Acetal Machining | Acetal Machined Parts | Penta Precision       023 9266 8334

Acetal Machining

A Guide to Acetal CNC Machined Parts: Properties, Applications and Design Considerations

What is Acetal?Black Acetal Machined Part - Scientific

Acetal or POM (Polyoxymethylene) is an engineering plastic known for being amongst the strongest and stiffest of all thermoplastics.

There are two general types of Acetal resins available: Acetal Homopolymer and Acetal Copolymer.

Acetal homopolymer resins are made by the DuPont Company under the trade name Delrin®. Homopolymers are typically used in highly regulated industries.

Acetal copolymers are made by several companies. Slightly softer than Acetal homopolymers, the Acetal copolymers have a lower coefficient of friction.

Main Attributes of Acetal:

The two Acetal polymers do share many similar characteristics, however there are some significant differences which will determine which is most suitable for your application.

Acetal Copolymer: 
  • Absorbs very little moisture
  • High mechanical strength and rigidity
  • Improved dimensional stability over comparable homopolymer formulations due to the lower level of crystallinity
  • Low coefficient of friction
  • Good compressive strength
  • Good shock resistance
  • Better chemical resistance with high pH solutions
  • Lower centerline porosity than homopolymer in extruded shapes
  • Excellent machinability


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Acetal Homopolyer:

Detailed information about Acetal for designers can be found in the tabs below. Please note: this information is provided as a guide only.

Acetal Machining Service - Acetal Milling & Turning

Penta Precision supplies highly accurate Acetal machined parts throughout the UK. Customers turn to us when they have had quality and delivery issues with their existing suppliers and need a reliable precision machining partner.

Penta Precision provides the following Acetal machining services: 

Reasons to Choose Penta:

  • ISO 9001:2015 quality assurance
  • Consistent high quality machined parts
  • Reliable delivery dates - our track record speaks volumes
  • Exceptional customer service and communication
  • Machining design advice
  • Extensive experience in our field
What Makes Penta Different?

There are 3 key elements that run through the core of our company and staff at every level to ensure we deliver an exemplary service that goes above and beyond. We like to call these our 3 C's:

  • We Communicate well 
  • We take Care at each stage
  • Our service is Consistent

See our ‘Proven Process’ page to find out more

We are regularly machining Acetal for customers all over the UK. Our customers depend on our machining expertise as well as our outstanding delivery performance, to machine the highest quality parts. If you'd like to discuss how we can help you with your Acetal machining requirements, here's a list of ways to get in touch with us.

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