| 99.38 MPa @Strain 18.0 %, Temperature -40.0 °C |
14410 psi @Strain 18.0 %, Temperature -40.0 °F |
ISO 11403-1/-2 | |||
| 99.53 MPa @Strain 17.0 %, Temperature -40.0 °C |
14440 psi @Strain 17.0 %, Temperature -40.0 °F |
ISO 11403-1/-2 | |||
| Tensile Strength, Yield | 73.0 MPa @Temperature 23.0 °C |
10600 psi @Temperature 73.4 °F |
ISO 527 | ||
| Elongation at Break | 20 % @Temperature 23.0 °C |
20 % @Temperature 73.4 °F |
nominal; ISO 527 | ||
| 27 % @Temperature 23.0 °C |
27 % @Temperature 73.4 °F |
50mm/min; ISO 527 | |||
| Elongation at Yield | 12 % @Temperature 23.0 °C |
12 % @Temperature 73.4 °F |
ISO 527 | ||
| Tensile Modulus | 3.40 GPa @Temperature 23.0 °C |
493 ksi @Temperature 73.4 °F |
ISO 527 | ||
| Flexural Modulus | 3.10 GPa @Temperature 23.0 °C |
450 ksi @Temperature 73.4 °F |
ISO 178 | ||
| Izod Impact, Notched (ISO) | 7.00 kJ/m² @Temperature 23.0 °C |
3.33 ft-lb/in² @Temperature 73.4 °F |
ISO 180/1A | ||
| Charpy Impact Unnotched | 17.0 J/cm² @Temperature -30.0 °C |
80.9 ft-lb/in² @Temperature -22.0 °F |
ISO 179/1eU | ||
| 17.0 J/cm² @Temperature 23.0 °C |
80.9 ft-lb/in² @Temperature 73.4 °F |
ISO 179/1eU | |||
| Charpy Impact, Notched | 0.600 J/cm² @Temperature -30.0 °C |
2.86 ft-lb/in² @Temperature -22.0 °F |
ISO 179/1eA | ||
| 0.700 J/cm² @Temperature 23.0 °C |
3.33 ft-lb/in² @Temperature 73.4 °F |
ISO 179/1eA | |||
| Thermal Properties | Metric | English | Comments | ||
|---|---|---|---|---|---|
| CTE, linear, Parallel to Flow | 500 µm/m-°C @Temperature -40.0 - 23.0 °C |
278 µin/in-°F @Temperature -40.0 - 73.4 °F |
ISO 11359-1/-2 | ||
| 500 µm/m-°C @Temperature 23.0 - 55.0 °C |
278 µin/in-°F @Temperature 73.4 - 131 °F |
ISO 11359-1/-2 | |||
| 500 µm/m-°C @Temperature 55.0 - 100 °C |
278 µin/in-°F @Temperature 131 - 212 °F |
ISO 11359-1/-2 | |||
| CTE, linear, Transverse to Flow | 90.0 µm/m-°C @Temperature -40.0 - 23.0 °C |
50.0 µin/in-°F @Temperature -40.0 - 73.4 °F |
ISO 11359-1/-2 | ||
| 100 µm/m-°C @Temperature 23.0 - 55.0 °C |
55.6 µin/in-°F @Temperature 73.4 - 131 °F |
ISO 11359-1/-2 | |||
| 140 µm/m-°C @Temperature 55.0 - 100 °C |
77.8 µin/in-°F @Temperature 131 - 212 °F |
ISO 11359-1/-2 | |||
| Melting Point | 178 °C | 352 °F | 10°C/min; ISO 11357-1/-3 | ||
| Deflection Temperature at 0.46 MPa (66 psi) | 165 °C | 329 °F | ISO 75-1/-2 | ||
| Deflection Temperature at 1.8 MPa (264 psi) | 105 °C | 221 °F | ISO 75-1/-2 | ||
| UL RTI, Electrical | 50.0 °C @Thickness 0.750 mm |
122 °F @Thickness 0.0295 in |
UL 746B | ||
| 110 °C @Thickness 1.50 mm |
230 °F @Thickness 0.0591 in |
UL 746B | |||
| 110 °C @Thickness 3.00 mm |
230 °F @Thickness 0.118 in |
UL 746B | |||
| UL RTI, Mechanical with Impact | 50.0 °C @Thickness 0.750 mm |
122 °F @Thickness 0.0295 in |
UL 746B | ||
| 85.0 °C @Thickness 1.50 mm |
185 °F @Thickness 0.0591 in |
UL 746B | |||
| 90.0 °C @Thickness 3.00 mm |
194 °F @Thickness 0.118 in |
UL 746B | |||
