POM Polyacetal Resin (Polyoxymethylene)

Acetal copolymer and homopolymer pellets by melt flow, for gears, clips and precision parts

POM, polyoxymethylene or acetal (HS 3907.10), is the engineering plastic of gears, fuel-system parts, zips, clips, bearings and conveyor components: stiff, dimensionally stable, low-friction and resistant to fuels and solvents. It comes in two chemistries. Copolymer POM, made by Celanese (Hostaform), Polyplastics (Duracon), Korea Engineering Plastics (Kepital), Kolon Plastics (Kocetal), Mitsubishi Engineering-Plastics (Iupital) and the Chinese producers led by Yuntianhua, is the volume grade, more stable to hot water and alkali and easier to process. Homopolymer POM, Delrin from Celanese since the DuPont spin-off, is slightly stiffer and stronger. Grades are specified by melt flow at 190 °C under 2.16 kg: about 9 g/10 min for general injection, 27 for thin-wall and fast-cycle parts, and 2.5 for extrusion of rod and sheet; glass-fibre reinforced grades at 10 to 25 per cent and low-friction, UV-stabilised, antistatic and medical grades sit beside them. A buyer states the chemistry, the melt flow, any filler, the colour and whether the lot is prime, because the producers name grades differently and a Kocetal K300 is not interchangeable with a Hostaform C 9021 without a datasheet comparison.

Korea, Japan, China, Germany and the United States are the exporters; Platts has published weekly POM copolymer spot assessments for Europe, Brazil and the United States since October 2024, and Asian producers price against them and the Chinese domestic market. A general-purpose copolymer at melt flow 27 was offered at about USD 1,630 to 1,640 per tonne FOB Busan in the third quarter of 2025, Chinese domestic product sat near USD 1,850 to 1,910 per tonne in early 2026, and US prices were about USD 2,650 per tonne, so a delivered price depends on the origin as much as the grade. POM from the named producers moves through appointed distributors and the producers' own regional offices, and the first document a buyer sees is the distributor's authorisation or the producer's allocation confirmation, with the certificate of analysis for the lot. CBIL brokers POM copolymer and homopolymer from producer distributors against that authorisation, the producer's certificate of analysis and SGS or Intertek inspection at stuffing where the buyer wants it, in 25 kg bags on pallets, about 16 to 18 tonnes in a 20 ft container, on FOB, CFR and CIF terms. Send the grade you run, the melt flow, filler and colour, and the monthly volume.

See also: ABS resin: the other engineering styrenic · Nylon 6

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Excluded origins are not offered, including product re-exported, blended or re-processed through a third country. Every lot moves with a certificate of origin naming the producing plant, mine or grower country, and nothing is quoted before the seller and loading point are known.