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ASTM B381 Specification

Forgings, Fasteners, Boltings, Stud Bolts, Screws, Nuts

Scope

ASTM B381 specification covers 39 grades of annealed titanium and titanium alloy forgings as follows:

Grade F-1-UNS R50250. Unalloyed titanium,
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),
Grade F-3-UNS R50550. Unalloyed titanium,
Grade F-4-UNS R50700. Unalloyed titanium,
Grade F-5-UNS R56400. Titanium alloy (6 % aluminum, 4 % vanadium),
Grade F-6-UNS R54520. Titanium alloy (5 % aluminum, 2.5 % tin),
Grade F-7-UNS R52400. Unalloyed titanium plus 0.12 to 0.25 % palladium,
Grade F-7H-UNS R52400. Unalloyed titanium plus 0.12 to 0.25 % palladium (Grade 7 with 58 ksi (400 MPa) minimum UTS),
Grade F-9-UNS R56320. Titanium alloy (3 % aluminum, 2.5 % vanadium),
Grade F-11-UNS R52250. Unalloyed titanium plus 0.12 to 0.25 % palladium,
Grade F-12-UNS R53400. Titanium alloy (0.3 % molybdenum, 0.8 % nickel),
Grade F-13-UNS R53413. Titanium alloy (0.5 % nickel, 0.05 % ruthenium),
Grade F-14-UNS R53414. Titanium alloy (0.5 % nickel, 0.05 % ruthenium),
Grade F-15-UNS R53415. Titanium alloy (0.5 % nickel, 0.05 % ruthenium),
Grade F-16-UNS R52402. Unalloyed titanium plus 0.04 to 0.08 % palladium,
Grade F-16H-UNS R52402. Unalloyed titanium plus 0.04 to 0.08 % palladium (Grade 16 with 58 ksi (400\ MPa) minimum UTS),
Grade F-17- UNS R52252. Unalloyed titanium plus 0.04 to 0.08 % palladium,
Grade F-18-UNS R56322. Titanium alloy (3 % aluminum, 2.5 % vanadium) plus 0.04 % to 0.08 % palladium,
Grade F-19-UNS R58640. Titanium alloy (3 % aluminum, 8 % vanadium, 6 % chromium, 4 % zirconium, 4 % molybdenum),
Grade F-20 -UNS R58645. Titanium alloy (3 % aluminum, 8 % vanadium, 6 % chromium, 4 % zirconium, 4 % molybdenum) plus 0.04 to 0.08 % palladium,
Grade F-21- UNS R58210. Titanium alloy (3 % aluminum, 2.7 % niobium, 15 % molybdenum, 0.25 % silicon),

Grade F-23-UNS R56407. Titanium alloy (6 % aluminum, 4 % vanadium, extra low interstitials, ELI),
Grade F-24- UNS R56405. Titanium alloy (6 % aluminum, 4 % vanadium) plus 0.04 to 0.08 % palladium,
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,
Grade F-26- UNS R52404. Unalloyed titanium plus 0.08 to 0.14 % ruthenium,
Grade F-26H- UNS R52404. Unalloyed titanium plus 0.08 to 0.14 % ruthenium (Grade 26 with 58 ksi (400 MPa) minimum UTS),
Grade F-27- UNS R52254. Unalloyed titanium plus 0.08 to 0.14 % ruthenium,
Grade F-28- UNS R56323. Titanium alloy (3 % aluminum, 2.5 % vanadium plus 0.08 to 0.14 % ruthenium),
Grade F-29- UNS R56404. Titanium alloy (6 % aluminum, 4 % vanadium, extra low interstitial, ELI plus 0.08 to 0.14 % ruthenium),
Grade F-30- UNS R53530. Titanium alloy (0.3 % cobalt, 0.05 % palladium),
Grade F-31- UNS R53532. Titanium alloy (0.3 % cobalt, 0.05 % palladium),
Grade F-32- UNS R55111. Titanium alloy (5 % aluminum, 1 % vanadium, 1 % tin, 1 % zirconium, 0.8 % molybdenum),
Grade F-33- UNS R53442. Titanium alloy (0.4 % nickel, 0.015 % palladium, 0.025 % ruthenium, 0.15 % chromium),
Grade F-34- UNS R53445. Titanium alloy (0.4 % nickel, 0.015 % palladium, 0.025 % ruthenium, 0.15 % chromium),
Grade F-35- UNS R56340. Titanium alloy (4.5 % aluminum, 2 % molybdenum, 1.6 % vanadium, 0.5 % iron,
Grade F-36- UNS R58450. Titanium alloy (45 % niobium),
Grade F-37- UNS R52815. Titanium alloy (1.5 % aluminum), and
Grade F-38- UNS R54250. Titanium alloy (4 % aluminum, 2.5 % vanadium, 1.5 % iron).

