| Physical Properties | Metric | English | Comments | ||
|---|---|---|---|---|---|
| Density | 1.34 g/cc | 0.0484 lb/in³ | ISO 1183 | ||
| Water Absorption | 0.90 % @Thickness 2.00 mm  | 
            0.90 % @Thickness 0.0787 in  | 
            Sim. to ISO 62 | ||
| Moisture Absorption | 0.350 % @Thickness 2.00 mm  | 
            0.350 % @Thickness 0.0787 in  | 
            Sim. to ISO 62 | ||
| Viscosity | 148000 cP @Shear Rate 5000 1/s, Temperature 220 °C  | 
            148000 cP @Shear Rate 5000 1/s, Temperature 428 °F  | 
            ISO 11403-1 -2 | ||
| 171000 cP @Shear Rate 5000 1/s, Temperature 205 °C  | 
            171000 cP @Shear Rate 5000 1/s, Temperature 401 °F  | 
            ISO 11403-1 -2 | |||
| 201000 cP @Shear Rate 5000 1/s, Temperature 190 °C  | 
            201000 cP @Shear Rate 5000 1/s, Temperature 374 °F  | 
            ISO 11403-1 -2 | |||
| 688000 cP @Shear Rate 500 1/s, Temperature 220 °C  | 
            688000 cP @Shear Rate 500 1/s, Temperature 428 °F  | 
            ISO 11403-1 -2 | |||
| 856000 cP @Shear Rate 500 1/s, Temperature 205 °C  | 
            856000 cP @Shear Rate 500 1/s, Temperature 401 °F  | 
            ISO 11403-1 -2 | |||
| 1.058e+6 cP @Shear Rate 500 1/s, Temperature 190 °C  | 
            1.058e+6 cP @Shear Rate 500 1/s, Temperature 374 °F  | 
            ISO 11403-1 -2 | |||
| Linear Mold Shrinkage, Flow | 0.013 cm/cm | 0.013 in/in | ISO 294-4 2577 | ||
| Linear Mold Shrinkage, Transverse | 0.014 cm/cm | 0.014 in/in | ISO 294-4 2577 | ||
| Melt Flow | 1.7 g/10 min @Load 2.16 kg, Temperature 190 °C  | 
            1.7 g/10 min @Load 4.76 lb, Temperature 374 °F  | 
            cm³/10min; ISO 1133 | ||
| 2.0 g/10 min @Load 2.16 kg, Temperature 190 °C  | 
            2.0 g/10 min @Load 4.76 lb, Temperature 374 °F  | 
            ISO 1133 | |||
| Mechanical Properties | Metric | English | Comments | ||
| Hardness, Rockwell M | 58 | 58 | ISO 2039-2 | ||
| Hardness, Rockwell R | 105 | 105 | ISO 2039-2 | ||
| Tensile Stress | 6.10 MPa @Strain 2.00 %, Temperature 90.0 °C  | 
            885 psi @Strain 2.00 %, Temperature 194 °F  | 
            ISO 11403-1 -2 | ||
| 14.3 MPa @Strain 7.90 %, Temperature 90.0 °C  | 
            2070 psi @Strain 7.90 %, Temperature 194 °F  | 
            ISO 11403-1 -2 | |||
| 15.5 MPa @Strain 2.00 %, Temperature 40.0 °C  | 
            2250 psi @Strain 2.00 %, Temperature 104 °F  | 
            ISO 11403-1 -2 | |||
| 16.9 MPa @Strain 13.9 %, Temperature 90.0 °C  | 
            2450 psi @Strain 13.9 %, Temperature 194 °F  | 
            ISO 11403-1 -2 | |||
| 17.6 MPa @Strain 19.8 %, Temperature 90.0 °C  | 
            2550 psi @Strain 19.8 %, Temperature 194 °F  | 
            ISO 11403-1 -2 | |||
| 18.3 MPa @Strain 2.10 %, Temperature 23.0 °C  | 
            2650 psi @Strain 2.10 %, Temperature 73.4 °F  | 
            ISO 11403-1 -2 | |||
| 27.5 MPa @Strain 3.00 %, Temperature 0.000 °C  | 
            3990 psi @Strain 3.00 %, Temperature 32.0 °F  | 
            ISO 11403-1 -2 | |||
