The standard material for precision drives and sliding parts
POM (polyoxymethylene, also called acetal) has high crystallinity, good rigidity and strength, a low coefficient of friction with self-lubrication, and is dimensionally stable and resistant to fuels and chemicals. It is the most established engineering plastic for replacing copper and zinc alloys in gears, slide rails, snap fits and fluid-handling parts. Yilong supplies BASF Ultraform® copolymer POM, covering general-purpose injection, wear and sliding, toughened low-odour, glass-fibre reinforced and weathering functional grades, with grade selection and small-batch trials.
Material properties
POM comes in homopolymer and copolymer types: the homopolymer is slightly higher in rigidity and strength but weaker in heat ageing and chemical resistance, while the copolymer blocks degradation with carbon-carbon links and is more stable long term. Ultraform® is a copolymer POM and the figures below are copolymer values. Physical property values for a specific grade are available from our sales team.
Product series
Selection follows the application: general parts, drive and sliding parts, automotive interior parts and reinforced structural parts each have their own series, with grade names beginning N / S / W / H. Specific grades and property data are available from our sales team.
General-purpose injection
N2320 003 / S2320 003 and similar: the benchmark for rigidity and dimensional stability.
Wear and sliding
N2310 P / N2770 K / W2320 003: low friction, self-lubricating and quiet in operation.
Toughened low-odour
N2640 Z2 / Z4 / Z6 and LEV2: high impact with low emissions and low odour.
Glass-fibre reinforced
N2200 G23 / G43 / G53: higher rigidity and strength and improved creep resistance.
Weathering and functional
N2320 U03 for UV resistance, N2520 L antistatic and N2320 C conductive.
Extrusion and stock shapes
H4320 and similar, extruded into thick-wall rod and sheet for secondary machining.
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| Series | Property focus | Typical applications |
|---|---|---|
| General-purpose injection | High rigidity, high strength and dimensionally stable, at a good cost-performance ratio | Snap fits, fasteners, housings, connectors |
| Wear and sliding | Low friction, self-lubricating, wear resistant and quiet in operation | Gears, worm wheels, bearings, slide rails, conveyor chain links |
| Toughened low-odour | High impact and fatigue resistant with low emissions and low odour | Automotive interior parts, snap fits, seat and door panel parts |
| Glass-fibre reinforced | Higher rigidity, strength and dimensional stability, creep resistant | Structural parts, modular conveyor belts, load-bearing brackets |
| Weathering and functional | UV resistance, antistatic and conductive options matched to the requirement | Outdoor parts, antistatic electronic parts, conductive components |
| Extrusion and stock shapes | Extruded into thick-wall rod and sheet for easy secondary machining | Rod, sheet and blanks for machined parts |
The table above sets out where each series sits and what it is used for; no physical property values are listed. Specific grades, data sheets and compliance documents are available from our sales team.
Typical applications
Wherever a metal part has to run without lubrication, resist wear, stay quiet and tolerate oil, POM is the replacement candidate — and the automotive applications are the most concentrated.
Automotive
Fuel system parts, door lock and window regulator mechanisms, seat belt parts, interior gears and sun visors
Precision drives
Gears, worm wheels, cams, bearings and bushes, slide rails and blocks
Electrical and electronic
Switches, connector housings, coil formers, knobs and structural parts
Industry and logistics
Conveyor chain plates, modular belts, pump and valve parts, industrial fasteners
Consumer goods
Toothbrushes, toys, stationery, furniture slides, zips
Sanitary and plumbing
Tap cartridges, shower heads, irrigation nozzles, cistern fittings
From grade selection to volume production
Injection moulding
Runs on standard reciprocating-screw machines over a wide processing window, but POM is sensitive to overheating and residence time, so barrel temperature and dwell time need controlling.
Drying and regrind
Moisture pick-up is low, so long drying is usually unnecessary; the regrind ratio needs controlling to avoid degradation and embrittlement.
Extrusion and profiles
Can be extruded into thick-wall rod, sheet and profiles for later turning and milling.
Grade selection and trials
We match the grade to friction and wear, strength, low odour, UV resistance and conductivity requirements, and support small trial quantities.
The Ultraform® range covers wear resistance, toughened low-odour, glass-fibre reinforcement, antistatic and conductive options; data sheets and compliance documents are available from our sales team. If you need help selecting POM, PPA or PEEK, just send us your operating conditions.
Need help selecting a POM grade or a trial quantity?
Send us the part function (drive / sliding / structural / fluid handling) and your operating conditions — temperature, media, load and volume — and we will match the grade and quote a lead time.