Skip to content


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

Acetal

Acetal for CNC Machining

Acetal is a strong, low-friction plastic with excellent wear properties, suitable for precise applications in various environments.

Updated: 8/20/26

A low friction, stiff, high strength plastic with good wear properties

Acetal

Acetal, often known by the popular brand name Delrin, is a plastic characterized by low friction and high stiffness. Delrin boasts outstanding dimensional precision, making it perfect for applications where accuracy is essential. It also possesses relatively high toughness, providing resistance to impact and wear.

Delrin’s minimal elongation allows it to retain its shape under stress without significant deformation. Delrin is widely utilized across various industries, including automotive, aerospace, and consumer goods.

Performance Characteristics

  • Excellent machinability
  • Excellent wear properties in wet and dry environments
  • Low friction
  • Strong and stiff
  • Good chemical resistance

Common Brands

  • Delrin
  • SUSTARIN
  • TECAFORM

Acetal Properties

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

    Tensile Strength 10,000 psi
    Tensile Modulus of Elasticity 450,000 psi
    Tensile Elongation 75%
    Flexural Strength 14,300 psi
    Flexural Modulus of Elasticity 420,000 psi
    Compressive Strength -- psi
    Hardness (Rockwell) R121
    Izod Impact 1.5 ft-lbs/in

  • Thermal Properties

    Coefficient of Linear Thermal Expansion 6.8 in/in/°F x 10-5
    Heat Deflection Temperature (66 psi/264 psi) 336 / 257 °F
    Max Continuous Service Temperature in Air 185 °F

  • Electrical Properties

    Dielectric Strength 500 V/mil

  • Optical Properties

    Light Transmittance -- %
    Haze -- %