| 29.8 MPa @Strain 7.80 %, Temperature 40.0 °C  | 
            4320 psi @Strain 7.80 %, Temperature 104 °F  | 
            ISO 11403-1 -2 | |||
| 33.5 MPa @Strain 13.7 %, Temperature 40.0 °C  | 
            4860 psi @Strain 13.7 %, Temperature 104 °F  | 
            ISO 11403-1 -2 | |||
| 34.6 MPa @Strain 19.5 %, Temperature 40.0 °C  | 
            5020 psi @Strain 19.5 %, Temperature 104 °F  | 
            ISO 11403-1 -2 | |||
| 34.7 MPa @Strain 3.70 %, Temperature -20.0 °C  | 
            5030 psi @Strain 3.70 %, Temperature -4.00 °F  | 
            ISO 11403-1 -2 | |||
| 35.0 MPa @Strain 8.50 %, Temperature 23.0 °C  | 
            5080 psi @Strain 8.50 %, Temperature 73.4 °F  | 
            ISO 11403-1 -2 | |||
| 39.2 MPa @Strain 14.8 %, Temperature 23.0 °C  | 
            5690 psi @Strain 14.8 %, Temperature 73.4 °F  | 
            ISO 11403-1 -2 | |||
| 40.3 MPa @Strain 21.2 %, Temperature 23.0 °C  | 
            5850 psi @Strain 21.2 %, Temperature 73.4 °F  | 
            ISO 11403-1 -2 | |||
| 44.9 MPa @Strain 12.1 %, Temperature 0.000 °C  | 
            6510 psi @Strain 12.1 %, Temperature 32.0 °F  | 
            ISO 11403-1 -2 | |||
| 47.5 MPa @Strain 21.2 %, Temperature 0.000 °C  | 
            6890 psi @Strain 21.2 %, Temperature 32.0 °F  | 
            ISO 11403-1 -2 | |||
| 48.3 MPa @Strain 30.3 %, Temperature 0.000 °C  | 
            7010 psi @Strain 30.3 %, Temperature 32.0 °F  | 
            ISO 11403-1 -2 | |||
| 51.6 MPa @Strain 14.8 %, Temperature -20.0 °C  | 
            7480 psi @Strain 14.8 %, Temperature -4.00 °F  | 
            ISO 11403-1 -2 | |||
| 54.9 MPa @Strain 25.9 %, Temperature -20.0 °C  | 
            7960 psi @Strain 25.9 %, Temperature -4.00 °F  | 
            ISO 11403-1 -2 | |||
| 56.0 MPa @Strain 34.5 %, Temperature -20.0 °C  | 
            8120 psi @Strain 34.5 %, Temperature -4.00 °F  | 
            ISO 11403-1 -2 | |||
| Tensile Strength, Yield | 41.0 MPa | 5950 psi | ISO 527-1/-2 | ||
| Elongation at Break | >= 50 % | >= 50 % | Nominal; ISO 527-1/-2 | ||
| Elongation at Yield | 30 % | 30 % | ISO 527-1/-2 | ||
| Tensile Modulus | 1.40 GPa | 203 ksi | ISO 527-1/-2 | ||
| 0.363172 GPa @Temperature 110 °C  | 
            52.6737 ksi @Temperature 230 °F  | 
            Dynamic; ISO 11403-1 -2 | |||
| 1.3427 GPa @Temperature 30.0 °C  | 
            194.74 ksi @Temperature 86.0 °F  | 
            Dynamic; ISO 11403-1 -2 | |||
| 2.02808 GPa @Temperature -20.0 °C  | 
            294.149 ksi @Temperature -4.00 °F  | 
            Dynamic; ISO 11403-1 -2 | |||
| 5.47652 GPa @Temperature -70.0 °C  | 
            794.303 ksi @Temperature -94.0 °F  | 
            Dynamic; ISO 11403-1 -2 | |||
| 8.16941 GPa @Temperature -100 °C  | 
            1184.87 ksi @Temperature -148 °F  | 
            Dynamic; ISO 11403-1 -2 | |||
| Flexural Strength | 34.0 MPa @Strain 3.50 %  | 
            4930 psi @Strain 3.50 %  | 
            ISO 178 | ||
| Flexural Modulus | 1.10 GPa | 160 ksi | ISO 178 | ||
| Shear Modulus | 0.0911 GPa @Temperature 120 °C  | 
