High Impact Polystyrene Properties

Physical, mechanical, thermal, electrical, and optical properties of high impact polystyrene

TYPICAL PROPERTIES
  UNITS ASTM TEST  
Tensile Strength psi D638 3,500
Flexural Modulus of Elasticity psi D790 310,000
Izod Impact (notched) ft-lbs/in of notch D256 2.8
Heat Deflection Temperature (66psi / 264psi) °F D648  -    196
Water Absorption
(Immersion 24 hours)
% D570 -

 

PHYSICAL PROPERTIES
  UNITS ASTM TEST  
Specific Gravity - D792 1.04
Water Absorption
(Immersion 24 hours)
% D570 -

 

MECHANICAL PROPERTIES
  UNITS ASTM TEST  
Tensile Strength psi D638 3,500
Tensile Modulus of Elasticity psi D638 270,000
Tensile Elongation % D638 52
Flexural Strength psi D790 7,000
Flexural Modulus of Elasticity psi D790 310,000
Compressive Strength psi D695 -
Hardness scale as noted D785, D2240 M75
Izod Impact ft-lbs/in D256 2.8

 

THERMAL PROPERTIES
  UNITS ASTM TEST  
Coefficient of Linear Thermal Expansion in/in/°F x 10-5 D696 4.5
Heat Deflection Temperature (66psi / 264psi) °F D648  -    196
Max Continuous Service Temperature In Air °F - -

 

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

 

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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