类别：聚合物；热塑性；聚甲醛（POM）；乙缩醛共聚物，无筋
材料说明：POM W是一种半结晶的热塑性塑料，它是认证按照监管系统DVGW，技术法规，工作形式的W 270，因此，特别适合于饮用水源附近的安全应用。优良的可加工性，其基本的聚甲醛聚合物的尺寸稳定性和耐化学性保持。它证实了食品监管标准和BFR / FDA一致。POM w-plastics往往作为瓶装饮用水机械施工要点。
物性表：| Physical Properties | Metric | English | Comments | ||
|---|---|---|---|---|---|
| Density | 1.41 g/cc | 0.0509 lb/in³ | ISO 1183 | ||
| Moisture Absorption | 0.200 % @Temperature 23.0 °C |
0.200 % @Temperature 73.4 °F |
normal humidity; ISO 62 | ||
| Water Absorption at Saturation | 0.80 % @Temperature 23.0 °C |
0.80 % @Temperature 73.4 °F |
ISO 62 | ||
| Mechanical Properties | Metric | English | Comments | ||
| Hardness, Rockwell M | 84 | 84 | test piece 10mm thick; ISO 2039-2 | ||
| Ball Indentation Hardness | 140 MPa | 20300 psi | ISO 2039-1 | ||
| Tensile Strength | 63.0 MPa | 9140 psi | 5 mm/min; ISO 527-2 | ||
| Tensile Strength, Yield | 63.0 MPa | 9140 psi | 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/IeA | ||
| 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 1.00e+6 Hz |
3.8 @Frequency 1.00e+6 Hz |
IEC 60250 | |||
| Dielectric Strength | 20.0 kV/mm | 508 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 1.00e+6 Hz |
0.0080 @Frequency 1.00e+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 23.0 - 60.0 °C |
61.1 µin/in-°F @Temperature 73.4 - 140 °F |
ISO 11359 | ||
| Thermal Conductivity | 0.310 W/m-K | 2.15 BTU-in/hr-ft²-°F | DIN 52612 | ||
| Melting Point | 165 °C | 329 °F | DSC, 10 K/m; ISO 3146 | ||
| Maximum Service Temperature, Air | 105 °C | 221 °F | continuous | ||
| 140 °C | 284 °F | short term | |||
| Deflection Temperature at 0.46 MPa (66 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 - 6.00 mm |
HB @Thickness 0.118 - 0.236 in |
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| Color | Natural | ||||
| Food Compliance BfR: | Yes | ||||
| Food Compliance FDA | Yes | ||||
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