UHMWPE Disk

UHMWPE Disk, fabricated from ultra-high molecular weight polyethylene, is a high-performance polymer known for exceptional wear resistance, chemical inertness, and self-lubricating properties. Its disk form is useful in tribological studies, biomedical testing, and structural components requiring high impact resistance. Industries including biomedical, automotive, and chemical processing employ UHMWPE disks in joint replacement simulations, wear-resistant bearing surfaces, and chemically stable test fixtures. Specific applications include orthopedic implant testing components, tribological wear pads in mechanical systems, and bio-inert disks for pharmaceutical contact surfaces. In research, UHMWPE disks are examined for fatigue crack propagation, cross-linking effects on wear behavior, and irradiation-induced modifications for biomedical enhancements. Their combination of biocompatibility, wear endurance, and mechanical stability ensures critical value in both biomedical innovation and industrial engineering applications.

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Tolerance

Properties

Reference & Citations

each

Tolerances

Disc

Thickness		±20%

Material Properties for Polymers

Chemical Resistance

Element	Value
Acids - concentrated	Good-Fair
Acids - dilute	Good
Alcohols	Good
Alkalis	Good
Aromatic hydrocarbons	Fair
Greases and Oils	Good-Fair
Halogenated Hydrocarbons	Fair-Poor
Halogens	Fair-Poor
Ketones	Good-Fair

Mechanical Properties

Element	Value
Coefficient of friction	0.1-0.2
Hardness - Rockwell	R50-70
Poisson's ratio	0.46
Elongation at break( % )	500
Tensile modulus( GPa )	0.2-1.2
Izod impact strength( J m⁻¹ )	1000
Tensile strength( MPa )	20-40

Electrical Properties

Element	Value
Dielectric constant @1MHz	2.3
Dissipation factor @ 1MHz	1-10x 10⁻⁴
Dielectric strength( kV mm⁻¹ )	28
Surface resistivity( Ohm/sq )	10¹³
Volume resistivity( Ohmcm )	10¹⁸

Physical Properties

Element	Value
Flammability	HB
Radiation resistance	Fair
Resistance to Ultra-violet	Poor
Limiting oxygen index( % )	17
Water absorption - over 24 hours( % )	0.01
Density( gcm⁻³ )	0.94

Thermal Properties

Element	Value
Heat-deflection temperature - 0.45MPa( C )	69
Heat-deflection temperature - 1.8MPa( C )	42
Upper working temperature( C )	55-95
Specific heat( J K⁻¹ kg⁻¹ )	1900
Thermal conductivity( W m⁻¹ K⁻¹ )	0.42-0.51@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	130-200