Hardness, Shore D | 80 | 80 | |
| Ball Indentation Hardness | 155 MPa | 22500 psi | ISO 2039-1 |
| Tensile Strength | 66.0 MPa | 9570 psi | at Yield; ISO 527-1/-2 |
| Elongation at Break | 15 % | 15 % | ISO 527-1/-2 |
| Elongation at Yield | 14 % | 14 % | ISO 527-1/-2 |
| Tensile Modulus | 2.95 GPa | 428 ksi | ISO 527-1/-2 |
| Flexural Strength | 93.0 MPa | 13500 psi | |
| Flexural Modulus | 2.80 GPa | 406 ksi | |
| Compressive Strength | 25.0 MPa @Strain 1 % |
3630 psi @Strain 1 % |
ISO 604 |
| 44.0 MPa @Strain 2 % |
6380 psi @Strain 2 % |
ISO 604 | |
| 76.0 MPa @Strain 5 % |
11000 psi @Strain 5 % |
ISO 604 | |
| K Factor (ISO) | 45 µm/km | 45 µm/km | |
| Charpy Impact Unnotched | 7.00 J/cm² | 33.3 ft-lb/in² | ISO 179-1/1eU |
| Charpy Impact, Notched | 0.500 J/cm² | 2.38 ft-lb/in² | ISO 179-1/1eA |
| Coefficient of Friction, Dynamic | 0.30 - 0.45 | 0.30 - 0.45 | |
| Electrical Properties | Metric | English | Comments |
| Volume Resistivity | >= 1.0e+13 ohm-cm | >= 1.0e+13 ohm-cm | IEC 60093 |
| Surface Resistivity per Square | >= 1.0e+12 ohm | >= 1.0e+12 ohm | IEC 60093 |
| Thermal Properties | Metric | English | Comments |
| CTE, linear | 130 µm/m-°C @Temperature 23.0 - 100 °C |
72.2 µin/in-°F @Temperature 73.4 - 212 °F |
|
| Thermal Conductivity | 0.310 W/m-K | 2.15 BTU-in/hr-ft²-°F | |
| Melting Point | 165 °C | 329 °F | DSC, 10°C/min.; ISO 11357-1/-3 |
| Maximum Service Temperature, Air | 90.0 °C | 194 °F | Continuous; 20,000 h |
| 105 °C | 221 °F | Continuous; 5,000 h | |
| Deflection Temperature at 1.8 MPa (264 psi) | 100 °C | 212 °F | ISO 75-1/-2 |
| Flammability, UL94 | HB | HB | |
| Oxygen Index | <= 20 % | <= 20 % | ISO 4589-1/-2 |
| Compliance Properties | Metric | English | Comments |
| 3A-Dairy | No | No | |
| European Food 1935/2004 | Yes | Yes | |
| FDA | Yes | Yes | |
| USP Class VI | No | No | |
| Chemical Resistance Properties | Metric | English | Comments |
| Acids, Strong (pH 1-3) | Unacceptable | Unacceptable | |
| Acids, Weak | Limited | Limited | |
| Alcohols | Acceptable | Acceptable | |
| Alkalies, Strong (pH 11-14) | Acceptable | Acceptable | |
| Alkalies, Weak | Acceptable | Acceptable | |
| Chlorinated Solvents | Limited | Limited | |
| Continuous Sunlight | Limited | Limited | |
| Hot Water / Steam | Limited | Limited | |
| Hydrocarbons - Aliphatic | Acceptable | Acceptable | |
| Hydrocarbons - Aromatic | Acceptable | Acceptable | |
| Inorganic Salt Solutions | Acceptable | Acceptable | |
| Ketones, Esters | Acceptable | Acceptable | |
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