KKPC Kuhmo HI 425EP Extrusion Molding HIPS

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KKPC Kuhmo HI 425EP Extrusion Molding HIPS
Categories:	Polymer; Thermoplastic; Polystyrene (PS); Polystyrene, Extrusion Grade
Material Notes:	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	5.5 g/10 min	5.5 g/10 min	ASTM D1238

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell M	40	40	ASTM D785
Tensile Strength, Ultimate	21.6 MPa	3130 psi	ASTM D638
Elongation at Break	60 %	60 %	ASTM D638
Flexural Yield Strength	29.76 MPa	4316 psi	ASTM D790
Flexural Modulus	1.615 GPa	234.3 ksi	ASTM D790
Izod Impact, Notched	1.28 J/cm @Thickness 3.20 mm	2.40 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)	75.0 °C	167 °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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PKKPCS40 / 48838

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