It is also the most affordable and used in boat and ship building, tanks and cooling.25 Structural Bolt, Titanium, 45 mm L Grade 2 titanium is unalloyed and the most common of all the grades of titanium.
5/16"-18 Socket Head Cap Screw, Plain Titanium, 3/4 in Length Grade 5 titanium is a common aerospace alloy that has been used in commercial aircraft for decades.