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

HDPE

HDPE for CNC Machining

HDPE (high density polyethylene) is a plastic prized for its strength, chemical resistance, impact resistance, and minimal moisture absorption. Learn more about our HDPE CNC machining services.

Updated: 8/20/26

A low cost, durable, and chemically resistant plastic

HDPE

HDPE is a high-density polyethylene known for being lightweight, having low moisture absorption, resisting chemicals and corrosion, and possessing high strength.

It is ideal for use in orthotic and prosthetic devices, water storage, and tanks.

Performance Characteristics

  • Low moisture absorption 
  • Good chemical and corrosion resistance
  • Easy to fabricate and machine
  • Low weight
  • Abrasion resistance

Common Brands

  • Polystone G
  • Sanatec
  • Orthoform

HDPE Properties

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

    Tensile Strength 4,000 psi
    Tensile Modulus of Elasticity -- psi
    Tensile Elongation 600%
    Flexural Strength -- psi
    Flexural Modulus of Elasticity 200,000 psi
    Compressive Strength -- psi
    Hardness Shore D 69
    Izod Impact --

  • Thermal Properties

    Coefficient of Linear Thermal Expansion 9.0 in/in/°F x 10-5
    Heat Deflection Temperature (66 psi/264 psi) 172 / - °F
    Max Continuous Service Temperature in Air 170 °F

  • Electrical Properties

    Dielectric Strength -- V/mil

  • Optical Properties

    Light Transmittance -- %
    Haze -- %