Physical Properties | Metric | English | Comments | ||
---|---|---|---|---|---|
Specific Gravity | 1.42 g/cc | 1.42 g/cc | ASTM D792 | ||
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 |
Immersion 24h; ASTM D570 | ||
1.0 % @Temperature 23.0 °C |
1.0 % @Temperature 73.4 °F |
Saturation, immersed; ISO 62, Similar to | |||
Linear Mold Shrinkage | 0.017 - 0.020 cm/cm @Thickness 3.20 mm |
0.017 - 0.020 in/in @Thickness 0.126 in |
Transverse, 24h; ASTM D955 | ||
0.018 - 0.021 cm/cm @Thickness 3.20 mm |
0.018 - 0.021 in/in @Thickness 0.126 in |
Flow, 24h; ASTM D955 | |||
Linear Mold Shrinkage, Flow | 0.018 - 0.021 cm/cm @Thickness 4.00 mm |
0.018 - 0.021 in/in @Thickness 0.157 in |
Parallel, 24h; ISO 294-4 | ||
0.021 cm/cm @Thickness 2.00 mm |
0.021 in/in @Thickness 0.0787 in |
ISO 294-4 | |||
Linear Mold Shrinkage, Transverse | 0.019 cm/cm @Thickness 2.00 mm |
0.019 in/in @Thickness 0.0787 in |
ISO 294-4 | ||
0.018 - 0.021 cm/cm @Thickness 4.00 mm |
0.018 - 0.021 in/in @Thickness 0.157 in |
Normal, 24h; ISO 294-4 | |||
Melt Flow | 1.0 g/10 min @Load 1.05 kg, Temperature 190 °C |
1.0 g/10 min @Load 2.31 lb, Temperature 374 °F |
ASTM D1238 | ||
2.4 g/10 min @Load 2.16 kg, Temperature 190 °C |
2.4 g/10 min @Load 4.76 lb, Temperature 374 °F |
ISO 1133 | |||
Melt Index of Compound | 1.9 g/10 min @Load 2.16 kg, Temperature 190 °C |
1.9 g/10 min @Load 4.76 lb, Temperature 374 °F |
cm3/10 min; ISO 1133 | ||
Mechanical Properties | Metric | English | Comments | ||
Hardness, Rockwell M | 92 | 92 | ISO 2039/2 | ||
Hardness, Rockwell R | 120 | 120 | ISO 2039/2 | ||
121 | 121 | ASTM D785 | |||
Tensile Strength | 72.0 MPa @Temperature 23.0 °C |
10400 psi @Temperature 73.4 °F |
5mm/min (0.2in/min); ASTM D638 | ||
Tensile Stress | 60.799 MPa @Strain 2.8574 %, Temperature -40.0 °C |
8818.2 psi @Strain 2.8574 %, Temperature -40.0 °F |
ISO 527 | ||
87.176 MPa @Strain 5.7149 %, Temperature -40.0 °C |
12644 psi @Strain 5.7149 %, Temperature -40.0 °F |
ISO 527 | |||
94.877 MPa @Strain 8.5723 %, Temperature -40.0 °C |
13761 psi @Strain 8.5723 %, Temperature -40.0 °F |
ISO 527 | |||
96.84 MPa @Strain 11.43 %, Temperature -40.0 °C |
14050 psi @Strain 11.43 %, Temperature -40.0 °F |
ISO 527 | |||
97.432 MPa @Strain 14.287 %, Temperature -40.0 °C |
14131 psi @Strain 14.287 %, Temperature -40.0 °F |
ISO 527 | |||
97.672 MPa @Strain 17.145 %, Temperature -40.0 °C |
14166 psi @Strain 17.145 %, Temperature -40.0 °F |
ISO 527 | |||
98.055 MPa @Strain 20.002 %, Temperature -40.0 °C |
14222 psi @Strain 20.002 %, Temperature -40.0 °F |
ISO 527 | |||
98.733 MPa @Strain 22.86 %, Temperature -40.0 °C |
14320 psi @Strain 22.86 %, Temperature -40.0 °F |
ISO 527 | |||
99.053 MPa @Strain 25.717 %, Temperature -40.0 °C |
14366 psi @Strain 25.717 %, Temperature -40.0 °F |
ISO 527 | |||
99.549 MPa @Strain 28.574 %, Temperature -40.0 °C |
14438 psi @Strain 28.574 %, Temperature -40.0 °F |
ISO 527 | |||
Tensile Strength, Yield | 72.0 MPa @Temperature 23.0 °C |
10400 psi @Temperature 73.4 °F |
5mm/min (0.2in/min); ASTM D638 | ||
72.0 MPa @Temperature 23.0 °C |
10400 psi @Temperature 73.4 °F |
ISO 527 | |||
Elongation at Break | 40 % @Temperature 23.0 °C |
40 % @Temperature 73.4 °F |
nominal; ISO 527 | ||
50 % @Temperature 23.0 °C |
50 % @Temperature 73.4 °F |
ISO 527 | |||
73 % @Temperature 23.0 °C |
73 % @Temperature 73.4 °F |
5mm/min (0.2in/min); ASTM D638 | |||
Elongation at Yield | 20 % @Temperature 23.0 °C |
20 % @Temperature 73.4 °F |
ISO 527 | ||
21 % @Temperature 23.0 °C |
21 % @Temperature 73.4 °F |
5mm/min (0.2in/min); ASTM D638 | |||
Tensile Modulus | 3.00 GPa @Temperature 23.0 °C |
435 ksi @Temperature 73.4 °F |
5mm/min (0.2in/min); ASTM D638 | ||
3.20 GPa @Temperature 23.0 °C |
464 ksi @Temperature 73.4 °F |
ISO 527 | |||
Flexural Strength | 80.0 MPa @Strain 3.50 %, Temperature 23.0 °C |
11600 psi @Strain 3.50 %, Temperature 73.4 °F |
ISO 178 | ||
92.0 MPa @Strain 5.00 %, Temperature 23.0 °C |
