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HI 425E

Technical Datasheet | Supplied by Kumho Petrochemical

HI 425E by Kumho Petrochemical is a high impact polystyrene (HIPS) grade. Offers high strength, high impact strength, good electrical properties, good water resistance, and good dimensional stability without toxicity. Is suitable for processing by extrusion and injection molding. HI 425E is recommended for disposable cups, food packing sheet, wrapping films, trays, and washing machines. It complies with the US FDA, EU food hygiene standards, RoHS and UL 94 HB flame rating.

HI 425E Properties

Physical Properties

Value & Unit

Test Condition

Test Method

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

4.5 g/10 min

(200°C, 5 kg)

ASTM D1238

Linear Mold Shrinkage

0.3 - 0.6 %

ASTM D955

Water Absorption

0.03 %

ASTM D570

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 425E

HI 425E Properties

Physical Properties

HI 425E Processing Guidelines

Injection Molding Properties