Go Yen Chemical Goyenchem-GPPS21 General Purpose Polystyrene

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Go Yen Chemical Goyenchem-GPPS21 General Purpose Polystyrene
Categories:	Polymer; Thermoplastic; Polystyrene (PS)
Material Notes:	Characteristics: Low Residual Monomer Good Heat Resistance Mold Dimension Stability Excellent Transparency Easy Processing Extensive Application Application: Bi-Oriented Polystyrene (OPS) for take-out containers Information provided by Go Yen Chemical
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Physical Properties	Metric	English	Comments

Density	1.05 g/cc	0.0379 lb/in³	ASTM D792
Melt Flow	1.9 g/10 min @Load 5.00 kg, Temperature 200 °C	1.9 g/10 min @Load 11.0 lb, Temperature 392 °F	ASTM D1238

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell R	124	124	ASTM D785
Tensile Strength, Yield	53.0 MPa @Thickness 3.17 mm	7690 psi @Thickness 0.125 in	ASTM D638
Elongation at Break	2.0 % @Thickness 3.17 mm	2.0 % @Thickness 0.125 in	ASTM D638
Flexural Yield Strength	83.4 MPa @Load 1.00 kg, Thickness 3.00 mm	12100 psi @Load 2.20 lb, Thickness 0.118 in	120°C/h; ASTM D790
Flexural Modulus	3.82 GPa @Load 1.00 kg, Thickness 3.00 mm	554 ksi @Load 2.20 lb, Thickness 0.118 in	120°C/h; ASTM D790
Izod Impact, Notched	0.147 J/cm	0.275 ft-lb/in	A method, 1/4”×1/2”×5/2”

Thermal Properties	Metric	English	Comments
Deflection Temperature at 1.8 MPa (264 psi)	92.0 °C @Thickness 12.7 mm	198 °F @Thickness 0.500 in	Unannealed; ASTM D648
Vicat Softening Point	107 °C @Load 1.00 kg, Thickness 3.00 mm	225 °F @Load 2.20 lb, Thickness 0.118 in	120°C/h; ASTM D1525

Optical Properties	Metric	English	Comments
Haze	0.50 % @Thickness 2.80 mm	0.50 % @Thickness 0.110 in

Processing Properties	Metric	English	Comments
Processing Temperature	160 - 300 °C	320 - 572 °F	Cylinder
Injection Pressure	49.0 - 137 MPa	7110 - 19900 psi

Descriptive Properties
Composition	200 ppm		Residual SM monomer

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PGOYEN764 / 267072

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