Dow DMDA-8920 NT 7 High Density Polyethylene Resin

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Dow DMDA-8920 NT 7 High Density Polyethylene Resin
Categories:	Polymer; Thermoplastic; Polyethylene (PE); High Density (HDPE)
Material Notes:	DOW DMDA-8920 NT 7 is produced using UNIPOL™ process technology. It is intended for use in a broad range of injection molding applications such as housewares, toys, food containers and pails. Information provided by Dow
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Physical Properties	Metric	English	Comments

Density	0.954 g/cc	0.0345 lb/in³	ASTM D792
ESCR 100% Igepal®	3.0 hour @Temperature 50.0 °C	3.0 hour @Temperature 122 °F	F₅₀; Molded and tested in accordance with ASTM D4976; ASTM D1693
Melt Index of Compound	20 g/10 min @Load 2.16 kg, Temperature 190 °C	20 g/10 min @Load 4.76 lb, Temperature 374 °F	ASTM D1238

Mechanical Properties	Metric	English	Comments
Hardness, Shore D	57	57	Molded and tested in accordance with ASTM D4976; ASTM D2240
Tensile Strength at Break	13.8 MPa	2000 psi	Molded and tested in accordance with ASTM D4976; ASTM D638
Tensile Strength, Yield	28.3 MPa	4100 psi	Molded and tested in accordance with ASTM D4976; ASTM D638
Elongation at Break	250 %	250 %	Molded and tested in accordance with ASTM D4976; ASTM D638
Elongation at Yield	7.0 %	7.0 %	Molded and tested in accordance with ASTM D4976; ASTM D638
Flexural Modulus	1.15 GPa @Strain 2 %	167 ksi @Strain 2 %	Secant; Molded and tested per ASTM D4976; ASTM D790 B
Tensile Impact Strength	42.0 kJ/m²	20.0 ft-lb/in²	Molded and tested in accordance with ASTM D4976; ASTM D1822, Type S

Thermal Properties	Metric	English	Comments
Melting Point	130 °C	266 °F	Dow Method (DSC)
Crystallization Temperature	117 °C	243 °F	Dow Method (DSC)
Deflection Temperature at 0.46 MPa (66 psi)	72.8 °C	163 °F	Molded and tested in accordance with ASTM D4976; ASTM D648
Vicat Softening Point	127 °C	261 °F	ASTM D1525
Brittleness Temperature	<= -76.1 °C	<= -105 °F	Molded and tested in accordance with ASTM D4976; ASTM D746

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