Acetal Homopolymer (Delrin)


Overview

The general features of the homopolymer Acetal resin are similar to those of the copolymer POM-C. However, the service temperature (under load) is slightly higher but the resistance to hydrolysisis and strong alkalis is slightly lower. POM-H is more commonly known as Delrin®. POM-H has a slightly higher mechanical strength than the POM-C but both are easy to machine and offer excellent dimensional stability.

Benefits:

  • High fatigue resistance.
  • Good dimensional stability.
  • Low coefficient of friction.
  • Good compressive strength, even at low temperature.
  • Good shock resistance, even at low temperature.
  • Excellent machinability especially used on automatic equipment.
  • Being physiologically inert it is suitable for food contact.
  • Can be used in water at 80°C.

Weaknesses:

  • Compared to PA6 it has a lower abrasion resistance, particularly in dirty and dusty environments.

Applications:

It can be precision machined for intricate components with tight tolerances and is one of the most commonly used engineering plastics for mechanical applications such as:

  • Bearings.
  • Cams.
  • Gears & gear wheels.
  • Conveyor rollers.

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