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Formula: POM-C
Form: Rod
Material: Polyoxymethylene Copolymer (POMc)
Commodity: Polymers
As part of our extensive range of plastic rods, POM Copolymer Rods are made from a highly engineered thermoplastic and available in 115 variations. POM Copolymer combines stiffness, strength and dimensional stability with inherent lubricity and abrasion resistance. It also has low moisture absorption, making it suitable for applications like gears, rollers and bushings that require tight tolerances. In addition, its chemical resistance makes it ideal for food processing equipment and medical devices. The many options of these versatile POM Copolymer Rods enable tailoring to specific engineering needs across industrial, scientific and medical settings.
Technical Data Sheet Safety Data Sheet Tolerance Properties
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Tolerances

Rod
Diameter +20% / -10%

Material Properties for Polymers

Chemical Resistance
Element Value
Acids - concentrated Poor
Acids - dilute Good-Fair
Alcohols Good-Fair
Alkalis Good
Aromatic hydrocarbons Good
Greases and Oils Good
Halogenated Hydrocarbons Good-Poor
Halogens Poor
Ketones Good - Fair
Electrical Properties
Element Value
Dielectric constant @1MHz 3.7-4.4
Dissipation factor @ 1MHz 0.006-0.18
Dielectric strength( kV mm⁻¹ ) 20@2.3mm
Surface resistivity( Ohm/sq ) 10¹⁵
Volume resistivity( Ohmcm ) 10¹⁵
Physical Properties
Element Value
Flammability HB
Radiation resistance Poor
Resistance to Ultra-violet Poor
Limiting oxygen index( % ) 15
Water absorption - equilibrium( % ) 0.6-0.8
Water absorption - over 24 hours( % ) 0.2-0.25
Density( gcm⁻³ ) 1.41
Mechanical Properties
Element Value
Hardness - Rockwell M80
Poisson's ratio 0.35
Elongation at break( % ) 15-40
Tensile modulus( GPa ) 2.3-2.8
Izod impact strength( J m⁻¹ ) 70-80
Tensile strength( MPa ) 60-70
Thermal Properties
Element Value
Heat-deflection temperature - 0.45MPa( C ) 160
Heat-deflection temperature - 1.8MPa( C ) 110
Lower working temperature( C ) -40
Upper working temperature( C ) 80-120
Specific heat( J K⁻¹ kg⁻¹ ) 1500
Thermal conductivity( W m⁻¹ K⁻¹ ) 0.23-0.3@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 80-120

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