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Formula: UHMWPE, HMPE, HPPE
Form: Disk
Material: Ultra-high-molecular-weight polyethylene (UHMWPE, HMPE)
CAS Number: 9002-88-4
Commodity: Polymers
Color: Natural
UHMWPE disks offer a high-performance plastic product in over 30 variations. UHMWPE, or ultra-high molecular weight polyethylene, is known for its toughness, low friction, and chemical resistance. The UHMWPE disks from Goodfellow have uniform thickness and diameter tolerance ideal for use as wear pads, gears, rollers, and other low-friction sliding components across industrial, medical and scientific applications. With a comprehensive range of size and thickness to choose from, these UHMWPE disks provide flexibility for prototyping and production.
Technical Data Sheet Safety Data Sheet Tolerance Properties
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Tolerances

Disk
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

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