... has a very high tensile strength,tear strength,elongation at break is very large,wide application HDPE Impermeable membrane ... /mm≥43≥573Yield strength, N/mm≥25≥304Elongation at break, %≥700≥7005Elongation at yield, %≥13≥136Angle tear strength, N≥210≥ ... stress cracking resistance F20, h≥1500≥150010Oxidation induction time at 200.C min≥100≥100min11Water vapor permeability coefficient g·cm/(cm2 ...