Full Name
Acetal (Polyoxymethylene, POM)
Polyoxymethylene (POM), also known as acetal, polyacetal, and polyformaldehyde, is an engineering thermoplastic used in precision parts requiring high stiffness, low friction, and excellent dimensional stability.
POM is characterized by its high strength, hardness and rigidity to −40 °C.
Typical applications for injection-molded POM include high-performance engineering components such as small gear wheels, eyeglass frames, ball bearings, ski bindings, fasteners, guns, knife handles, and lock systems. The material is widely used in the automotive and consumer electronics industry.
Density
1.14 - 1.58 g/cc
Tensile Strength, Yield
59.2 MPa
Modulus of Elasticity
2.66 GPa
Surface Resistance
4.06e+15 ohm
Dielectric Strength
26.6 kV/mm
Hot Wire Ignition
9.13 sec
Specific Heat Capacity
1.48 J/g-°C
Max. Service Temperature, Air
106 °C
Tensile Strength, Ultimate
55.3 MPa
Elongation at Break
36.6 %
Electrical Resistivity
2.42e+15 ohm-cm
Dielectric Constant
3.84
Arc Resistance
115 sec
CTE, linear
105 µm/m-°C
Thermal Conductivity
0.286 W/m-K
Flammability, UL94
HB - V-2