ACETAL

 
Polyoxymethylene (POM), also known as acetal,[1] polyacetal and polyformaldehyde, is an engineering thermoplastic used in precision parts requiring high stiffness, low friction and excellent dimensional stability. 

POM is characterized by its high strength, hardness and rigidity to −40 °C. POM is intrinsically opaque white, due to its high crystalline composition, but it is available in all colors. POM has a density of ρ = 1.410–1.420 g/cm³.[5]

POM homopolymer is a semi-crystalline polymer (75–85% crystalline) with a melting point of 175 °C. The POM copolymer has a slightly lower melting point of 162–173 °C.

 
   Trade Names: Acetron®, Celcon®, Delrin®, Ensital® SD, Ertacetal™, Pomalux®, Semitron® ESD, Sustarin®, TECAFORM®, Ultraform®

 

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