Polymer Type Thermoplastic Advantages Good low temperature impact resistance. Excellent chemical resistance. Disadvantages Susceptible to stress cracking. Has lower stiffness compared to Polypropylene. High mould shrinkage and poor UV resistance. Typical Properties Property Value Density (g/cm3) 0.96 Surface Hardness SD68 Tensile Strength (MPa) 32 Flexural Modulus (GPa) 1.25 Notched Izod (kJ/m) 0.15 Linear Expansion (/°C x 10-5) 12 Elongation at Break (%) 150 Strain at Yield (%) 15 Max. Operating Temp. (°C) 55 Water Absorption (%) 0.02 Oxygen Index (%) 17 Flammability UL94 HB Volume Resistivity (log ohm.cm) 17 Dielectric Strength (MV/m) 22 Dissipation Factor 1kHz 0.0005 Dielectric Constant 1kHz 2.3 HDT @ 0.45 MPa (°C) 75 HDT @ 1.80 MPa (°C) 46 Material. Drying hrs @ (°C) NA Melting Temp. Range (°C) 220 - 310 Mould Shrinkage (%) 3 Mould Temp. Range (°C) 30 - 70
Applications Pipe and pipefittings for water transportation. Toys, bowls, buckets, milk bottles, crates, tanks, containers. Film for packaging. Blown bottles for food. MDPE (Medium Density Polyethylene) is used for gas pipes and fittings.