LG Chemical 20HRI GPPS

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LG Chemical 20HRI GPPS (discontinued **)
Categories:	Polymer; Thermoplastic; Polystyrene (PS); Polystyrene, Molded, Unreinforced
Material Notes:	Heat resistance, Superior transparency and processability, good appearance, non-toxicity (Conforming to FDA CFR 177.1640), Excellent electrical properties, Heat resistance and chemical resistance, Superior extrusion processing suitable for OPS, PSP and synthetic wood, Applications include radio housing, name plates for electrical equipment, and cosmetic cases
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Physical Properties	Original Value	Comments

Density	1.05 g/cc	ASTM D792
Linear Mold Shrinkage	0.0040 - 0.0080 cm/cm	ASTM D955
Melt Flow	5.5 g/10 min @Load 5.00 kg, Temperature 200 °C	ASTM D1238

Mechanical Properties	Original Value	Comments
Hardness, Rockwell R	120	ASTM D785
Tensile Strength, Yield	46.2 MPa	50 mm/min; ASTM D638
Elongation at Break	4.0 %	50 mm/min; ASTM D638
Flexural Yield Strength	86.4 MPa	15 mm/min; ASTM D790
Flexural Modulus	3.30 GPa	15 mm/min; ASTM D790

Electrical Properties	Original Value	Comments
Arc Resistance	120 - 180 sec	UL Rating PLC 5 (120-180 sec)
Comparative Tracking Index	400 - 600 V	UL Rating PLC 1 (400-600 volts)
Hot Wire Ignition, HWI	15 - 30 sec	UL Rating PLC 3 (15-30 sec)
High Amp Arc Ignition, HAI	>= 120 arcs	UL Rating PLC 0 (>120 arcs)
High Voltage Arc-Tracking Rate, HVTR	10.0 - 25.4 mm/min	UL Rating PLC 1 (10-25.4 mm/min)

Thermal Properties	Original Value	Comments
Deflection Temperature at 1.8 MPa (264 psi)	85.0 °C @Thickness 12.7 mm	Unannealed; ASTM D648
Vicat Softening Point	103 °C	1000 g; ASTM D1525
Flammability, UL94	HB @Thickness 1.59 mm
	HB @Thickness 3.17 mm
Flame Spread	27.0 mm/min @Thickness 3.17 mm	FH3

Compliance Properties	Original Value	Comments
FDA	Yes	See notes for details.

**
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