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Vespel® Characteristics
Vespel® is a high-performance polyimide-based thermoplastic material with notable characteristics: it withstands wide temperature ranges; it is wear and chemical resistant; it has excellent mechanical and insulation properties; it has natural lubricity; and unlike most polymers, it does not produce significant outgassing even at high temperatures.
Vespel® does not melt at any temperature. As a result, it is used in many aerospace, semiconductor and transportation applications. Characteristics include:
- Withstands temperatures up to 550° F
Excellent mechanical strength and stiffness- Ultra low outgassing
- Natural lubricity
- Does not melt at any temperature
- Good wear and chemical resistance
Applications for Vespel®
- Bearings, washers and seal rings
- Seals and insulators
- Semiconductor clamping rings and screws
- Ball seal valves and compressor applications
Contact a Dielectric Manufacturing knowledge expert to discuss the use of Vespel polyimide-based plastic material for fabrication of your parts. Call 800-367-9122 or email sales@dielectricmfg.com.
Vespel Polyimide Material Properties
Dielectric Manufacturing, Richfield, Wisconsin USA dielectricmfg.com Vespel Material Properties Provided By Dielectric Manufacturing, Richfield, Wisconsin
Property Metric units English units
General
Density 1.33e3 - 1.43e3 kg/m^3 0.048 - 0.0517 lb/ft^3
Mechanical
Yield Strength 8.62e7 - 8.96e7 Pa 12.5 - 13 ksi
Tensile Strength 7.24e7 - 1.18e8 Pa 10.5 - 17.1 ksi
Elongation 0.075 - 0.9 % strain 7.5 - 90 % strain
Hardness (Vickers) 2.54e8 - 2.64e8 Pa 25.9 - 26.9 HV
Impact Strength (un-notched) 7.9e3 - 9e3 J/m^2 3.76 - 4.28 ft.lbf/in^2
Fracture Toughness 2.16e6 - 6.4e6 Pa/m^0.5 1.97 - 5.82 ksi/in^0.5
Young's Modulus 2.07e9 - 2.76e9 Pa 0.3 - 0.4 10^6 psi
Thermal
Max Service Temperature 221 - 241 °C 430 - 466 °F
Melting Temperature 375 - 401 °C 707 - 754 °F
Insulator or Conductor Insulator Insulator
Specific Heat Capability 1.39e3 - 1.45e3 J/kg °C 0.333 - 0.346 BTU/lb. °F
Thermal Expansion Coefficient 8.1e-5 - 1.01e-4 strain/°C 45 - 56 µstrain/°F
Eco
CO2 Footprint 9.08 - 10 kg/kg 9.08 - 10 lb/lb
Recyclable Yes Yes
