PS
(Polystyrene Crystal)
Crystal polystyrene (PS) is the cheapest thermoplastic available. It has properties to match its price.
PS is transparent and has good optical properties. It has very low Impact Strength.
Properties at a Glance
| Max Temp. | Chemical Resistance | Tensile Strength | Flexural Modulus | Impact Strength |
| 100°-150° F | Poor | 5，000-7,500 psi | 380,000 -480,000 psi | 35-.45 ft-lb/in notched izod |
Pros and Cons
Pros
Optical Clarity
High gloss
FDA grades available
Low cost
Good dimensional stability
Good rigidity
Cons
Flammable, but flame retardant grades available
Poor solvent resistance
Homopolymers are brittle
Subject to stress and environmental cracking
Brand Names & Data Sheet
Certene
Hival
Polystyrol
Styron