This specification covers 39 grades of annealed titanium and titanium alloy forgings as Grade F-1, Grade F-2, Grade F-2H, Grade F-3, Grade F-4, Grade F-5, Grade F-6, Grade F-7, Grade F-7H, Grade F-9, Grade F-11, Grade F-12, Grade F-13, Grade F-14, Grade F-15, Grade F-16, Grade F-16H, Grade F-17, Grade F-18, Grade F-19 Grade F-20, Grade F-21, Grade F-23, Grade F-24, Grade F-25, Grade F-26, Grade F-26H, Grade F-27, Grade F-28, Grade F-29, Grade F-30, Grade F-31, Grade F-32, Grade F-33, Grade F-34, Grade F-35, Grade F-36, Grade F-37, and Grade F-38. The grades of titanium and titanium alloy metal covered by this specification shall conform to the requirements as to chemical composition prescribed. Forgings supplied under this specification shall conform to the requirements as to mechanical properties specified, as applicable, such as tensile strength, yield strength, and elongation. Nondestructive test requirements such as ultrasonic test, X-ray, or surface inspection shall be specified by the purchaser, if required.

1.1 This specification² covers 39 grades of annealed titanium and titanium alloy forgings as follows:

1.1.1 Grade F-1—UNS R50250. Unalloyed titanium,

1.1.2 Grade F-2—UNS R50400. Unalloyed titanium,

1.1.2.1 Grade F-2H—UNS R50400. Unalloyed titanium (Grade 2 with 58 ksi (400 MPa) minimum UTS),

1.1.3 Grade F-3—UNS R50550. Unalloyed titanium,

1.1.4 Grade F-4—UNS R50700. Unalloyed titanium,

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

1.1.6 Grade F-6—UNS R54520. Titanium alloy (5 % aluminum, 2.5 % tin),

1.1.7 Grade F-7—UNS R52400. Unalloyed titanium plus 0.12 to 0.25 % palladium,

1.1.7.1 Grade F-7H—UNS R52400. Unalloyed titanium plus 0.12 to 0.25 % palladium (Grade 7 with 58 ksi (400 MPa) minimum UTS),

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

1.1.9 Grade F-11—UNS R52250. Unalloyed titanium plus 0.12 to 0.25 % palladium,

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

1.1.11 Grade F-13—UNS R53413. Titanium alloy (0.5 % nickel, 0.05 % ruthenium),

1.1.12 Grade F-14—UNS R53414. Titanium alloy (0.5 % nickel, 0.05 % ruthenium),

1.1.13 Grade F-15—UNS R53415. Titanium alloy (0.5 % nickel, 0.05 % ruthenium),

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

1.1.14.1 Grade F-16H—UNS R52402. Unalloyed titanium plus 0.04 to 0.08 % palladium (Grade 16 with 58 ksi (400 MPa) minimum UTS),

1.1.15 Grade F-17—UNS R52252. Unalloyed titanium plus 0.04 to 0.08 % palladium,

1.1.16 Grade F-18—UNS R56322. Titanium alloy (3 % aluminum, 2.5 % vanadium) plus 0.04 % to 0.08 % palladium,

1.1.17 Grade F-19—UNS R58640. Titanium alloy (3 % aluminum, 8 % vanadium, 6 % chromium, 4 % zirconium, 4 % molybdenum),

1.1.18 Grade F-20—UNS R58645. Titanium alloy (3 % aluminum, 8 % vanadium, 6 % chromium, 4 % zirconium, 4 % molybdenum) plus 0.04 to 0.08 % palladium,

1.1.19 Grade F-21—UNS R58210. Titanium alloy (3 % aluminum, 2.7 % niobium, 15 % molybdenum, 0.25 % silicon),

1.1.20 Grade F-23—UNS R56407. Titanium alloy (6 % aluminum, 4 % vanadium, extra low interstitials, ELI),

1.1.21 Grade F-24—UNS R56405. Titanium alloy (6 % aluminum, 4 % vanadium) plus 0.04 to 0.08 % palladium,

1.1.22 Grade F-25—UNS R56403. Titanium alloy (6 % aluminum, 4 % vanadium) plus 0.3 to 0.8 % nickel and 0.04 to 0.08 % palladium,

1.1.23 Grade F-26—UNS R52404. Unalloyed titanium plus 0.08 to 0.14 % ruthenium,

1.1.23.1 Grade F-26H—UNS R52404. Unalloyed titanium plus 0.08 to 0.14 % ruthenium (Grade 26 with 58 ksi (400 MPa) minimum UTS),

1.1.24 Grade F-27—UNS R52254. Unalloyed titanium plus 0.08 to 0.14 % ruthenium,

1.1.25 Grade F-28—UNS R56323. Titanium alloy (3 % aluminum, 2.5 % vanadium plus 0.08 to 0.14 % ruthenium),

1.1.26 Grade F-29—UNS R56404. Titanium alloy (6 % aluminum, 4 % vanadium, extra low interstitial, ELI plus 0.08 to 0.14 % ruthenium),

1.1.27 Grade F-30—UNS R53530. Titanium alloy (0.3 % cobalt, 0.05 % palladium),

1.1.28 Grade F-31—UNS R53532. Titanium alloy (0.3 % cobalt, 0.05 % palladium),

1.1.29 Grade F-32—UNS R55111. Titanium alloy (5 % aluminum, 1 % vanadium, 1 % tin, 1 % zirconium, 0.8 % molybdenum),

1.1.30 Grade F-33—UNS R53442. Titanium alloy (0.4 % nickel, 0.015 % palladium, 0.025 % ruthenium, 0.15 % chromium),

1.1.31 Grade F-34—UNS R53445. Titanium alloy (0.4 % nickel, 0.015 % palladium, 0.025 % ruthenium, 0.15 % chromium),

1.1.32 Grade F-35—UNS R56340. Titanium alloy (4.5 % aluminum, 2 % molybdenum, 1.6 % vanadium, 0.5 % iron, 0.3 % silicon),

1.1.33 Grade F-36—UNS R58450. Titanium alloy (45 % niobium),

1.1.34 Grade F-37—UNS R52815. Titanium alloy (1.5 % aluminum), and

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

1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.