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| Property | HDPE | UHMW-PE | |
| Mechanical Properties | Ultimate Tensile Strength | 26–33 MPa | 21 MPa |
| Yield Strength | 26 MPa | N/A (no clear yield) | |
| Hardness | 60–70 Shore D | 60–65 Shore D | |
| Elongation at Break | 500–1000% | 300–400% | |
| Flexural Strength | 25–30 MPa | 11–14 MPa | |
| Modulus of Elasticity | 0.8 GPa | 0.6–0.8 GPa | |
| Wear Resistance | Good | Excellent | |
| Machinability | Good | Fair to Good | |
| Physical Properties | Density | 0.94–0.96 g/cm³ | 0.93–0.94 g/cm³ |
| Impact Strength | High | Extremely high (no break) | |
| Moisture Absorption | Very low (<0.01%) | Negligible | |
| Friction Coefficient | 0.25–0.3 | 0.10–0.22 | |
| Thermal Properties | Maximum Service Temperature | 80–90 °C | 80–90 °C |
| Thermal Expansion Coefficient | 100–200 ×10⁻⁶/°C | 200 ×10⁻⁶/°C | |
| Thermal Conductivity | 0.42 W/(m·K) | 0.42 W/(m·K) | |
| Electrical Properties | Dielectric Strength | Excellent | Excellent |
| Electrical Resistivity | ~10¹⁵ Ω·cm | ~10¹⁵ Ω·cm | |
| Special Properties | UV Resistance | Poor (unless stabilized) | Poor (unless stabilized) |
| Creep Resistance | Moderate | Excellent | |
| Recyclability | Yes | Yes | |
