Polyoxymethylene (POM / Acetal)
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Polyoxymethylene (POM / Acetal)
POM, also known as Acetal or Delrin®, is a strong, low-friction engineering thermoplastic. It is dimensionally stable and resistant to wear, making it perfect for precision mechanical parts.
- High strength and rigidity
- Low friction and excellent wear resistance
- Excellent machinability
- Moisture resistant and dimensionally stable
• Gears and cams
• Bearings and bushings
• Lock components
• Conveyor systems
Product Property & Details
| Property | Details |
|---|---|
| Types Available: | Homopolymer, Copolymer |
| Density: | 1.41 – 1.43 g/cm³ |
| Hardness: | Shore D: 85 – 90 |
| Impact Strength: | Good (Notched Izod: 1.5 – 2.5 ftlb/in) |
| Thermal Conductivity: | 0.31 W/m·K |
| Coefficient of Thermal Expansion: | 100 ×10⁻⁶ /°C |
| Glass Transition Temperature: | -60°C |
| Melting Point: | 175 – 185°C |
| Dielectric Strength: | 15 – 20 kV/mm |
| Flammability Rating: | UL 94 HB |
| UV Resistance: | Poor (requires stabilizers) |
| Weatherability: | Moderate |
| Moisture Absorption: | 0.2 – 0.5% |
| Creep Resistance: | Excellent |
| Chemical Resistance: | Excellent to fuels, oils; poor to acids |