KKPC Kuhmo HI 425EH Extrusion Molding HIPS

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KKPC Kuhmo HI 425EH Extrusion Molding HIPS
Categories:	Polymer; Thermoplastic; Polystyrene (PS); Polystyrene, Extrusion Grade
Material Notes:	Key features: ESCR Common Uses: Refrigerator inner liners, door liners, disposable cups, food packaging sheet, wrapping films, trays, washing machines HIPS is a functional resin made by copolymerization of styrene monomer and PBR. It shows excellent balance between impact-resistance and heat-resistance. Data provided by Korea Kumho Petrochemical Co., Ltd.
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Physical Properties	Metric	English	Comments

Density	1.04 g/cc	0.0376 lb/in³	ASTM D792
Water Absorption	0.050 %	0.050 %	24 hr immersion; ASTM D570
Linear Mold Shrinkage	0.0030 - 0.0060 cm/cm	0.0030 - 0.0060 in/in	ASTM D955
Melt Flow	4.8 g/10 min	4.8 g/10 min	ASTM D1238

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell M	55	55	ASTM D785
Tensile Strength, Ultimate	22.6 MPa	3270 psi	ASTM D638
Elongation at Break	70 %	70 %	ASTM D638
Flexural Yield Strength	29.41 MPa	4265 psi	ASTM D790
Flexural Modulus	1.67 GPa	242 ksi	ASTM D790
Izod Impact, Notched	1.04 J/cm @Thickness 3.20 mm	1.95 ft-lb/in @Thickness 0.126 in	ASTM D256

Electrical Properties	Metric	English	Comments
Volume Resistivity	1.00e+16 ohm-cm	1.00e+16 ohm-cm	ASTM D257
Dielectric Strength	17.7 kV/mm	450 kV/in	ASTM D149

Thermal Properties	Metric	English	Comments
Deflection Temperature at 1.8 MPa (264 psi)	76.0 °C	169 °F	unannealed; ASTM D648
Vicat Softening Point	98.0 °C	208 °F	ASTM D1525
Flammability, UL94	HB @Thickness 2.20 mm	HB @Thickness 0.0866 in
	HB @Thickness 1.60 mm	HB @Thickness 0.0630 in
	HB @Thickness 3.20 mm	HB @Thickness 0.126 in

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PKKPCS38 / 48837

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