Specialized In Providing Custom Metal Fabrication And Sheet Metal Manufacturing, Quality Metal Machining Services Since 2007
POM (Acetal / Delrin)
CNC MACHINING / Excellent machining ability, Low-friction, Good fatigue strength
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Introduction
POM (Polyoxymethylene), also known as acetal or Delrin, is a semi crystalline thermoplastic with high mechanical strength and rigidity. Acetal polymer has good sliding characteristics and excellent wear resistance, as well as low moisture absorption. The good dimensional stability and particularly good fatigue strength, as well as excellent machining ability, makes POM polymer a highly versatile engineering material, even for complex components.
Abrasive blasting is a finishing process where a media is propelled at a high velocity against a part’s surface to smooth or roughen it, or to remove contaminants,
often in preparation for painting or another finishing process.
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Engineer's Pro Tips
? POM is a versatile and popular plastic in the engineering sector. Its high stiffness and hardness (with a Rockwell hardness of up to D80-85Z) make it a suitable alternative to certain metals, including ordinary carbon steel.
? In addition to hardness, POM has other properties that make it ideal for replacing metals. For example, it has insulation and wear resistance properties comparable to those of certain carbon steels.
? Generally, POM has good processing characteristics. However, it does demonstrate a high shrinkage rate (2% to 3.5%) and has poor corrosion resistance.
? It's elasticity can also result in deformation during the machining process caused by clamping or overheating. POM is also not conducive to polishing (the surface turns white) and cannot be plated or disassembled.
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