Customization: | Available |
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Feature: | Strong Mechanical Properties |
CAS No.: | 9002-81-7 |
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Polyformaldehyde is a thermoplastic crystalline polymer. Known as "super steel" or "game steel", also known as polyoxymethylene. The English abbreviation is POM. Generally, the polymer obtained from formaldehyde polymerization has low polymerization degree and is susceptible to pyrolytic polymerization. It can be used as raw material of organic chemical industry, synthetic resin, and also used as drug fumigant.
Folding typical application range
POM has a very low coefficient of friction and good geometric stability, especially suitable for the production of gears and bearings. Because it also has high temperature resistance, it is also used in pipeline devices (pipeline valves, pump housings), lawn equipment, etc.
Performance items | Test condition | test method | test data | Data unit | ||
Basic performance | Melt flow rate | 190ºC,2.16kg | ISO 1133 | 27 | g/10min | |
density | ISO 1183 | 1.41 | g/cm3 | |||
Water absorption | ISO 62 | 0.7 | % | |||
Water absorption rate | ISO 32 | 0.2 | % | |||
Mechanical properties | Bending modulus | 23ºC | ISO 178 | 2600 | MPa | |
Standard elongation at break | 23ºC | ISO 527 | 20 | % | ||
Tensile yield strength | 23ºC | ISO 527 | 65 | MPa | ||
ball indentation hardness | 358N,30s | ISO 2039 | 140 | MPa | ||
elongation | yield | 23ºC | ISO 527 | 8 | % | |
crack | 23ºC | ISO 527 | 30 | % | ||
Notch impact strength of cantilever beam | ISO 180/1EA | 6 | KJ/m2 | |||
Injection shrinkage | Flow direction | 24h,4mm | 2.5-2.7 | |||
vertical direction | 24h,4mm | 2.0-2.2 | ||||
Tensile modulus | 23ºC | ISO 527 | 3000 | MPa | ||
bending strength | 23ºC | ISO 178 | 68 | MPa | ||
Charpy Notched Impact Strength | 179/1EA | 5 | KJ/m2 | |||
Rockwell hardness | 23ºC | ISO 2039 | M82(R114) | |||
Electrical performance | Surface resistivity | IEC 93 | 1015 | Ω | ||
Loss factor | 20ºC,1KHz | IEC 250 | 10 | |||
Dielectric constant | 20ºC,1KHz | IEC 250 | 3.9 | |||
Dielectric constant | 20ºC,50Hz | IEC 250 | 3.9 | |||
Dielectric strength | 20ºC | IEC 243 | 25 | KV/mm | ||
Leak resistance | 21ºC,65%RH | IEC 167 | 7.5 | ×10-4Ω | ||
Loss factor | 20ºC,50Hz | IEC 250 | 20 | ×10-4 | ||
Volume resistivity | IEC 93 | 1015 | Ω.cm | |||
Comparative arc diameter index | IEC 112 | 600 | CTI | |||
Arc resistance | 21ºC,65%RH | ASTM D-495 | 1.9 | mm | ||
Dielectric constant | 20ºC,1MHz | IEC 250 | 3.9 | |||
Loss factor | 20ºC,1MHz | IEC 250 | 85 | |||
Thermal performance | Coefficient of linear expansion | ASTM D-696 | 11 | 1×10-5K-1 | ||
specific heat | 20ºC | 1.48 | J | |||
vicat softening point | 10N | ISO 306 A50 | 163 | ºC | ||
Thermal deformation temperature | 1.8MPa | ISO 75 | 120 | ºC | ||
vicat softening point | 50N | ISO 306 B50 | 150 | ºC | ||
Maximum continuous service temperature | 100 | ºC | ||||
melting point | DSC | ISO 3146 | 172 | ºC | ||
flammability | UL 94(FMVSS) | HB(B50) |
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How long is the price valid?
Dear customer, the plastic market is always fluctuating, under normal circumstances, our offer is valid for seven days.
How many days is the delivery date?
Dear customer, the delivery time is seven to fifteen days after the buyer place the order.
Will samples be sent to customers for testing?
Yes, dear customer, if you have the need for sample testing, we will provide you with samples free of charge.
If you have more questions, you are warmly welcome to negotiate and consult !