Table 11.

Titanium alloys grouped by their mechanical structure, with examples.

Alloy	Example
Alpha (α) alloys	Commercially pure Ti—ASTM Grades 1, 2, 3, and 4 Ti/Pd alloys—ASTM Grades 7 and 11
Alpha (α) + compound	Ti-2.5%Cu—IMI 230
Near Alpha alloys	Ti-8%Al-1%Mo-1%V Ti-6%Al-5%Zr-0.5%Mo-0.2%Si—IMI 685 Ti-6%Al-2%Sn-4%Zr-2%Mo-0.08%Si Ti-5.5%Al-3.5%Sn-3%Zr-1%Nb-0.3%Mo-0.3%Si—IMI 829 Ti-5.8%Al-4%Sn-3.5%Zr-0.7%Nb-0.5%Mo-0.3%Si—IMI 834 Ti-6%Al-3%Sn-4%Zr-0.5%Mo-0.5%Si—Ti 1100
Alpha-Beta (α—β) alloys	Ti-6%Al-4%V Ti-4%Al-4%Mo-2%Sn-0.5%Si Ti-4%Al-4%Mo-4%Sn-0.5%Si—IMI 551 Ti-6%Al-6%V-2%Sn Ti-6%Al-2%Sn-4%Zr-%Mo
Metastable Beta (β) alloys	Ti-3%Al-8%V-6%Cr-4%Zr-4%Mo—Beta C Ti-15%Mo-3%Nb-3%Al-0.2%Si—Timetal 21 S Ti-15%V-3%Cr-3%Sn-3%Al