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DOW HDPE DMDA-8920 Resin is a narrow molecular weight distribution high density copolymer designed to offer an excellent balance of toughness, environmental stress cracking resistance, and processability. The resin is suitable for injection-molded medical devices such as IV kit components and respiratory care. This product can also be used in pharmaceutical packaging including caps and closures.

Physical Nominal Value (English) Nominal Value (SI) Test Method
Density 0.954 g/cm³ 0.954 g/cm³ ASTM D792
Base Density 1 0.954 g/cm³ 0.954 g/cm³ Dow Method
Melt Index (190°C/2.16 kg) 20 g/10 min 20 g/10 min ASTM D1238
Environmental Stress-Cracking Resistance (ESCR)         ASTM D1693
122°F (50°C), 100% Igepal, F50 3.00 hr 3.00 hr  
Mechanical Nominal Value (English) Nominal Value (SI) Test Method
Tensile Strength         ASTM D638
Yield 4100 psi 28.3 MPa  
Break 2000 psi 13.8 MPa  
Tensile Elongation         ASTM D638
Yield 7.0 % 7.0 %  
Break 250 % 250 %  
Flexural Modulus – 2% Secant 167000 psi 1150 MPa ASTM D790B
Impact Nominal Value (English) Nominal Value (SI) Test Method
Tensile Impact Strength 2 20.0 ft·lb/in² 42.0 kJ/m² ASTM D1822
Hardness Nominal Value (English) Nominal Value (SI) Test Method
Durometer Hardness (Shore D) 57   57   ASTM D2240
Thermal Nominal Value (English) Nominal Value (SI) Test Method
Deflection Temperature Under Load         ASTM D648
66 psi (0.45 MPa), Unannealed 163 °F 72.8 °C  
Brittleness Temperature < -105 °F < -76.1 °C ASTM D746
Vicat Softening Temperature 261 °F 127 °C ASTM D1525
Melting Temperature (DSC) 266 °F 130 °C Dow Method
Peak Crystallization Temperature (DSC) 243 °F 117 °C Dow Method

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