... sheet, and plate. The grades of titanium and titanium alloy metal covered by this specification shall have the chemical composition requirements ... and purchaser. This specification covers annealed titanium and titanium alloy strip, sheet, and plate as follows:1 Grade 1 ... , 6 % chromium, 4 % zirconium, 4 % molybdenum),18 Grade 20—Titanium alloy (3 % aluminum, 8 % vanadium, 6 % chromium, 4 % zirconium, 4 ...