Polyacetal (POM)

For everything that moves.

Materials › Polyacetal (POM)

Low friction, dimensional stability and excellent fatigue resistance: gears, guides, cams, hinges. POM, though, is not chosen on a single axis: how well it flows — the melt index varies sixfold from grade to grade — and whether it is homopolymer or copolymer. The homopolymer is stiffer and stronger; the copolymer stands up better to hot water, alkalis and prolonged heat.

POM homopolymer, high viscosity

MFR ≈ 2.5 — The toughest

Thick walls, parts working in fatigue, where the resin must give its most.

Flow 2.5 g/10 min melt mass-flow rate MFR, 190 °C / 2.16 kg, ISO 1133 4 grades
Stiffness 2,975 MPa tensile modulus, ISO 527 4 grades
Density 1.42 g/cm³ density, ISO 1183 3 grades

POM copolymer, medium viscosity

General purpose

Gears, guides, valve bodies: the starting choice.

Grade-dependent figure: check the datasheet of the selected material.

POM copolymer, standard

Easy moulding

Complex geometries, multi-cavity moulds, short cycles.

Grade-dependent figure: check the datasheet of the selected material.

POM homopolymer, high flow

MFR ≈ 15 — Thin and stiff

Long flow paths, thin walls, fine detail that still has to stay stiff.

Flow 15.0 g/10 min melt mass-flow rate MFR, 190 °C / 2.16 kg, ISO 1133 5 grades
Stiffness 3,200 MPa tensile modulus, ISO 527 5 grades
Density 1.42 g/cm³ density, ISO 1183 5 grades

Brands and manufacturers

Data from producers’ datasheets, medians per family: they are for comparing levels with one another, not guaranteed values. We supply the datasheet of the chosen grade on request.

Real components, not renderings

Parts made in our own plants, with finishing done in-house.

Grey tapered duct printed in MJF, on a white background: a circular mouth narrowing into a flat spout.
PA12 duct, thin wall and varying section
Curved grey plate printed in MJF, pierced by dozens of round and shaped holes.
Lightened plate: holes and ribs in a single part
Two black fittings with a square base and a threaded cylindrical body, on a white background.
Same technology, black finish
Hands in blue gloves finishing a drilled grey bracket by hand, with a rotary tool.
We do the finishing ourselves, part by part

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