High Impact Polystyrene (HIS) sheet is a tough, low cost, easy to thermoform, fabricate, and machine plastic material. It has high impact strength and is easy to glue, paint, and print. Typical uses for HIS are POP displays, indoor signs, and check sockets for orthotics and prosthetics.
High Impact Polystyrene is available in a variety of grades including FDA compliant and Orfitrans™ Stiff for orthotics and prosthetics. Please ask your Curbell Plastics representative for more specific information about an individual brand.
Get a quote or shop High Impact Polystyrene.
For a glossary of terms, see our Plastic Properties Descriptions.
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.
Still Not Sure if You Need High Impact Polystyrene? Research High Impact Polystyrene or Ask a Plastics Expert.