POM – Polyacetal
POM is a stiff, hard and springy material, which is suitable for machining. It is short-chipped, and a high surface finish can be achieved. POM is the most universally used material.
Types
POM is found in two types – H and C. Where POM C is the standard today. Despite the hardness, POM has a high elasticity and impact resistance. In a short period of time POM can withstand high temperatures up to 140°C. Longer term exposure to, or use in hot water over 65°C, can cause crispness and crazing (hydrolysis). POM is found in different modified types. POM as semi-finished is manufactured by extruding and is delivered in the colors: nature (white) and black, where black is the most UV-stable.
Application
The food industry uses POM to a great extent, as the material is easy to clean and will not be significantly affected by those cleaning products, that usually are used.
- Wheel
- Bearings
- Rolls
- Cams
- Gears
- Bushings
- Steering wheels
- Precision engineering
- Bring
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Special and modified types, are obtainable from the plant. We stock a wide range of POM-C in bars, hollow bars and sheets in both natural and black.
| POM C | |
|---|---|
| Density, g/cm³ | 1,41 |
| Ball pressure hardness, N/mm² | 135 |
| Tensile strength, MPa | 65 |
| Modulus of elasticity, MPa | 2700 |
| Toughness, KJ/m² | 6,5 |
| Moisture absorption 50%RF, % | 0,2-0,8 |
| Application temperature, 0C | -50/+100 |
| Coefficient of expansion, 10-5/0C | 11 |
| Friction, µ | 0,3 |
| Acid (diluted) | – |
| Base | + |
| Solvent | + |
| UV-light (nature/black) | -/+ |
+ = useful / – = non useful
