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Polyoxymethylene (POM)
2.5-3.5 usd/kg
Polyoxymethylene (POM), also known as acetal, is a high-performance engineering thermoplastic used for its combination of mechanical properties combined with low surface friction and excellent dimensional stability. Available in both homopolymer (POM-H) and copolymer (POM-C) forms, POM is widely used in precision parts that require high stiffness, low wear, and consistent performance over a wide range of temperatures. Its natural lubricity and high fatigue resistance make it ideal for gears, bearings, bushings, and other moving components, while its low moisture absorption ensures reliable performance in humid environments.
POM’s versatility is further enhanced by the availability of reinforced grades, such as glass fibre (GF) and carbon fibre (CF) composites, which enhance stiffness, strength, and heat resistance. This allows POM materials to be tailored for demanding structural applications in automotive, electronics, consumer goods, and industrial machinery. While POM-H offers slightly higher mechanical properties, POM-C stands out for its superior resistance to hydrolysis and chemicals, making it the preferred choice for applications involving water or aggressive substances.
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Sustainability concerns
Non-renewable ingredients
Raw material generates polluting by-products
Low circularity potential
Microplastics
POM-C is the copolymer form of polyoxymethylene (POM), known for its superior chemical resistance, especially to alkalis and hydrolysis, and better dimensional stability in moist or chemically aggressive environments. Copolymer grades are available under brands like Celcon, Hostaform, Ultraform, and Kepital.
While it has slightly lower strength, stiffness, and hardness than POM-H, it compensates with improved processability, lower cost, and easier machining. POM-C is widely used in applications where chemical stability, cleanliness, and resistance to hot water or steam are important, such as in food processing, medical devices, and fluid handling components. Its balanced properties make it a versatile engineering plastic for general-purpose and chemically demanding applications