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Polystyrene (PS) is a thermoplastic designed for applications requiring excellent electrical and mechanical properties together with good processability. Polystyrenes have well-balanced physical properties and are generally transparent, but available in various colors.

Unfilled polystyrene has a sparkle appearance and is often referred to as crystal PS or general purpose polystyrene (GPPS). Because of the brittleness of crystal polystyrene, styrene is frequently polymerized in the presence of dissolved polybutadiene rubber to improve the strength of the polymer.

HIPS is often specified for low strength structural applications when impact resistance, machinability, and low cost are required. It is frequently used machining pre-production prototypes since it has excellent dimensional stability and is easy to fabricate, paint and glue. Natural (translucent white) HIPS is FDA compliant for use in food processing applications.

Brand Names

  • Polyflex
  • Polypenco Q200.5
  • Rexolite®
  • Styraclear®
  • Spartech®
  • Trycite™
  • Lacqrene®
  • Primex
  • Polifil®
  • Royalstat® R675

Emco Industrial Plastics doesn’t claim to represent all of the manufacturers or trade name products listed. This list is intended as a guide of typical materials available for purchase from Emco Industrial Plastics, Inc. For additional information, contact an Emco Industrial Plastics representative with the form below.

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At a Glance

Generic Name
Polystyrene, High Impact (HIPS) Static

Available In
Sheet, Rod, Tube

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Technical Information

Stock Products Properties

Stock Products

Sheet 1/8″ – 6″ TH Std. sheet sizes up to 60″ x 120″; CTS White
Rod 1/4″ – 2″ DIA Std. foot lengths; CTS White
Tube 1/2″ – 4″ OD; various ID Std. foot lengths; CTS White
Other Hollow spheres

Give us your cut-to-size dimensions. We will precision-cut these plastics to your exact size. Additional sizes and colors available upon request.


Physical PropertiesUnitsASTMResults
Density lb/in³ D792 0.043
Water Absorption, 24 hrs % D570 0.01
Mechanical PropertiesUnitsASTMResults
Tensile Strength psi D638 4000
Tensile Modulus psi D638 260000
Tensile Elongation @Break % D638 55
Flexural Strength psi D790 8700
Flexural Modulus psi 400000 280000
Compressive Strength psi D695 7500
Hardness, Rockwell R D785 56L
IZOD Impact Strength Notched ft-lb/in D256 2
Thermal PropertiesUnitsASTMResults
Coefficient of Linear Thermal Expansion (x 10⁻⁵in./in./°F) D256 4.2
Heat Deflection Temp at 264 psi °F 195
Melting Temperature °F D3418 214
Max Operating Temp °F D648 140
Flammability Rating UL94 H – B
Electrical PropertiesUnitsASTMResults
Dielectric Strength @1/8″ th. V/mil D149 45
Dissipation Factor @ 1 MHz D150 2.7
Volume Resistivity, 50% RH ohm-cm D257 >10¹⁶

NOTE: The property values presented above are typical values intended for reference and comparison purposes only. They should NOT be used as a basis for design specifications or quality control. Contact us for manufacturers’ complete material property datasheets. All values at 73°F (23°C) unless otherwise noted.

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