Smiths Local Branch Finder

You are here: → HomeMaterialsEngineering PlasticsAcetal (POM-C & POM-H)

Acetal Engineering PlasticAcetal (POM-C & POM-H)

A versatile Engineering Plastic for many applications

A high-quality general purpose engineering plastic material; the chemical name is polyoxymethylene. It’s available in a range of grades and forms to suit many applications.


The machinability of un-modified acetal is excellent. Good chip forming leads to fine surface finishes. As with all plastic materials, experience has shown that extra care must be taken with larger diameters, especially in the colder months when plastic materials lose some of their toughness and so have less resistance to machining stresses. It’s therefore important that these materials are not machined while in a chilled condition. Full machining instructions may be supplied on request.

Chemical Resistance

Acetal co-polymer has chemical resistance similar to nylon 66, but is slightly more prone to attack – having good resistance to many common solvents, lubricant, esters, ketones and aqueous solutions of acids and alkalis between ph5 and ph11. The co-polymer is not resistant to phenols, cresols, formic acid, concentrated mineral acids and alkalis, and strong oxidising agents including halogens. The homo-polymer has slightly reduced resistance to alkalis and hot water compared with co-polymer.

Technical Assistance

Our knowledgeable staff backed up by our resident team of qualified metallurgists and engineers, will be pleased to assist further on any technical topic. Smiths Metal Centres Limited also boasts an in-house UKAS Accredited Testing Laboratory which is unique in the metal and plastics stockholding sector, and extends our professional services to all our customers.

Download Acetal (POM-C & POM-H) Engineering Plastics Datasheet

Typical Applications:

  • Gears, meter components, valves
  • Discs, impellers, seals, bearings, sliding & spring elements
  • Valve bodies, snap-on connections & pump components
  • Bearing cages, clutch and gearbox parts, sorting & feeding devices
  • Electrical & electronic industry- e.g. coil bodies, insulators


We can also process the material for you, courtesy of 30 band saws available throughout the group which includes availability and local service centre level.

Pick a Product

To find out more about Smiths Metal Centres extensive range of high engineering plastics, click on one of our products on the side menu of this web page.

Have a question or need a detailed quote?

Our staff are ready to take your call. For all supply and technical enquiries call us today
on 0845 527 3331 or click here to contact us.