Braskem GP5550 HDPE High Density Extrusion Polyethylene

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Braskem GP5550 HDPE High Density Extrusion Polyethylene (discontinued **)
Categories:	Polymer; Thermoplastic; Polyethylene (PE); High Density (HDPE); High Density Polyethylene (HDPE), Extruded
Material Notes:	GP5550 is a high-density polyethylene with high molar mass. It is produced with bimodal technology and shows excellent mechanical properties and high resistance to stress cracking. Its applications include: straight pipes for mining, subducts for energy and telecom, jacketing of optic fibers and metallic cables, geomembranes, and blends for irrigation pipes.
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Physical Properties	Metric	English	Comments

Density	0.951 g/cc	0.0344 lb/in³	ASTM-D792
ESCR 100% Igepal®	>= 1000 hour @Thickness 2.00 mm, Temperature 50.0 °C	>= 1000 hour @Thickness 0.0787 in, Temperature 122 °F	0.3 mm notched-plaques; ASTM-D1693
Melt Flow	0.23 g/10 min @Load 5.00 kg, Temperature 190 °C	0.23 g/10 min @Load 11.0 lb, Temperature 374 °F	ASTM-D1238

Mechanical Properties	Metric	English	Comments
Hardness, Shore D	64	64	ASTM-D2240
Tensile Strength at Break	38.0 MPa	5510 psi	ASTM-D638
Tensile Strength, Yield	25.0 MPa	3630 psi	ASTM-D638
Elongation at Break	780 %	780 %	ASTM-D882
Elongation at Yield	8.4 %	8.4 %	ASTM-D882
Flexural Modulus, 1% Secant	1150 MPa	167000 psi	ASTM-D790
Izod Impact, Notched	3.40 J/cm	6.37 ft-lb/in	ASTM-D256

Thermal Properties	Metric	English	Comments
Deflection Temperature at 0.46 MPa (66 psi)	71.0 °C	160 °F	ASTM-D648
Vicat Softening Point	125 °C @Load 1.02 kg	257 °F @Load 2.25 lb	ASTM-D1525

**
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PBRAS803 / 106649

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