| Physical Properties | Metric | English | Comments | ||
|---|---|---|---|---|---|
| Density | 1.42 g/cc | 0.0513 lb/in³ | ISO 1183 | ||
| Water Absorption | 0.30 % @Temperature 23.0 °C |
0.30 % @Temperature 73.4 °F |
Equilibrium 50%RH; ISO 62, Similar to | ||
| 0.60 % @Temperature 23.0 °C |
0.60 % @Temperature 73.4 °F |
Immersion 24h; ISO 62, Similar to | |||
| 1.4 % @Temperature 23.0 °C |
1.4 % @Temperature 73.4 °F |
Saturation, immersed; ISO 62, Similar to | |||
| Linear Mold Shrinkage | 0.019 cm/cm @Thickness 2.00 mm |
0.019 in/in @Thickness 0.0787 in |
Normal; ISO 294-4 | ||
| 0.020 cm/cm @Thickness 2.00 mm |
0.020 in/in @Thickness 0.0787 in |
Parallel; ISO 294-4 | |||
| Melt Flow | 7.0 g/10 min @Load 2.16 kg, Temperature 190 °C |
7.0 g/10 min @Load 4.76 lb, Temperature 374 °F |
ISO 1133 | ||
| Mechanical Properties | Metric | English | Comments | ||
| Tensile Strength, Yield | 70.0 MPa @Temperature 23.0 °C |
10200 psi @Temperature 73.4 °F |
ISO 527 | ||
| Elongation at Break | 35 % @Temperature 23.0 °C |
35 % @Temperature 73.4 °F |
ISO 527 | ||
| Elongation at Yield | 18 % @Temperature 23.0 °C |
18 % @Temperature 73.4 °F |
ISO 527 | ||
| Tensile Modulus | 3.00 GPa @Temperature 23.0 °C |
435 ksi @Temperature 73.4 °F |
ISO 527 | ||
| Flexural Modulus | 2.90 GPa @Temperature 23.0 °C |
421 ksi @Temperature 73.4 °F |
ISO 178 | ||
| Charpy Impact, Notched | 0.800 J/cm² @Temperature -30.0 °C |
3.81 ft-lb/in² @Temperature -22.0 °F |
ISO 179/1eA | ||
| 1.10 J/cm² @Temperature 23.0 °C |
5.23 ft-lb/in² @Temperature 73.4 °F |
ISO 179/1eA | |||
| Tensile Creep Modulus, 1 hour | 2700 MPa @Temperature 23.0 °C |
392000 psi @Temperature 73.4 °F |
ISO 899 | ||
| Tensile Creep Modulus, 1000 hours | 1500 MPa @Temperature 23.0 °C |
218000 psi @Temperature 73.4 °F |
ISO 899 | ||
| Electrical Properties | Metric | English | Comments | ||
| Dielectric Constant | 3.7 @Frequency 1.00e+6 Hz, Temperature 23.0 °C |
3.7 @Frequency 1.00e+6 Hz, Temperature 73.4 °F |
IEC 60250 | ||
| 3.8 @Frequency 100 Hz, Temperature 23.0 °C |
3.8 @Frequency 100 Hz, Temperature 73.4 °F |
IEC 60250 | |||
| Thermal Properties | Metric | English | Comments | ||
| CTE, linear, Parallel to Flow | 100 µm/m-°C @Temperature -40.0 - 23.0 °C |
55.6 µin/in-°F @Temperature -40.0 - 73.4 °F |
ISO 11359-1/-2 | ||
| 110 µm/m-°C @Temperature 23.0 - 55.0 °C |
61.1 µin/in-°F @Temperature 73.4 - 131 °F |
ISO 11359-1/-2 | |||
| 150 µm/m-°C @Temperature 55.0 - 100 °C |
83.3 µin/in-°F @Temperature 131 - 212 °F |
ISO 11359-1/-2 | |||
| CTE, linear, Transverse to Flow | 100 µm/m-°C @Temperature -40.0 - 23.0 °C |
55.6 µin/in-°F @Temperature -40.0 - 73.4 °F |
ISO 11359-1/-2 | ||
| 110 µm/m-°C @Temperature 23.0 - 55.0 °C |
61.1 µin/in-°F @Temperature 73.4 - 131 °F |
ISO 11359-1/-2 | |||
| 160 µm/m-°C @Temperature 55.0 - 100 °C |
88.9 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) | 158 °C | 316 °F | ISO 75-1/-2 | ||
| Deflection Temperature at 1.8 MPa (264 psi) | 92.0 °C | 198 °F | ISO 75-1/-2 | ||
| Processing Properties | Metric | English | Comments | ||
| Melt Temperature | 205 °C | 401 °F | Optimum; Injection Molding | ||
| 200 - 210 °C | 392 - 410 °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 | Natural Color | ||||
| Features | VOC, Low | ||||
| Forms | Pellets | ||||
| Generic | Acetal (POM) Homopolymer | ||||
| Material Status | Preliminary Data | ||||
| Part Marking Code | >POM< | ISO 11469 | |||
| Polymer Family | POM | ||||
| Polymer Type | POM Homopolymer | ||||
| Processing Method | Injection Molding | ||||
| Product Category | Low Emissions Resins | ||||
| Unreinforced Resins | |||||
| Region Available - Global | Yes | ||||
| Resin Identification | POM | ISO 1043 | |||
| RoHS Compliance | Contact Manufacturer | ||||
| Uses | Fasteners | ||||
| Gears | |||||
| 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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