POM Homopolymer Rod

POM Homopolymer Rod delivers high rigidity, excellent wear resistance, and superior fatigue strength in a solid cylindrical form that is easily machinable into complex precision parts. Its high crystallinity enhances dimensional stability and load-bearing capacity, making it a preferred choice for demanding engineering applications. Industries use POM homopolymer rods in bushings, rollers, and gear blanks across automotive, marine, and industrial machinery. Specific applications include water-resistant bearing components, low-noise gear assemblies, and load-supporting spacers in conveyor systems. In research, they are used to optimize machining parameters, investigate polymer surface modifications for improved tribology, and evaluate fatigue life under variable load profiles. The rod format’s combination of machinability, mechanical integrity, and reliability under load secures its importance in advanced manufacturing and mechanical design.

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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	Poor - Fair
Alcohols	Good-Fair
Alkalis	Poor
Aromatic hydrocarbons	Good
Greases and Oils	Good
Halogenated Hydrocarbons	Good-Poor(?)
Halogens	Poor
Ketones	Good - Fair

Mechanical Properties

Element	Value
Coefficient of friction	0.2-0.35
Hardness - Rockwell	M94
Poisson's ratio	0.35
Elongation at break( % )	40-75
Tensile modulus( GPa )	2.9-3.1
Izod impact strength( J m⁻¹ )	75-130
Tensile strength( MPa )	70

Electrical Properties

Element	Value
Dielectric constant @1MHz	3.7
Dissipation factor @ 1MHz	0.005
Dielectric strength( kV mm⁻¹ )	20
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( % )	0.6-0.9
Water absorption - over 24 hours( % )	0.25
Density( gcm⁻³ )	1.42

Thermal Properties

Element	Value
Heat-deflection temperature - 0.45MPa( C )	170
Heat-deflection temperature - 1.8MPa( C )	135
Upper working temperature( C )	80-120
Specific heat( J K⁻¹ kg⁻¹ )	1500
Thermal conductivity( W m⁻¹ K⁻¹ )	0.22-0.24@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	122