Total PSI 8350 (AS) High Impact Polystyrene

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Total PSI 8350 (AS) High Impact Polystyrene
Categories:	Polymer; Thermoplastic; Polystyrene (PS); Polystyrene, Impact Modified
Material Notes:	Total Petrochemicals Polystyrene 8350 (AS) is a very high impact polystyrene for extrusion and injection molding. This grade has improved environmental stress crack resistance in comparison with standard high impact grades. Total Petrochemicals Polystyrene 8350 (AS) retains good mechanical properties at low temperatures making it suitable for frozen packaging. It receives printing well. Suitable applications for Total Petrochemicals Polystyrene 8350 (AS) includes production of packaging intended for products likely to cause stress cracking. Information provided by Total Petrochemicals.
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Physical Properties	Original Value	Comments

Specific Gravity	1.04 g/cc	ASTM D792
Water Absorption	0.060 %	ASTM D570
Linear Mold Shrinkage	0.0040 - 0.0070 cm/cm	ASTM D955
Melt Flow	5.0 g/10 min @Load 5.00 kg, Temperature 200 °C	ASTM D1238
Spiral Flow	45.0 cm @Temperature 220 °C	ASTM D3123

Mechanical Properties	Original Value	Comments
Hardness, Rockwell R	78	ASTM D785
Tensile Strength at Break	24.0 MPa	ASTM D638
Tensile Strength, Yield	26.0 MPa	ASTM D638
Elongation at Break	60 %	ASTM D638
Tensile Modulus	1600 MPa	ASTM D638
Flexural Modulus	1700 MPa	ASTM D790
Izod Impact, Notched (ISO)	14.0 kJ/m²	ASTM D256

Electrical Properties	Original Value	Comments
Surface Resistance	>= 1.00e+13 ohm	ISO IEC 93
Dielectric Strength	150 kV/mm	ASTM D149

Thermal Properties	Original Value	Comments
CTE, linear	91.0 µm/m-°C	ASTM D696
Vicat Softening Point	96.0 °C @Load 1.02 kg	50°C per hour; ASTM D1525
Heat Distortion Temperature	176 °F	ASTM D648

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