Technical datasheet

SUPOL® HB721

Supplied byHDC HYUNDAI EP- Last Updated on Oct 23, 2025

SUPOL® HB721 by HDC HYUNDAI EP is a high-polish, anti-static polypropylene (PP) grade by Hyundai EP. Exhibits high thermal & light resistance, high workability and measurable reliability. SUPOL® HB721 by HDC HYUNDAI EP is used in electrical and electronic industries for rice cooker covers, water purifiers, electric fan covers and decoction machines. Complies with RoHS and UL 94 HB flame rating.
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Benefits

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Compliance

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SUPOL® HB721 properties

Flammability properties

PropertiesValue & unitTest conditionTest method
Flame Rating, UL 940.0 Visible After LoginVisible After LoginVisible After Login

Mechanical properties

PropertiesValue & unitTest conditionTest method
Elongation at Break0.0 Visible After LoginVisible After LoginVisible After Login
Flexural Modulus0.0 Visible After LoginVisible After LoginVisible After Login
Flexural Strength0.0 Visible After LoginVisible After LoginVisible After Login
Hardness, Rockwell R0.0 Visible After LoginVisible After LoginVisible After Login
Impact Strength, Izod0.0 Visible After LoginVisible After LoginVisible After Login

Optical properties

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Gloss0.0 Visible After LoginVisible After LoginVisible After Login

Other properties

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Tensile Strength at Yield0.0 Visible After LoginVisible After LoginVisible After Login

Physical properties

PropertiesValue & unitTest conditionTest method
Density0.0 Visible After LoginVisible After LoginVisible After Login
Linear Mold Shrinkage0.0 Visible After LoginVisible After LoginVisible After Login
Melt Mass-Flow Rate (MFR or MFI = Melt Flow Index or MI = Melt Index)0.0 Visible After LoginVisible After LoginVisible After Login

Thermal properties

PropertiesValue & unitTest conditionTest method
Heat Deflection Temperature (HDT), Annealed0.0 Visible After LoginVisible After LoginVisible After Login

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