Commodity Plastics
PS Crystal Injection Molding — General Purpose Polystyrene (Crystal) for Injection Molding
GPPS is a transparent, rigid, and brittle thermoplastic with good dimensional stability and ease of processing. It is cost-effective but has limited impact strength and poor UV resistance. Used for clear disposable items, packaging, and electronic housings.
GPPSPSStyronLustrex
Manufacturers
3
Grades
3
Applications
4
Equivalents
2
Physical Properties
- Density
- 1.04-1.06 g/cm³
- Water Absorption (24h)
- 0.03-0.1 %
- Transparency
- Excellent
- Shrinkage
- 0.4-0.8 %
Mechanical Properties
- Young's Modulus
- 3.0-3.5 GPa
- Tensile Strength
- 45-60 MPa
- Elongation at Break
- 2-5 %
- Impact Strength (Izod)
- 10-20 J/m
Thermal Properties
- Glass Transition Temperature
- 90-100 °C
- Melting Point
- N/A (amorphous)
- Continuous Service Temperature
- 60-70 °C
- Heat Deflection Temperature
- 70-80 °C
Electrical Properties
- Dielectric Constant
- 2.5-2.6
- Volume Resistivity
- 10¹⁵-10¹⁶ Ω⋅cm
- Dielectric Strength
- 15-25 kV/mm
Chemical Resistance
- Acids
- Good resistance
- Bases
- Good resistance
- Solvents
- Attacked by aromatic hydrocarbons, ketones, and esters
- UV Resistance
- Poor
Sustainability
- Recyclability
- Recyclable
- Recycling Code
- 6 (PS)
- Carbon Footprint
- Moderate
Manufacturing compatibility
Injection moldingExtrusionThermoforming
Applications
Disposable cutlery
CD cases
Food packaging
Housings
Available grades
PS 1150PS 1540PS 735D