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Polyoxymethylene (POM)

Polyoxymethylene (POM) is one of the most common semi-crystalline structural plastics due to it’s combination of rigidity, toughness and dimensional stability. The regular molecular structure of POM allows it to achieve a crystallinity of 80%, which is higher than any other plastic except PE. POM is found as both homo- and copolymer. The homopolymer has a higher crystallinity which provides better abrasion properties, as well as stiffer and harder. While the copolymer has some better chemical resistance and is easier to process.

POM Properties

  • Semi-crystalline structure with a glass transition temperature of -60 C and a crystalline melting point of 165 C
  • Excellent abrasion properties
  • High impact resistance down to -40 C
  • High stiffness and hardness
  • Good fatigue properties
  • Low water absorption
  • Good chemical resistance
  • Easy to process
  • High shrinkage
  • Flame retardant grades are not available


FORMOCON® is a product by our supplier Formosa Plastics®. The material exhibits standard flow and minimal mold, designed for injection parts. Used in buttons & press-in fasteners, plumbing & hardware, gears, electronics, automotive parts, household appliances and bearings.

POM ski binding
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