            13.2 ksi @Temperature 248 °F  | 
            Dynamic; ISO 11403-1 -2 | ||
| 0.2153 GPa @Temperature 70.0 °C  | 
            31.23 ksi @Temperature 158 °F  | 
            Dynamic; ISO 11403-1 -2 | |||
| 0.4067 GPa @Temperature 20.0 °C  | 
            58.99 ksi @Temperature 68.0 °F  | 
            Dynamic; ISO 11403-1 -2 | |||
| 0.6135 GPa @Temperature -20.0 °C  | 
            88.98 ksi @Temperature -4.00 °F  | 
            Dynamic; ISO 11403-1 -2 | |||
| 1.1443 GPa @Temperature -50.0 °C  | 
            165.97 ksi @Temperature -58.0 °F  | 
            Dynamic; ISO 11403-1 -2 | |||
| Secant Modulus | 0.187162 GPa @Strain 29.6 %, Temperature -20.0 °C  | 
            27.1460 ksi @Strain 29.6 %, Temperature -4.00 °F  | 
            ISO 11403-1 -2 | ||
| 0.197521 GPa @Strain 24.2 %, Temperature 0.000 °C  | 
            28.6484 ksi @Strain 24.2 %, Temperature 32.0 °F  | 
            ISO 11403-1 -2 | |||
| 0.21859 GPa @Strain 15.6 %, Temperature 40.0 °C  | 
            31.704 ksi @Strain 15.6 %, Temperature 104 °F  | 
            ISO 11403-1 -2 | |||
| 0.234118 GPa @Strain 17.0 %, Temperature 23.0 °C  | 
            33.9565 ksi @Strain 17.0 %, Temperature 73.4 °F  | 
            ISO 11403-1 -2 | |||
| 0.348649 GPa @Strain 14.8 %, Temperature -20.0 °C  | 
            50.5680 ksi @Strain 14.8 %, Temperature -4.00 °F  | 
            ISO 11403-1 -2 | |||
| 0.371074 GPa @Strain 12.1 %, Temperature 0.000 °C  | 
            53.8206 ksi @Strain 12.1 %, Temperature 32.0 °F  | 
            ISO 11403-1 -2 | |||
| 0.382051 GPa @Strain 7.80 %, Temperature 40.0 °C  | 
            55.4127 ksi @Strain 7.80 %, Temperature 104 °F  | 
            ISO 11403-1 -2 | |||
| 0.411765 GPa @Strain 8.50 %, Temperature 23.0 °C  | 
            59.7224 ksi @Strain 8.50 %, Temperature 73.4 °F  | 
            ISO 11403-1 -2 | |||
| 0.775 GPa @Strain 2.00 %, Temperature 40.0 °C  | 
            112 ksi @Strain 2.00 %, Temperature 104 °F  | 
            ISO 11403-1 -2 | |||
| 0.871429 GPa @Strain 2.10 %, Temperature 23.0 °C  | 
            126.392 ksi @Strain 2.10 %, Temperature 73.4 °F  | 
            ISO 11403-1 -2 | |||
| 0.916667 GPa @Strain 3.00 %, Temperature 0.000 °C  | 
            132.953 ksi @Strain 3.00 %, Temperature 32.0 °F  | 
            ISO 11403-1 -2 | |||
| 0.937838 GPa @Strain 3.70 %, Temperature -20.0 °C  | 
            136.024 ksi @Strain 3.70 %, Temperature -4.00 °F  | 
            ISO 11403-1 -2 | |||
| Izod Impact, Notched (ISO) | 90.0 kJ/m² | 42.8 ft-lb/in² | ISO 180/1A | ||
| 20.0 kJ/m² @Temperature -40.0 °C  | 
            9.52 ft-lb/in² @Temperature -40.0 °F  | 
            ISO 180/1A | |||
| Charpy Impact Unnotched | NB | NB | ISO 179/1eU | ||
| NB @Temperature -30.0 °C  | 
            NB @Temperature -22.0 °F  | 
            ISO 179/1eU | |||
| Charpy Impact, Notched | 9.00 J/cm² | 42.8 ft-lb/in² | ISO 179/1eA | ||
| 2.00 J/cm² @Temperature -30.0 °C  | 
            9.52 ft-lb/in² @Temperature -22.0 °F  | 
            ISO 179/1eA | |||
| Tensile Creep Modulus, 1 hour | 1100 MPa @Time 3600 sec  | 
