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Certifications ISO 13485:2016 | AS9100D | ITAR | FDA Registered | CAGE Code 5TTR7 

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  1. Materials
  2. UHMW
UHMW
Wear Resistance, Chemical Resistance, Low Friction

UHMW for CNC Machining

UHMW is a remarkably durable plastic known for its excellent abrasion and wear resistance.

Please note

The information contained herein are typical values intended for reference and comparison purposes only. They should NOT be used as a basis for design specifications or quality control.

Design Tip

To minimize costs, reduce the number of part setups, inspection dimensions, or strict tolerances, and avoid deep pockets with small radii.

Hardness

Material hardness is based on the Rockwell Hardness Scale.

View spec sheet

Low cost plastic known for being extremely tough, abrasion resistant and versatile

UHMW

UHMW (ultra high molecular weight polyethylene) is a remarkably durable plastic known for its excellent abrasion and wear resistance.

The adaptability of polyethylene has led to its widespread use in numerous industrial applications that demand strength, low friction, and resistance to chemicals.

Disadvantages of UHMW plastic include:

  • Difficult to bond with adhesives
  • Not suitable for use at elevated temperatures
  • Poor dimensional stability 
  • Low strength and stiffness 
  • Difficult to print or paint

Performance Characteristics

  • Low friction
  • Extremely tough and durable
  • Easy to fabricate
  • Excellent abrasion and chemical resistance
  • Low moisture absorption

Common Brands

  • Polystone M
  • Tivar
  • GUR

UHMW Properties

  • Mechanical Properties
  • Thermal Properties
  • Electrical Properties
  • Optical Properties
  • Mechanical Properties

    Tensile Strength 3,100 psi
    Tensile Modulus of Elasticity -- psi
    Tensile Elongation 350%
    Flexural Strength -- psi
    Flexural Modulus of Elasticity 110,000 psi
    Compressive Strength -- psi
    Hardness Shore D 64
    Izod Impact 18.0 ft-lbs/in

  • Thermal Properties

    Coefficient of Linear Thermal Expansion 11.1in/in/°F x 10-5
    Heat Deflection Temperature (66 psi/264 psi) -- °F
    Max Continuous Service Temperature in Air 180 °F

  • Electrical Properties

    Dielectric Strength -- V/mil

  • Optical Properties

    Light Transmittance -- %
    Haze -- %