HDPE plastic is the most environmentally stable of all plastics – giving off no harmful fumes into the environment. Manufacturing HDPE plastics requires only a fraction of the energy required to produce steel from iron ore, further contributing to its classification of being Eco-friendly & Multi Use. Tensile strength at yield 25 MPa 527/D638 Elongation at yield 9 % 527 Modulus of elasticity in tension 1000 MPa 527/D638 Modulus of elasticity in flexure 1000-1400 MPa 178/D790 Impact strength No br. kJ/m² 179/D256 Creep rupture strength after 1000hrs with static load 12.5 MPa - Time yield limit for 1% elongation after 1000hrs 3 MPa - Coefficient of friction against hardened and ground steel P= 0.05 N/mm2, v= 0.6m/s 0.29 - - Ball indentation hardness 43 MPa 2039-1 Shore hardness D 64 - 868 Glass transition temperature -95 °C 53736 Crystalline melting point 130 °C 53736 Service temperature (short term) 90 °C - Service temperature (long term) 80 °C - Coefficient of thermal expansion 13-15 10-5K 53483/D696 Specific heat 1.7-2 J/(g*K) - Coefficient of thermal conductivity 0.35-0.43 W/(K*m) - Electrical properties Value Unit DIN/IEC Surface resistivity 1014 Ohm 60093 Dielectric strength 50 kV/mm 60243-1 Other properties Value Unit DIN/EN/ISO/IEC Water absorption @ saturation @ 23°c