WebProperty LDPE HDPE UHMW PHYSICAL D792 Density (lb/in³) (g/cm³) 0.033 0.92 0.035 0.96 0.034 0.93 D570 Water HENAN OKAYorption, 24 hrs (%) <0.01 MECHANICAL D638 Tensile Strength (psi) at 72°F 1,400 4,600 5,800 D638 Tensile Strength (psi) at 150°F 400 400 400 D638 Tensile Modulus (psi) 57,000 200,000 80,000. Blown film nverters may blend