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.
Material Acetal Copolymer
Chemical Name Acetal Copolymer (POM); Acetal Polyoxymethylene Copolymer; Lubricomp
 Structure Crystaline
Opacity Opaque
Strength Tensile Strength: 6400 – 10600 psi Yield
Specific Gravity 1.38 to 1.44
Shrinkage 2.0 – 3.5%
Melting Point 347 F
 Deflection Temperature
  • 320°F Unannealed at 66 psi
  • 230°F Unannealed at 264 psi
Service Temperature 230°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
Advantages Acetal 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

For the most up-to-date information on engineering-grade resins, please visit: https://plastics.ulprospector.com/.

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