CNC machining in POM | Manufacturing Materials

CNCSheet Metal

Manufacturing. Machining.

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POM

4.9 (102 Reviews) 6303 orders

Material type: Plastic, Weather resistant

POM or polyoxymethylene is an engineering thermoplastic material, also known as acetal, Delrin, polyacetal or polyformaldehyde. It is known for its excellent stiffness and ability to exhibit low friction and dimensional stability. The material has good chemical resistance and wear resistance, and its excellent rigidity brings excellent results. However, POM material has poor heat resistance, is sensitive to heat, has high elasticity, has a relatively large thermal expansion coefficient, and is easily deformed after CNC processing due to the elimination of internal stress.

Process compatibility

CNC Milling CNC Turning

Material Color

White

Black

Material advantages

Strong resistance to repeated impacts, good electrical properties, good recovery, self-lubricity, good wear resistance, excellent dimensional stability; high mechanical strength and rigidity; highest fatigue strength; environmental resistance, resistance to organic solvents good.

Material shortcomings

Weather resistance is not good, long-term under the action of ultraviolet rays, the mechanical properties will decline, and the surface will be powdered and cracked.

Recommended description

Properties

Name
Tensile strength	89.6 MPa
Yield strength	72.4 MPa
Modulus of elasticity	4 GPa
Elongation at break	15% - 75 %
Hardness	24.8 HV
Maximum service temperature	96.9 °C
Thermal expansion coefficent	202 10^-6 ºC
Thermal conductivity	0.35 W/(m⋅°C)