POM Copolymer Rod

POM Copolymer Rod delivers high stiffness, wear resistance, and dimensional stability in a rigid, machinable cylindrical form, making it ideal for precision mechanical components. The copolymer structure improves thermal and chemical resistance, extending service life in demanding environments. Industries employ POM copolymer rods in automotive, marine, and industrial machinery for bushings, rollers, and valve components. Specific applications include precision bearings in water-exposed environments, gear blanks for low-noise drives, and wear-resistant spacers in conveyor systems. In research, rods are used to evaluate machining parameters, test frictional behavior under dry and lubricated conditions, and develop prototypes for high-load applications. The combination of machinability, environmental stability, and mechanical strength makes POM copolymer rods essential in both industrial production and experimental engineering.

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Tolerance

Properties

Reference & Citations

each

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