K5441 Sheet Stock UHMW Polyethylene Grade Standard Plastic Length 24 in Plastic Width 24 in Plastic Thickness 4 in Black Plastic Clarity Opaque Tensile Strength 4 400 psi Impact Strength 16.0 ft-lb/in Friction Coefficient 0.15 Water Absorption 0.01 Percent Temperature Range -70 Degrees to 180 Degrees F Plastic Density 0.034 lb/cu in Plastic Hardness 70D