POM (Polyoxymethylene), commonly known as Delrin or Acetal, is a high-rigidity engineering thermoplastic offering exceptional dimensional stability, low friction, and clean chip formation.
Engineering Specifications & Parameters
Density
1.41 g/cm³
Cutting Speed
200 - 500 m/min
Machinability
100% (Excellent)
Continuous Temp
80 °C (176 °F)
Tensile Strength
65 MPa
Plastic Machining Best Practices
POM produces crisp, continuous ribbon chips and achieves tight tolerances without burrs.
Machining Recommendations
Tooling: Razor-sharp single-flute or 2-flute upcut router bits or polished carbide end mills.
Feed Rate: Fast feeds to prevent frictional melting.
Stress Relief: Pre-annealing recommended for ultra-precision parts (>100mm).
Frequently Asked Questions
How to prevent POM/Delrin from warping during machining?
Use balanced stock removal from both sides, avoid aggressive clamping pressure, and use sharp, high-rake tools.