13300 psi @Strain 5.00 %, Temperature 73.4 °F |
ASTM D790 | |||
Flexural Modulus | 2.90 GPa @Temperature 23.0 °C |
421 ksi @Temperature 73.4 °F |
ISO 178 | ||
2.97 GPa @Temperature 23.0 °C |
431 ksi @Temperature 73.4 °F |
ASTM D790 | |||
Izod Impact, Notched | 0.960 J/cm @Temperature 23.0 °C |
1.80 ft-lb/in @Temperature 73.4 °F |
ASTM D256 | ||
Izod Impact, Unnotched | NB @Temperature 23.0 °C |
NB @Temperature 73.4 °F |
ASTM D4812 | ||
Izod Impact, Notched (ISO) | 11.0 kJ/m² @Temperature -40.0 °C |
5.23 ft-lb/in² @Temperature -40.0 °F |
ISO 180/1A | ||
11.0 kJ/m² @Temperature 23.0 °C |
5.23 ft-lb/in² @Temperature 73.4 °F |
ISO 180/1A | |||
Charpy Impact Unnotched | 27.0 J/cm² @Temperature -30.0 °C |
128 ft-lb/in² @Temperature -22.0 °F |
ISO 179/1eU | ||
30.0 J/cm² @Temperature 23.0 °C |
143 ft-lb/in² @Temperature 73.4 °F |
ISO 179/1eU | |||
Charpy Impact, Notched | 0.900 J/cm² @Temperature -30.0 °C |
4.28 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 | 3000 MPa @Temperature 23.0 °C |
435000 psi @Temperature 73.4 °F |
ISO 899 | ||
Tensile Creep Modulus, 1000 hours | 1700 MPa @Temperature 23.0 °C |
247000 psi @Temperature 73.4 °F |
ISO 899 | ||
Electrical Properties | Metric | English | Comments | ||
Volume Resistivity | 8.00e+14 ohm-cm @Temperature 23.0 °C |
8.00e+14 ohm-cm @Temperature 73.4 °F |
ASTM D257 | ||
Surface Resistance | 6.00e+14 ohm @Temperature 23.0 °C |
6.00e+14 ohm @Temperature 73.4 °F |
ASTM D257 | ||
Dielectric Constant | 3.7 @Frequency 1.00e+6 Hz, Temperature 23.0 °C |
3.7 @Frequency 1.00e+6 Hz, Temperature 73.4 °F |
ASTM D150 | ||
Dielectric Strength | 18.0 kV/mm @Thickness 3.20 mm, Temperature 23.0 °C |
457 kV/in @Thickness 0.126 in, Temperature 73.4 °F |
Short Time; ASTM D149 | ||
Dissipation Factor | 0.0050 @Frequency 1.00e+6 Hz, Temperature 23.0 °C |
0.0050 @Frequency 1.00e+6 Hz, Temperature 73.4 °F |
ASTM D150 | ||
Comparative Tracking Index | 600 V @Temperature 23.0 °C |
600 V @Temperature 73.4 °F |
IEC 60112 | ||
600 V @Thickness 3.00 mm, Temperature 23.0 °C |
600 V @Thickness 0.118 in, Temperature 73.4 °F |
UL 746A | |||
Thermal Properties | Metric | English | Comments | ||
CTE, linear, Parallel to Flow | 500 µm/m-°C @Temperature 23.0 - 55.0 °C |
278 µin/in-°F @Temperature 73.4 - 131 °F |
ASTM E 831 | ||
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 | 94.0 µm/m-°C @Temperature -40.0 - 23.0 °C |
52.2 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 |
ASTM E 831 | |||
110 µm/m-°C @Temperature 23.0 - 55.0 °C |
61.1 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 | ||
178 °C | 352 °F | ASTM D3418 | |||
Deflection Temperature at 0.46 MPa (66 psi) | 165 °C | 329 °F | ISO 75-1/-2 | ||
169 °C | 336 °F | Not Annealed; ASTM D648 | |||
Deflection Temperature at 1.8 MPa (264 psi) | 100 °C | 212 °F | ISO 75-1/-2 | ||
110 °C | 230 °F | Not Annealed; ASTM D648 | |||
115 °C | 239 °F | Annealed; ISO 75-1/-2 | |||
UL RTI, Electrical | 110 °C @Thickness 3.00 mm |
230 °F @Thickness 0.118 in |
UL 746B | ||
110 °C @Thickness 1.50 mm |
230 °F @Thickness 0.0591 in |
UL 746B | |||
UL RTI, Mechanical with Impact | 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 | 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 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 3.00 mm |
HB @Thickness 0.118 in |
UL94 | |||
HB @Thickness 1.50 mm |
HB @Thickness 0.0591 in |
UL94 | |||
Oxygen Index | 17 % | 17 % | 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 | Natural 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 | |||||
Impact Resistance, High | |||||
Molecular Wt., High | |||||
Stiffness, High | |||||
Strength, High | |||||
Toughness, Good | |||||
Viscosity, High | |||||
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 | Conveyors | ||||
Fasteners | |||||
Gears | |||||
Housings | |||||
Parts, Engineering | |||||
Sheet | |||||
Tubing |
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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