Acetal Copolymer (POM)

Acetal Copolymer Resin Characteristics & Uses

To avoid improper resin selection, Contact PMC for additional help in determining the exact engineering resin required for your application.

Please Note: PMC does not sell the material listed below.  We only use the material list to inform visitors that we are experienced in processing  these materials for many fine products.

MaterialAcetal Copolymer
Chemical NameAcetal Copolymer (POM); Acetal Polyoxymethylene Copolymer; Lubricomp
 StructureCrystaline
OpacityOpaque
StrengthTensile Strength: 6400 – 10600 psi Yield
Specific Gravity1.38 to 1.44
Shrinkage2.0 – 3.5%
Melting Point347 F
 Deflection Temperature
  • 320°F Unannealed at 66 psi
  • 230°F Unannealed at 264 psi
Service Temperature230°F
Applications

Acetal Copolymer resin is used in applications requiring a combination of strength, low moisture absorption, chemical resistance and dimensional stability. It’s also used for high-performance engineering components. Acetal Copolymer is widely used in the consumer electronics industry and the automotive industry.

Specific applications for Acetal Copolymer resin include:

  • Bushings
  • Rollers
  • Wear Strips
  • Small Gear Wheels
  • Ball Bearings
  • Fasteners
  • Gas Meters
  • Medical Technology
  • Disposable Applications
  • Aerosol Valves
  • Lock Systems
  • Fuel Tank Modules
AdvantagesAcetal Copolymer resin is used for its high strength, rigidity, toughness and dimensional stability. It also has good wear and friction properties that can be improved by compounding with additives.

Like Acetal Homopolymer resin, the Copolymer is easy to machine. However, compared to Homopolymer, Acetal Copolymer resin exhibits better resistance to organic & inorganic solvents and acids.

Disadvantages

The disadvantages of Acetal Copolymer resin include:

  • Longer molding cycle times
  • Sinks
  • Relatively High Cost