Aluminum Foil Roll, Material Aluminum, Material Grade 1100, Overall Width 18 in, Roll Length 50 ft, Thickness 0.003 in, Length Type Roll, Mechanical Finish Mill, Temper Full Hard, Heat Treatment No Heat Treatment, Heat Treatable No, Tensile Strength 27,000 psi, Yield Strength 24,000 psi, Brinell Hardness Not Applicable, Fabrication Hot Rolled, Rockwell Hardness Not Applicable, Appearance Mill This hard-tempered aluminum foil helps to provide corrosion resistance and is easily welded and brazed, with thermal and electrical conductivity. It is 100% recyclable and is not heat treatable.