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Westlake HIPS

High Impact Polystyrene

Supplied by Westlake Plastics Company

The technical datasheet with complete property values for Westlake HIPS is available to members of the Prospector Plastics Database.
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General

Material Status

Commercial: Active

Availability

North America

Features

Good Dimensional Stability

Good Impact Resistance

Machinable

Uses

Containers

Liners

Packaging

Profiles

Forms

Preformed Parts

Physical	Nominal Value	Unit	Test Method
Specific Gravity			ASTM D792
Mechanical	Nominal Value	Unit	Test Method
Tensile Modulus (73°F)		psi	ASTM D638
Tensile Strength			ASTM D638
Yield, 73°F		psi
Break, 73°F		psi
Tensile Elongation (Break, 73°F)		%	ASTM D638
Flexural Modulus (73°F)		psi	ASTM D790
Flexural Strength (Yield, 73°F)		psi	ASTM D790
Impact	Nominal Value	Unit	Test Method
Notched Izod Impact (73°F)		ft·lb/in	ASTM D256
Hardness	Nominal Value	Unit	Test Method
Rockwell Hardness			ASTM D785
L-Scale
R-Scale
Thermal	Nominal Value	Unit	Test Method
Deflection Temperature Under Load			ASTM D648
66 psi, Unannealed		°F
264 psi, Unannealed		°F
Vicat Softening Temperature		°F	ASTM D1525
CLTE - Flow		in/in/°F	ASTM D696
Flammability	Nominal Value	Unit	Test Method
Flame Rating - UL			UL 94
Related Terminology
Product names can be difficult to match. You may have searched any one of these terms to find this product: Westlake HIPS, Westlake , WestlakeHIPS, HIPS, PS, Polystyrene, High Impact, Polystyrene High Impact, PS (HIPS), PS HIPS, Polystyrene, Westlake Plast, PolystyreneHighImpact, PSHIPS
Features
Features may also be described by the following terms: Good Dimensional Stability, Dimensionally Stable, Good Impact Resistance.

Notes

¹Typical properties: these are not to be construed as specifications.