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

Ultem

Ultem

Ultem (polyetherimide) is a plastic that performs exceptionally well in high-temperature and electrical environments. 

Updated: 8/20/26

Exceptional electrical and high-temperature performance

Ultem

Polyetherimide, commonly known as Ultem, is a durable plastic engineered for exceptional electrical performance and reliable operation at high temperatures.

Given its mechanical, electrical, and thermal properties, Ultem is ideal for medical instrument components, scientific equipment parts, electrical connectors, and semiconductor components.

Performance Characteristics

  • High dielectric strength
  • Easy to machine and fabricate
  • Extremely strong and stiff
  • Resistant to hydrolysis when exposed to hot water and steam

Common Brands

  • Ultem
  • SUSTAPEI
  • TECAPEI

HDPE Properties

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

    Tensile Strength 15,000 psi
    Tensile Modulus of Elasticity 430,000 psi
    Tensile Elongation 60%
    Flexural Strength 22,000 psi
    Flexural Modulus of Elasticity 480,000 psi
    Compressive Strength 21,900 psi
    Hardness Shore D 86
    Izod Impact 1.0

  • Thermal Properties

    Coefficient of Linear Thermal Expansion 3.1 in/in/°F x 10-5
    Heat Deflection Temperature (66 psi/264 psi) 410 / 392 °F
    Max Continuous Service Temperature in Air 338 °F

  • Electrical Properties

    Dielectric Strength 830 V/mil

  • Optical Properties

    Light Transmittance -- %
    Haze -- %