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HI 425EP

Technical Datasheet | Supplied by Kumho Petrochemical

HI 425EP by Kumho Petrochemical is a high impact polystyrene (HIPS) grade. Offers high environmental stress crack resistance, good impact resistance, good electrical properties, good water resistance, and good dimensional stability without toxicity. Is suitable for processing by foaming, extrusion and injection molding. HI 425EP is recommended for door liners, and refrigerator inner liner applications. It complies with the US FDA, EU food hygiene standards, RoHS and UL 94 HB flame rating.

HI 425EP Properties

Physical Properties

Value & Unit

Test Condition

Test Method

Melt Mass-Flow Rate (MFR or MFI = Melt Flow Index or MI = Melt Index)

3.2 g/10 min

(200°C, 5 kg)

ASTM D1238

Water Absorption

0.03 %

ASTM D570

Density

1.03 g/cm³

ASTM D792

Injection Molding Properties

Value & Unit

Test Condition

Test Method

Nozzle Temperature

190 - 220 °C

Front Temperature

190 - 210 °C

Middle Temperature

180 - 200 °C

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HI 425EP

HI 425EP Properties

Physical Properties

HI 425EP Processing Guidelines

Injection Molding Properties