| UL RTI, Mechanical without Impact | 50.0 °C @Thickness 0.750 mm |
122 °F @Thickness 0.0295 in |
UL 746B | ||
| 90.0 °C @Thickness 1.50 mm |
194 °F @Thickness 0.0591 in |
UL 746B | |||
| 95.0 °C @Thickness 3.00 mm |
203 °F @Thickness 0.118 in |
UL 746B | |||
| Flammability, UL94 | HB @Thickness 0.750 mm |
HB @Thickness 0.0295 in |
IEC 60695-11-10 | ||
| HB @Thickness 1.50 mm |
HB @Thickness 0.0591 in |
IEC 60695-11-10 | |||
| HB @Thickness 3.00 mm |
HB @Thickness 0.118 in |
IEC 60695-11-10 | |||
| HB @Thickness 0.750 mm |
HB @Thickness 0.0295 in |
UL94 | |||
| HB @Thickness 1.50 mm |
HB @Thickness 0.0591 in |
UL94 | |||
| HB @Thickness 3.00 mm |
HB @Thickness 0.118 in |
UL94 | |||
| Oxygen Index | 21 % | 21 % | ISO 4589-1/-2 | ||
| Processing Properties | Metric | English | Comments | ||
| Melt Temperature | 215 °C | 419 °F | Optimum; Injection Molding | ||
| 210 - 220 °C | 410 - 428 °F | Injection Molding | |||
| Mold Temperature | 90.0 °C | 194 °F | optimum; Injection Molding | ||
| 80.0 - 100 °C | 176 - 212 °F | Injection Molding | |||
| Drying Temperature | 80.0 °C | 176 °F | Injection Molding | ||
| Dry Time | 2.00 - 4.00 hour | 2.00 - 4.00 hour | Injection Molding | ||
| Moisture Content | <= 0.20 % | <= 0.20 % | Injection Molding | ||
| De |
|||||
| Appearance | Black Color | ||||
| Drying Recommended | Not normally required unless moisture content of resin exceeds recommended level | ||||
| Extrudable - Cast Film | Yes | ||||
| Extrudable - Sheet | Yes | ||||
| Extrudable - Tubing | Yes | ||||
| Extrudable - Wire and Cable | Yes | ||||
| Features | Creep Resistance, Good | ||||
| Dimensional Stability, Good | |||||
| Fatigue Resistant | |||||
| Homopolymer | |||||
| Stiffness, High | |||||
| Strength, High | |||||
| Viscosity, Medium | |||||
| Forms | Pellets | ||||
| Generic | Acetal (POM) Homopolymer | ||||
| Material Status | Current | ||||
| Part Marking Code | >POM< | ISO 11469 | |||
| Polymer Family | POM | ||||
| Polymer Type | POM Homopolymer | ||||
| Processing Method | Injection Molding | ||||
| Product Category | Unreinforced Resins | ||||
| Region Available - Global | Yes | ||||
| Resin Identification | POM | ISO 1043 | |||
| RoHS Compliance | Contact Manufacturer | ||||
| Ultrasonic Weldable | Yes | ||||
| Uses | Automotive Applications | ||||
| Fasteners | |||||
| Gears | |||||
| Irrigation Applications | |||||
| Parts, Engineering | |||||
POM 的简介
聚甲醛是一种表面光滑，有光泽的硬而致密的材料，淡黄或白色，可在-40- 100°C温度范围内长期使用。它的耐磨性和自润滑性也比绝大多数工程塑料优越，又有良好的耐油，耐过氧化物性能。很不耐酸，不耐强碱和不耐紫外线的辐射。
POM 物理性质
聚甲醛的拉伸强度达70MPa，吸水性小，尺寸稳定，有光泽，这些性能都比尼龙好，聚甲醛为高度结晶的树脂，在热塑性树脂中是最坚韧的。具抗热强度，弯曲强度，耐疲劳性强度均高，耐磨性和电性能优良。
POM 聚甲醛的性能:
性 能 数 值
比重 1.43
熔点 175°C
伸强度（屈服） 70MPa
伸长率（屈服） 15%
（断裂） 15%
冲击强度（无缺口） 108KJ/m2
（带缺口） 7.6KJ/m2
应用范围
POM属结晶性塑料，熔点明显，一旦达到熔点，熔体粘度迅速下降。当温度超过一定限度或熔体受热时间过长，会引起分解。
POM具有较好的综合性能，在热塑性塑料中是最坚硬的，是塑料材料中力学性能最接近金属的品种之一，其抗张强度、弯曲强度、耐疲劳强度，耐磨性和电性都十分优良，可在-40度--100度之间长期使用。
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