G-10/FR4 Fiberglass Epoxy Laminate Rectangular Bar Material Fiberglass Epoxy Laminate Clarity Opaque Color Yellow Thickness 0.75 in Overall Length 24 in Overall Width 4 in Tensile Strength 38 000 psi Maximum Temperature 280 Degrees F Minimum Temperature 0 Degrees F Impact Strength 14 ft-lb/in Thickness Tolerance +0.076/-0.041 in Standards UL 94 V-0 Corrosion and Chemical Resistance Good Friction Coefficient Not Applicable Density 0.072 lb/cu in Hardness Rockwell M110