PEEK Properties

Physical, mechanical, thermal, electrical, and optical properties of PEEK

TYPICAL PROPERTIES
  UNITS ASTM TEST  
Tensile Strength psi D638 14,000
Flexural Modulus of Elasticity psi D790 590,000
Izod Impact (notched) ft-lbs/in of notch D256 1.6
Heat Deflection Temperature (66psi / 264psi) °F D648  -    306
Water Absorption
(Immersion 24 hours)
% D570 0.50

 

PHYSICAL PROPERTIES
  UNITS ASTM TEST  
Specific Gravity - D792 1.32
Water Absorption
(Immersion 24 hours)
% D570 0.50

 

MECHANICAL PROPERTIES
  UNITS ASTM TEST  
Tensile Strength psi D638 14,000
Tensile Modulus of Elasticity psi D638 490,000
Tensile Elongation % D638 60
Flexural Strength psi D790 24,600
Flexural Modulus of Elasticity psi D790 590,000
Compressive Strength psi D695 -
Hardness scale as noted D785, D2240 M105, R126, Shore D 85
Izod Impact ft-lbs/in D256 1.6

 

THERMAL PROPERTIES
  UNITS ASTM TEST  
Coefficient of Linear Thermal Expansion in/in/°F x 10-5 D696 2.6
Heat Deflection Temperature (66psi / 264psi) °F D648  -    306
Max Continuous Service Temperature In Air °F - 480

 

ELECTRICAL PROPERTIES
  UNITS ASTM TEST  
Dielectric Strength V/mil D149 480

 

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

 

OTHER
  UNITS ASTM TEST  
Coefficient of Friction - Dynamic 0.25

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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