Braskem America H521

Braskem H521 is a polypropylene homopolymer designed for injection molding and general applications. It provides low water carryover. Other applications and suggested uses include tape, slit-film fibers, containers, closures and housewares.

Polymer NamePolypropylene Homopolymer (HPP)

Processing MethodsCompounding, Extrusion, Fibers Extrusion, Injection Molding

Melt Flow Index3.6 - 3.6 g/10 min

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Identification & Functionality

Plastics & Elastomers Functions

Features & Benefits

Key Attributes
  • General purpose
  • Low water carryover

Applications & Uses

Plastics & Elastomers Processing Methods


Typical Properties
ValueUnitsTest Method / Conditions
Elongation at Yield (2 in/min, 50 mm/min)10%ASTM D-638
Elongation of Fibers (3.3 draw ratio, 1,250 m/min roll speed, 225°C spin temperature, D1000/68)36%ASTM D-2256
Flexural Modulus (0.05 in/min, 1.3 mm/min, 1% secant)1,655MPaASTM D-790
Rockwell Hardness103RASTM D-785
Tenacity of Fibers (3.3 Draw Ratio 1250 M/Min Roll Speed 225°C Spin Temperature D1000/68)4.5g/denierASTM D-2256
Tensile Strength at Yield (2 in/min, 50 mm/min)37MPaASTM D-638
Notched Izod Impact Strength (23°C)37J/mASTM D-256
Control Properties
ValueUnitsTest Method / Conditions
Nominal Melt Flow (230°C/2.16kg)3.6g/10 minASTM D-1238