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HI 425

Technical Datasheet | Supplied by Kumho Petrochemical

HI 425 by Kumho Petrochemical is a general-purpose, high-impact polystyrene (HIPS) grade. Offers high impact strength, good electrical properties, good water resistance and good dimensional stability without toxicity. It is suitable for processing by injection molding. HI 425 is recommended for office equipment, electronic home appliances, toys, kitchen utensils, leisure goods and miscellaneous goods. It complies with the US FDA, EU food hygiene standards, RoHS and UL 94 HB flame rating.

HI 425 Properties

Mechanical Properties

Value & Unit

Test Condition

Test Method

Tensile Strength

260 kg/cm²

ASTM D638

Tensile Elongation

40 %

ASTM D638

Flexural Strength

300 kg/cm²

ASTM D790

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 425

HI 425 Properties

Mechanical Properties

HI 425 Processing Guidelines

Injection Molding Properties