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GEHR Plastics POM-C Acetal
| Category | Polymer , Thermoplastic , Acetal (POM) |
| Manufacturer | GEHR Plastics Inc |
| Trade Name | |
| Port | Shanghai port,China |
| Trade Terms | FOB, CFR, CIF |
| Payment Terms | L/C, T/T, Western Union |
| Download PDF | GEHR Plastics POM-C Acetal.pdf  |
| Price | EMAIL US sales@lookpolymers.com |
Material Notes:
Polyoxymethylene can be used in temperatures up to 100°C. The high surface strength is only surpassed by a few materials. POM shows good sliding properties and high resistance to wear and tear because of the high strength and smooth surface. There is a very low risk of stress cracks. POM-C exhibits a high thermal stability and a high resistance to chemicals.Properties:no microporosityhigh strengthhigh rigidityhigh thermal stabilitylow water absorptionhigh dimension stabilitygood electrical insulating propertiesvery good sliding propertieshigh resistance to stress cracksnot resistant to high concentrated acidsdifficult to glue and paintApplications include bearings, fittings, gear wheels, parts for pumps, screws, bobbins, parts for textile industry, and medium for coating lines.
| Physical Properties | Metric | English | Comments |
|---|---|---|---|
| Specific Gravity | 1.39 g/cc | 1.39 g/cc | ISO 1183 |
| Water Absorption | 0.20 % | 0.20 % | ISO 62 |
| Mechanical Properties | Metric | English | Comments |
|---|---|---|---|
| Ball Indentation Hardness | 125 MPa | 18100 psi | ISO 2039 |
| Tensile Strength, Yield | 63.0 MPa | 9140 psi | ISO 527 |
| Elongation at Break | 31 % | 31 % | ISO 527 |
| Elongation at Yield | 10 % | 10 % | ISO 527 |
| Modulus of Elasticity | 2.60 GPa | 377 ksi | ISO 527 |
| Charpy Impact Unnotched | NB | NB | ISO 179 |
| Charpy Impact, Notched | 0.600 J/cm² | 2.86 ft-lb/in² | ISO 179 |
| Coefficient of Friction | 0.35 | 0.35 | DIN 53375 |
| Thermal Properties | Metric | English | Comments |
|---|---|---|---|
| CTE, linear | 120 µm/m-°C @Temperature 20.0 °C |
66.7 µin/in-°F @Temperature 68.0 °F |
DIN 53752 |
| Maximum Service Temperature, Air | 100 °C | 212 °F | |
| Deflection Temperature at 0.46 MPa (66 psi) | 155 °C | 311 °F | ISO 75 |
| Deflection Temperature at 1.8 MPa (264 psi) | 95.0 °C | 203 °F | ISO 75 |
| Vicat Softening Point | 150 °C | 302 °F | VST/B/50; ISO 306 |
| Flammability, UL94 | HB | HB |
| Electrical Properties | Metric | English | Comments |
|---|---|---|---|
| Volume Resistivity | >= 1.00e+13 ohm-cm | >= 1.00e+13 ohm-cm | VDE 0303 |
| Surface Resistivity per Square | >= 1.00e+13 ohm | >= 1.00e+13 ohm | VDE 0303 |
| Dielectric Constant | 3.8 @Frequency 1.00e+6 Hz |
3.8 @Frequency 1.00e+6 Hz |
DIN 53483 |
| Dielectric Strength | 40.0 kV/mm | 1020 kV/in | VDE 0303 |
| Dielectric Loss Index | 0.0050 @Frequency 1.00e+6 Hz |
0.0050 @Frequency 1.00e+6 Hz |
DIN 53483 |
| Comparative Tracking Index | 600 V | 600 V | CTI; IEC 60112 |
| Descriptive Properties | Value | Comments |
|---|---|---|
| Acid Resistance | no | |
| Aromatic Resistance | yes | |
| Bondability | no | |
| CKW Resistance | limited | |
| Color | Natural | |
| Hydrocarbonate Resistance | yes | |
| Hydroxide Resistance | yes | |
| Ketone Resistance | yes | |
| Physiological indifference according | yes | |
| Resistance Against Hot Water | yes | |
| UV Stabilization | no |
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