DuPont™ Vespel® Polyimide Properties

Physical, mechanical, thermal, electrical, and optical properties of DuPont™ Vespel® polyimide

TYPICAL PROPERTIES
  UNITS ASTM TEST  
Tensile Strength psi D638 *
Flexural Modulus of Elasticity psi D790 450,000
Izod Impact (notched) ft-lbs/in of notch D256 0.8
Heat Deflection Temperature (66psi / 264psi) °F D648  -    ~680
Water Absorption
(Immersion 24 hours)
% D570 0.24

 

PHYSICAL PROPERTIES
  UNITS ASTM TEST  
Specific Gravity - D792 1.43
Water Absorption
(Immersion 24 hours)
% D570 0.24

 

MECHANICAL PROPERTIES
  UNITS ASTM TEST  
Tensile Strength psi D638 *
Tensile Modulus of Elasticity psi D638 -
Tensile Elongation % D638 *
Flexural Strength psi D790 16,000
Flexural Modulus of Elasticity psi D790 450,000
Compressive Strength psi D695 19,300
Hardness scale as noted D785, D2240 -
Izod Impact ft-lbs/in D256 0.8

 

THERMAL PROPERTIES
  UNITS ASTM TEST  
Coefficient of Linear Thermal Expansion in/in/°F x 10-5 D696 3.0
Heat Deflection Temperature (66psi / 264psi) °F D648  -    ~680
Max Continuous Service Temperature In Air °F - 500

 

ELECTRICAL PROPERTIES
  UNITS ASTM TEST  
Dielectric Strength V/mil D149 560

 

OPTICAL PROPERTIES
  UNITS ASTM TEST  
Light Transmittance % D1003 -
Haze % D1003 -

 

OTHER
  UNITS ASTM TEST  
Coefficient of Friction - Dynamic *

Values may vary according to brand name. Please ask your Curbell Plastics representative for more specific information about an individual brand.

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