Related Specifications of ASTM B381

ASTM B381 Chemical Composition

Grade Composition, Weight PercentA,B,C,D,E
UNS Number C, max O range or max. N, max. H, max. Fe range or max. Al V Pd Ru Ni Mo Cr Co Zr Nb Sn Si Other Elements,
max. each		 Other Elements,
max. total
ASTM B381 Grade F-1 R50250 0.08 0.18 0.03 0.015 0.20 . . . . . . . . . . . . . . . - - - -   . . . . . . . . . . . . . . . 0.1 0.4
ASTM B381 Grade F-2/
ASTM B381 F-2H		 R50400 0.08 0.25 0.03 0.015 0.30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.1 0.4
ASTM B381 Grade F-3 R50550 0.08 0.35 0.05 0.015 0.30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.1 0.4
ASTM B381 Grade F-4 R50700 0.08 0.40 0.05 0.015 0.50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.1 0.4
ASTM B381 Grade F-5 R56400 0.08 0.20 0.05 0.015 0.40 5.5- 6.75 3.5-4.5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.1 0.4
ASTM B381 Grade F-6 R54520 0.08 0.20 0.03 0.015 0.50 4.0-6.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.0-3.0 . . . 0.1 0.4
ASTM B381 Grade F-7/
ASTM B381 F-7H		 R52400 0.08 0.25 0.03 0.015 0.30 . . . . . . 0.12-0.25 . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.1 0.4
ASTM B381 Grade F-9 R56320 0.08 0.15 0.03 0.015 0.25 2.5-3.5 2.0-3.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.1 0.4
ASTM B381 Grade F-11 R52250 0.08 0.18 0.03 0.015 0.20 . . . . . . 0.12-0.25 . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.1 0.4
ASTM B381 Grade F-12 R53400 0.08 0.25 0.03 0.015 0.30 . . . . . . . . . . . . 0.6-0.9 0.2-0.4 . . . . . . . . . . . . . . . . . . 0.1 0.4
ASTM B381 Grade F-13 R53413 0.08 0.10 0.03 0.015 0.20 . . . . . . . . . 0.04-0.06 0.4-0.6 . . . . . . . . . . . . . . . . . . . . . 0.1 0.4
ASTM B381 Grade F-14 R53414 0.08 0.15 0.03 0.015 0.30 . . . . . . . . . 0.04-0.06 0.4-0.6 . . . . . . . . . . . . . . . . . . . . . 0.1 0.4
ASTM B381 Grade F-15 R53415 0.08 0.25 0.05 0.015 0.30 . . . . . . . . . 0.04-0.06 0.4-0.6 . . . . . . . . . . . . . . . . . . . . . 0.1 0.4
ASTM B381 Grade F-16/
ASTM B381 F-16H		 R52402 0.08 0.25 0.03 0.015 0.30 . . . . . . 0.04-0.08 . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.1 0.4
ASTM B381 Grade F-17 R52252 0.08 0.18 0.03 0.015 0.20 . . . . . . 0.04-0.08 . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.1 0.4
ASTM B381 Grade F-18 R56322 0.08 0.15 0.03 0.015 0.25 2.5-3.5 2.0-3.0 0.04-0.08 . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.1 0.4
ASTM B381 Grade F-19 R58640 0.05 0.12 0.03 0.02 0.30 3.0-4.0 7.5-8.5 . . . . . . . . . 3.5-4.5 5.5-6.5 . . . 3.5-4.5 . . . . . . . . . 0.15 0.4
ASTM B381 Grade F-20 R58645 0.05 0.12 0.03 0.02 0.30 3.0-4.0 7.5-8.5 0.04-0.08 . . . . . . 3.5-4.5 5.5-6.5 . . . 3.5-4.5 . . . . . . . . . 0.15 0.4
ASTM B381 Grade F-21 R58210 0.05 0.17 0.03 0.015 0.40 2.5-3.5 . . . . . . . . . . . . 14.0-16.0 . . . . . . . . . 2.2-3.2 . . . 0.15-0.25 0.1 0.4
ASTM B381 Grade F-23 R56407 0.08 0.13 0.03 0.0125 0.25 5.5-6.5 3.5-4.5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.1 0.4
ASTM B381 Grade F-24 R56405 0.08 0.20 0.05 0.015 0.40 5.5-6.75 3.5-4.5 0.04-0.08 . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.1 0.4
