Plastics Innovation & Manufacturing Experts



Also known as


Basic Properties

High strength, good wear properties and a porosity-free product. Has excellent machinability properties and has good creep resistance.

Common Uses

Acetal is a very hard and stiff plastic with extremely good mechanical characteristics.

Having excellent creep resistance and dimensional stability it is ideally suited to precision gears, bearings, snap fit assemblies and due to its low water absorption, is used for parts that operate under water between 60 and 90 degrees celsius.

It has excellent dielectric properties and is also used in electrical insulators. Acetal is more rigid than Nylon although it has a low melting temperature and has a low impact strength.

Its chemical resistance is good but not as good as Teflon.


Acetal Ertacetal C Physical Properties 
Specific Gravity Units g/cm31.41
Continuous Operating Temperature Unit °C – 5,000Hrs / 20,000Hrs115/110
Tensile Strength Units MPa68
Impact Resistance Units Charpy KJ/m2>150
Impact Resistance Units Izod KJ/m27
Hardness Units Rockwell M84
Co-efficient of Thermal Expansion Units mm/(mmxK) x 10-6 avg value 23-60°C110
Dielectric Strength Units KV/mm20
Surface Resistivity Units Ohms>1×1013
Flammability Oxygen Index %15
Flammability UL94HB
FDA ApprovedYes (Natural)

Available Products

Machined Acetal Parts

Acetal Rod
Outside diameter: 6 to 150mm

Acetal Tube
Outside diameter: 20 to 250mm

Acetal Sheet
Thickness: 1 to 50mm
Sizes: 1000 x 610mm / 2000 x 1000mm / 3000 x 610m

Acetal Tape Rolls
Thickness: 0.5 to 0.8mm