DOW™ DMDA-8920 HDPE
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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