... Bolt, Titanium Powder This specification covers annealed titanium and titanium alloy strip, sheet, and plate as follows:1 Grade 1—Unalloyed ... , 6 % chromium, 4 % zirconium, 4 % molybdenum),18 Grade 20—Titanium alloy (3 % aluminum, 8 % vanadium, 6 % chromium, 4 % zirconium, 4 % ... 2.7 % niobium, 0.25 % silicon),20 Grade 23—Titanium alloy (6 % aluminum, 4 % vanadium with extra low interstitial elements, ...