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

PPSU

PPSU for CNC Machining

PPSU is a thermoplastic that can endure high temperatures and offers exceptional impact resistance.

Updated: 8/20/26

High temperature thermoplastic with excellent impact resistance

PPSU

PPSU (polyphenylsulfone) is a high temperature thermoplastic material with outstanding impact resistance. It's resistant to hot water and steam and can withstand repeated cycles in a steam autoclave.

A general purpose extrusion grade of PPSU offers exceptional hydrolytic stability and better toughness than most commercially available high-temperature polymers. 

Performance Characteristics

  • High heat deflection temperature
  • Excellent thermal stability and impact resistant
  • Good chemical and environmental stress cracking resistance
  • Steam and radiation resistant

Common Brands

  • Radel

PPSU Properties

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

    Tensile Strength 10,100 psi
    Tensile Modulus of Elasticity 340,000 psi
    Tensile Elongation 60 - 120%
    Flexural Strength 13,200 psi
    Flexural Modulus of Elasticity 350,000 psi
    Compressive Strength 14,350 psi
    Hardness R120
    Izod Impact 13.0 ft-lbs/in

  • Thermal Properties

    Coefficient of Linear Thermal Expansion 3.1 in/in/°F x 10-5
    Heat Deflection Temperature (66 psi/264 psi) -- / 405 °F
    Max Continuous Service Temperature in Air 392 °F

  • Electrical Properties

    Dielectric Strength 360 V/mil

  • Optical Properties

    Light Transmittance -- %
    Haze -- %