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Ertacetal™ / Acetron™ is family of acetals with greater dimensional stability than polyamides despite having a lower wear resistance. Mitsubishi Chemical Group offers both homopolymer and copolymer grades of POM. Special formulations include an enhanced bearing grade material, a metal- and x-ray-detectable acetal, food-contact compliant acetals, and a range of colors.
In general, acetals do not perform as well in abrasive wear applications as nylons. However, Ertacetal® / Acetron® offers a range of excellent performance attributes including high mechanical strength, stiffness, and hardness, great resilience and resistance to creep, high impact strength at low temperatures, low water absorption for great dimensional stability, and food-contact compatibility.
Acetron™ GP FG POM-C/Ertacetal™ C FG POM-C (Food Grade) is a general purpose polyoxymethylene, copolymer acetal grade that is favored for its porosity free nature, as well as its higher resistance to hydrolysis, strong alkalis and thermal oxidative degradation than homopolymer acetal grades. These food grade, POM-C shapes also offer low moisture absorption and excellent machinability capabilities, making it a very versatile material that can excel in a multitude of environments. Due to these characteristics and their compliance with compositional FDA 21 CFR § 177.2470 and EU 10/2011 requirements, components made from this material are used frequently for food contact applications.
Acetron™ C Sterra™ POM-C is a general purpose, copolymer acetal grade with recycled contents that is often favored for its porosity-free nature. This recycled POM-C also exhibits low moisture absorption and excellent machinability capabilities, making it a very versatile material that can excel in a multitude of environments.
As part of the Sterra™ product portfolio, Acetron™ C Sterra™ POM-C contains recycled POM-C and therefore is associated with a significantly lower carbon footprint compared to similar materials derived from non-recycled feedstocks. For details, please refer to the respective environmental datasheet.
Stock shapes made from Ertacetal™ C ELS POM-C (copolymer acetal) exhibit excellent electrical conductivity qualities, low moisture absorption, high strength and stiffness and great machinability capabilities. This grade in particular is recommended for use in electrical and explosion sensitive applications.
Ertacetal™ C LQ POM-C is a white/natural-colored copolymer polyoxymethylene specifically developed for laser writability via IR-YAG and UV-YAG technologies. The acetal copolymer itself is more resistant to hydrolysis, strong alkalis and thermal-oxidative degradation than the homopolymer acetal grad and offers identical physical properties and machinability to the standard Acetron™ GP/Ertacetal™ C POM-C, including low moisture absorption and porosity-free composition.
Acetron™ VMX FG POM-C (Food Grade) is an EU 10/2011 and compositional FDA 21 CFR § 177.2470 compliant copolymer acetal containing metal and x-ray detectable additives and has bright blue coloring for ease of visual detection. This material has been specifically tailored for use in the food processing and packaging industries where it can easily be traced by different detection systems installed to detect physical contamination in foodstuffs. Additionally, Acetron™ VMX FG POM-C presents good mechanical strength, stiffness and impact strength, making this grade especially well-suited for different applications like gears, scrapers, grippers, etc.
Acetron™ AF Blend/Ertacetal™ H-TF POM-H is a unique thermoplastic material for use in moving parts where low friction and long wear resistance are important. The material has a high strength, toughness, dimensional stability and good machinability as well as improved wear characteristics over unfilled POM-H. Unblended Acetron™ AF Blend/Ertacetal™ H-TF POM-H offers a slightly higher limiting PV and lower coefficient of friction due to additional PTFE content. This added PTFE typically decreases the wear capability and impact strength. Acetron™ AF 100 is available on a custom basis.
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