1.1.1 Grade C-2—UNS R52550. Unalloyed titanium,

1.1.2 Grade C-3—UNS R52550. Unalloyed titanium,

1.1.3 Grade C-5—UNS R56400. Titanium alloy (6 % aluminum, 4 % vanadium),

1.1.4 Grade C-7—UNS R52700. Unalloyed titanium plus 0.12 to 0.25 % palladium,

1.1.5 Grade C-8—UNS R52700. Unalloyed titanium plus 0.12 to 0.25 % palladium,

1.1.6 Grade C-9—UNS R56320. Titanium alloy (3 % aluminum, 2.5 % vanadium),

1.1.7 Grade C-12—UNS R53400. Titanium alloy (0.3 % molybdenum, 0.8 % nickel),

1.1.8 Grade C-16—UNS R52402. Unalloyed titanium plus 0.04 to 0.08 % palladium,

1.1.9 Grade C-17—UNS R52252. Unalloyed titanium plus 0.04 to 0.08 % palladium, and

1.1.10 Grade C-38—UNS R54250. Titanium alloy (4 % aluminum, 2.5 % vanadium, 1.5 % iron).

1.2.1 Users are advised to use the specification as a basis for obtaining castings which will meet minimum acceptance requirements established and revised by consensus of the members of the committee.

1.2.2 User requirements considered more stringent may be met by the addition to the purchase order of one or more supplementary requirements, which may include, but are not limited to, those listed in Sections S1 through S8.