POM material, also called acetal plastic, is a semi crystalline thermoplastic with high mechanical strength and rigidity. POM material has very good sliding properties, excellent wear resistance and low moisture absorption. The material’s dimensional stability, particularly good fatigue strength and excellent machinability make plastic POM a very versatile engineering material, especially for complex components.
POM APPLICATIONS
Sliding applications, e.g. bearing bushes, rollers, slide rails
Design solutions with snap hooks
Electrically insulating parts
Components in contact with water
Scratch resistant, high gloss visible parts
Wide range of components in the food, pharmaceutical, drinking water and medical technology industries
The main colors of POM are white, black, and blue.
Polyacetal is a formaldehyde-based, semi-crystalline engineering thermoplastic. It is commonly called acetal or polyoxymethylene (POM). It contains the functional group of a carbon bonded to two -OR groups. It has a molecular structure of (CH2O)n.
| Density | 1.41 | kg/dm3 |
| Melting point | 165 | °C |
| Specific thermal capacity | 1500 | J/kg/K |
| Specific thermal conductivy | 0.31 to 0.37 | W/m/K |
| Coefficient of thermal expansion | 12 | ppm/K |
| Property | value | units |
|---|---|---|
| Tensile yield stress | 62 | MPa |
| Tensile modulus | 2700 | MPa |
| Elongation at yield | 2.5 | % |
| Tensile breaking stress | 67 | MPa |
| Elongation at break | 35 | % |
| Impact strength | 80 | kJ/m2 |
| Property | conditions | value | units |
|---|---|---|---|
| Coefficient of friction against steel | 0.3 m/s, 0.49 MPa | 0.31 | |
| Coefficient of friction against steel | 0.3 m/s, 0.98 MPa | 0.37 | |
| Specific wear against steel | 0.49 MPa | 0.65 | mm3/N/km |
| Specific wear against steel | 0.98 MPa | 0.30 | mm3/N/km |
| Coefficient of friction against POM | 0.15 m/s, 0.06 MPa | 0.37 |
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