ASTM B381 Grade F-25 R56403 0.08 0.20 0.05 0.015 0.40 5.5-6.75 3.5-4.5 0.04-0.08 . . . 0.3-0.8 . . . . . . . . . . . . . . . . . . . . . 0.1 0.4
ASTM B381 Grade F-26/
ASTM B381 F-16H		 R52404 0.08 0.25 0.03 0.015 0.30 . . . . . . . . . 0.08-0.14 . . . . . . . . . . . . . . . . . . . . . . . . 0.1 0.4
ASTM B381 Grade F-27 R52254 0.08 0.18 0.03 0.015 0.20 . . . . . . . . . 0.08-0.14 . . . . . . . . . . . . . . . . . . . . . . . . 0.1 0.4
ASTM B381 Grade F-28 R56323 0.08 0.15 0.03 0.015 0.25 2.5-3.5 2.0-3.0 . . . 0.08-0.14 . . . . . . . . . . . . . . . . . . . . . . . . 0.1 0.4
ASTM B381 Grade F-29 R56404 0.08 0.13 0.03 0.0125 0.25 5.5-6.5 3.5-4.5 . . . 0.08-0.14 . . . . . . . . . . . . . . . . . . . . . . . . 0.1 0.4
ASTM B381 Grade F-30 R53530 0.08 0.25 0.03 0.015 0.30 . . . . . . 0.04-0.08 . . . . . . . . . . . . 0.20-0.80 . . . . . . . . . . . . 0.1 0.4
ASTM B381 Grade F-31 R53532 0.08 0.35 0.05 0.015 0.30 . . . . . . 0.04-0.08 . . . . . . . . . . . . 0.20-0.80 . . . . . . . . . . . . 0.1 0.4
ASTM B381 Grade F-32 R55111 0.08 0.11 0.03 0.015 0.25 4.5-5.5 0.6-1.4 . . . . . . . . . 0.6-1.2 . . . . . . 0.6-1.4 . . . 0.6-1.4 0.06-0.14 0.1 0.4
ASTM B381 Grade F-33 R53442 0.08 0.25 0.03 0.015 0.30 . . . . . . 0.01-0.02 0.02-0.04 0.35-0.55 . . . 0.1-0.2 . . . . . . . . . . . . . . . 0.1 0.4
ASTM B381 Grade F-34 R53445 0.08 0.35 0.05 0.015 0.30 . . . . . . 0.01-0.02 0.02-0.04 0.35-0.55 . . . 0.1-0.2 . . . . . . . . . . . . . . . 0.1 0.4
ASTM B381 Grade F-35 R56340 0.08 0.25 0.05 0.015 0.20-0.80 4.0-5.0 1.1-2.1 . . . . . . . . . 1.5-2.5 . . . . . . . . . . . . . . . 0.20-0.40 0.1 0.4
ASTM B381 Grade F-36 R58450 0.04 0.16 0.03 0.015 0.03 . . . . . . . . . . . . . . . . . . . . . . . . . . . 42.0-47.0 . . . . . . 0.1 0.4
ASTM B381 Grade F-37 R52815 0.08 0.25 0.03 0.015 0.30 1.0-2.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.1 0.4
ASTM B381 Grade F-38 R54250 0.08 0.20-0.30 0.03 0.015 1.2-1.8 3.5-4.5 2.0-3.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.1 0.4
  • A At minimum, the analysis of samples from the top and bottom of the ingot shall be completed and reported for all elements listed for the respective grade in this table.
    B Final product hydrogen shall be reported. Ingot hydrogen need not be reported. Lower hydrogen may be obtained by negotiation with the manufacturer.
    C Single values are maximum. The percentage of titanium is determined by difference.
    D Other elements need not be reported unless the concentration level is greater than 0.1 % each, or 0.4 % total. Other elements may not be added intentionally. Other elements may be present in titanium or titanium alloys in small quantities and are inherent to the manufacturing process. In titanium these elements typically include aluminum, vanadium, tin, chromium, molybdenum, niobium, zirconium, hafnium, bismuth, ruthenium, palladium, yttrium, copper, silicon, cobalt, tantalum, nickel, boron, manganese, and tungsten.
    E The purchaser may, in the written purchase order, request analysis for specific residual elements not listed in this specification.

