Polyacetal(POM)
Acetal polymers are semi-crystalline. They offer excellent inherent lubricity, fatigue resistance, and chemical resistance. Acetals suffer from outgassing problems at elevated temperatures, and are brittle at low temperatures. Glass filled, and added lubrication grades are available, flame retardant grades are not.
|
Polyacetal(POM) |
Tensile Strength: |
6000-22,000 psi |
Flexural Modulus: |
120,000-170,000 psi |
Impact Strength: |
0.8-2 ft-lb/in notched izod |
Maximum Temp.: |
180 F long term |
Chemical Resistance: |
excellent |
Cost: |
$$$ |
|