G-10/FR4 Fiberglass Epoxy Laminate Rectangular Bar Material Fiberglass Epoxy Laminate Clarity Opaque Color Yellow Thickness 0.375 in Overall Length 4 ft Overall Width 3 in Tensile Strength 38 000 psi Maximum Temperature 280 Degrees F Minimum Temperature 0 Degrees F Impact Strength 14 ft-lb/in Thickness Tolerance +/-0.03 in Standards UL 94 V-0 Corrosion and Chemical Resistance Good Friction Coefficient Not Applicable Density 0.072 lb/cu in Hardness Rockwell M110