XX Fiberglass Epoxy Laminate Sheet Material Fiberglass Epoxy Laminate Color Black Clarity Opaque Overall Length 4 ft Tensile Strength 15 000 psi Maximum Temperature 250 Degrees F Minimum Temperature 0 Degrees F Density 0.049 lb/cu in Standards UL 94 HB Impact Strength 0.6 ft-lb/in Hardness Rating Extra Hard Friction Coefficient Not Applicable Corrosion and Chemical Resistance Fair Friction Rating Not Rated Grade XX Hardness Rockwell M110 Impact Strength Rating Poor