POM-H plastic

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General facts

Polyoxymethylene, homopolymer

Shortening: POM

Color: White, opaque

Coloring options: Almost unlimited

Common uses: Impellers, plain bearings, fine mechanical details, etc.

  • Benefits
  • Restrictions
  • Technical data

Benefits

  • Excellent combination of toughness, stiffness, fatigue strength and creep resistance (spring material).
  • Good moisture and chemical resistance.
  • Useful in a wide temperature range.
  • Resistant to thermal and oxidative degradation.
  • Good resistance to stress relaxation.
  • Good friction and wear properties.
  • Low gas and vapor permeability.
  • Tight tolerances and good dimensional stability of finished details.
  • Qualities with different fillers and additives are available to suit different purposes.

Restrictions

  • Attacked by strong mineral acids (pH below 4).
  • Degraded by UV radiation in unpigmented condition.
  • Approved for contact with food.
  • Hard to glue with yourself or other materials.
  • Should not be used in electrical applications above + 70 ° C.
  • Elongation should not exceed 2-4%.
  • High combustion rate, dangerous gas is formed.
  • Sensitive to criminal instructions.
  • Homopolymer should not be used in alkaline environments (pH above 9).

Download documents
Material data sheet Acetal POM-H

Specific properties of POM-H plastic

The homopolymer POM-H offers about 10% better mechanical properties but these tend to decrease after prolonged use. In hot water or at elevated ambient temperature, the homopolymer POM-H tends to degrade rapidly.

The properties of POM-H material and its higher crystallinity give it a slightly higher density, hardness, and strength compared to POM-C. POM-H plastic offers better mechanical properties in various areas as well as good electrical insulating properties and slightly better chemical resistance than POM-C.