            160000 psi @Time 1.00 hour  | 
            ISO 899-1 | ||
| Tensile Creep Modulus, 1000 hours | 550 MPa @Time 3.60e+6 sec  | 
            79800 psi @Time 1000 hour  | 
            ISO 899-1 | ||
| Electrical Properties | Metric | English | Comments | ||
| Volume Resistivity | 1.00e+14 ohm-cm | 1.00e+14 ohm-cm | IEC 60093 | ||
| Surface Resistance | 1.00e+14 ohm | 1.00e+14 ohm | IEC 60093 | ||
| Dielectric Constant | 3.8 @Frequency 1.00e+6 Hz  | 
            3.8 @Frequency 1.00e+6 Hz  | 
            IEC 60250 | ||
| 4.4 @Frequency 100 Hz  | 
            4.4 @Frequency 100 Hz  | 
            IEC 60250 | |||
| Comparative Tracking Index | 600 V | 600 V | IEC 60112 | ||
| Thermal Properties | Metric | English | Comments | ||
| CTE, linear, Parallel to Flow | 130 µm/m-°C | 72.2 µin/in-°F | ISO 11359-1/-2 | ||
| CTE, linear, Transverse to Flow | 140 µm/m-°C | 77.8 µin/in-°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) | 100 °C | 212 °F | ISO 75-1/-2 | ||
| Deflection Temperature at 1.8 MPa (264 psi) | 60.0 °C | 140 °F | ISO 75-1/-2 | ||
| Glass Transition Temp, Tg | -35.0 °C | -31.0 °F | 10°C/min; ISO 11357-1/-2 | ||
| Flammability, UL94 | HB @Thickness 1.50 mm  | 
            HB @Thickness 0.0591 in  | 
            IEC 60695-11-10 | ||
| Flame Spread | 60 mm/min @Thickness 1.00 mm  | 
            2.4 in/min @Thickness 0.0394 in  | 
            ISO 3795 (FMVSS 302) | ||
| De | 
        |||||
| Additives | Lubricants | ||||
| Release agent | |||||
| Delivery form | Pellets | ||||
| Emissions | <8 mg/kg | VDA 275 | |||
| Part Marking Code | >POM-HI< | ISO 11469 | |||
| Processing | Blow Moulding | ||||
| Coatable | |||||
| Injection Moulding | |||||
| Other Extrusion | |||||
| Profile Extrusion | |||||
| Sheet Extrusion | |||||
| Regional Availability | Asia Pacific | ||||
| Europe | |||||
| Global | |||||
| Near East/Africa | |||||
| North America | |||||
| South and Central America | |||||
| Resin Identification | POM-HI | ISO 1043 | |||
| UL recognition | UL | ||||
POM 的简介 
POM强度、刚度高,弹性好,减磨耐磨性好。其力学性能优异,比强度可达50.5MPa,比刚度可达2650MPa,与金属十分接近。POM的力学性能随温度变化小,共聚POM比均聚POM的变化稍大一点。
POM的冲击强度较高,但常规冲击不及ABS和PC;POM对缺口敏感,有缺口可使冲击强度下降90%之多。
POM的疲劳强度十分突出,10交变载荷作用后,疲劳强度可达35MPa,而PA和PC仅为28MPa。
POM的蠕变性与PA相似,在20℃、21MPa、3000h时仅为2.3%,而且受温度的影响很小。
POM的摩擦因数小,耐磨性好(POM>PA66>PA6>ABS>HPVC>PS>PC),极限PV值很大,自润滑性好。
POM制品对磨时,高载荷作用时易产生类似尖叫的噪声。 
POM 化学性质 
POM 按分子链结构不同,聚甲醛可分为均聚甲醛和共聚甲醛,前者密度、结晶度、熔点都高,但是热稳定性差,加工温度窄(10度),对酸堿的稳定性略低;后者密度、结晶度、熔点较低,但热稳定性好,不易分解,加工温度宽(50度)   。
POM 不足之处在于:由受强酸腐蚀,耐侯差,粘合性差,热分解与软化温度接近,限氧指数小。它们广泛用于汽车工业,电子电器,机械设备等。还可以做水龙头、框窗、洗漱盆。
POM具有很低的摩擦系数和很好的几何稳定性,特别适合于制作齿轮和轴承。由于它还具有耐高温特性,因此还用于管道器件(管道阀门、泵壳体),草坪设备等。
POM 环境性能:   
POM不耐强酸和氧化剂,对烯酸及弱酸有一定的稳定性。
POM的耐溶剂性良好,可耐烃类、醇类、醛类、醚类、汽油、润滑油及弱碱等,并可在高温下保持相当的化学稳定性。吸水性小,尺寸稳定性好。   
POM的耐候性不好,长期在紫外线作用下,力学性能下降,表面发生粉化和龟裂。   
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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PA6T,46,9T、PC、PC/ABS、PBT、ABS、PPA、PPS、POM、PMMA、TPE、PPO、LCP液晶聚合物。
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参考图如下:
 

