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	Metric	English	Comments

Density	1.05 g/cc	0.0379 lb/in³	ASTM D792
Linear Mold Shrinkage	0.0040 - 0.0080 cm/cm	0.0040 - 0.0080 in/in	ASTM D955
Melt Flow	5.5 g/10 min @Load 5.00 kg, Temperature 200 °C	5.5 g/10 min @Load 11.0 lb, Temperature 392 °F	ASTM D1238

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell R	120	120	ASTM D785
Tensile Strength, Yield	46.2 MPa	6700 psi	50 mm/min; ASTM D638
Elongation at Break	4.0 %	4.0 %	50 mm/min; ASTM D638
Flexural Yield Strength	86.4 MPa	12500 psi	15 mm/min; ASTM D790
Flexural Modulus	3.30 GPa	479 ksi	15 mm/min; ASTM D790

Electrical Properties	Metric	English	Comments
Arc Resistance	120 - 180 sec	120 - 180 sec	UL Rating PLC 5 (120-180 sec)
Comparative Tracking Index	400 - 600 V	400 - 600 V	UL Rating PLC 1 (400-600 volts)
Hot Wire Ignition, HWI	15 - 30 sec	15 - 30 sec	UL Rating PLC 3 (15-30 sec)
High Amp Arc Ignition, HAI	>= 120 arcs	>= 120 arcs	UL Rating PLC 0 (>120 arcs)
High Voltage Arc-Tracking Rate, HVTR	10.0 - 25.4 mm/min	0.394 - 1.00 in/min	UL Rating PLC 1 (10-25.4 mm/min)

Thermal Properties	Metric	English	Comments
Deflection Temperature at 1.8 MPa (264 psi)	85.0 °C @Thickness 12.7 mm	185 °F @Thickness 0.500 in	Unannealed; ASTM D648
Vicat Softening Point	103 °C	217 °F	1000 g; ASTM D1525
Flammability, UL94	HB @Thickness 1.59 mm	HB @Thickness 0.0625 in
	HB @Thickness 3.17 mm	HB @Thickness 0.125 in
Flame Spread	27.0 mm/min @Thickness 3.17 mm	1.06 in/min @Thickness 0.125 in	FH3

Compliance Properties	Metric	English	Comments
FDA	Yes	Yes	See notes for details.

**
Materials flagged as discontinued () are no longer part of the manufacturer’s standard product line according to our latest information. These materials may be available by special order, in distribution inventory, or reinstated as an active product. Data sheets from materials that are no longer available remain in MatWeb to assist users in finding replacement materials.

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