PS (Polystyrene Crystal)

Crystal polystyrene is the cheapest thermoplastic available. It has properties to match its price. It is transparent and has good optical properties. It has very low Impact Strength.

Applications: Household Goods, Containers, Furniture, Housings and Packaging.

Advantage

 

Optical Clarity
High gloss
FDA grades available
Low cost
Good dimensional stability
Good rigidity

Disadvantage

 

Flammable, but flame retardant grades available
Poor solvent resistance
Homopolymers are brittle
Subject to stress and environmental cracking

Tensile StrengthFlexural ModulusImpact StrengthMax Temp.Chemical Resistance
5,000-7,500 psi380,000-480,000 psi.35-.45 ft-lb/in notched izod100°-150° FPoor