ASTM B381 Mechanical Requirements

Tensile Requirements

Grade Tensile Strength,
min		 Yield Strength
(0.2 % Offset),
min or Range		 Elongation in 4D,
min, %		 Reduction of Area,
min, %
ksi (MPa) ksi (MPa)
ASTM B381 Grade F-1 35 (240) 20 (138) 24 30
ASTM B381 Grade F-2 50 (345) 40 (275) 20 30
ASTM B381 Grade F-2HB,C 58 (400) 40 (275) 20 30
ASTM B381 Grade F-3 65 (450) 55 (380) 18 30
ASTM B381 Grade F-4 80 (550) 70 (483) 15 25
ASTM B381 Grade F-5 130 (895) 120 (828) 10 25
ASTM B381 Grade F-6 120 (828) 115 (795) 10 25
ASTM B381 Grade F-7 50 (345) 40 (275) 20 30
ASTM B381 Grade F-7HB,C 58 (400) 40 (275) 20 30
ASTM B381 Grade F-9 120 (828) 110 (759) 10 25
ASTM B381 Grade F-9D 90 (620) 70 (483) 15 25
ASTM B381 Grade F-11 35 (240) 20 (138) 24 30
ASTM B381 Grade F-12 70 (483) 50 (345) 18 25
ASTM B381 Grade F-13 40 (275) 25 (170) 24 30
ASTM B381 Grade F-14 60 (410) 40 (275) 20 30
ASTM B381 Grade F-15 70 (483) 55 (380) 18 25
ASTM B381 Grade F-16 50 (345) 40 (275) 20 30
ASTM B381 Grade F-16HB,C 58 (400) 40 (275) 20 30
ASTM B381 Grade F-17 35 (240) 20 (138) 24 30
ASTM B381 Grade F-18 90 (620) 70 (483) 15 25
ASTM B381 Grade F-18D 90 (620) 70 (483) 12 20
ASTM B381 Grade F-19E 115 (793) 110 (759) 15 25
ASTM B381 Grade F-19F 135 (930) 130 to 159 (897) to (1096) 10 20
ASTM B381 Grade F-19G 165 (1138) 160 to 185 (1104) to (1276) 5 20
ASTM B381 Grade F-20E 115 (793) 110 (759) 15 25
ASTM B381 Grade F-20F 135 (930) 130 to 159 (897) to (1096) 10 20
ASTM B381 Grade F-20G 165 (1138) 160 to 185 (1104) to (1276) 5 20
ASTM B381 Grade F-21E 115 (793) 110 (759) 15 35
ASTM B381 Grade F-21F 140 (966) 130 to 159 (897) to (1096) 10 30
ASTM B381 Grade F-21G 170 (1172) 160 to 185 (1104) to (1276) 8 20
ASTM B381 Grade F-23 120 (828) 110 (759) 10 25
ASTM B381 Grade F-23D 120 (828) 110 (759) 7.5H , 6.0I 25
ASTM B381 Grade F-24 130 (895) 120 (828) 10 25
ASTM B381 Grade F-25 130 (895) 120 (828) 10 25
ASTM B381 Grade F-26 50 (345) 40 (275) 20 30
ASTM B381 Grade F-26HB,C 58 (400) 40 (275) 20 30
ASTM B381 Grade F-27 35 (240) 20 (138) 24 30
ASTM B381 Grade F-28 90 (620) 70 (483) 15 25
ASTM B381 Grade F-28D 90 (620) 70 (483) 12 20
ASTM B381 Grade F-29 120 (828) 110 (759) 10 25
ASTM B381 Grade F-29D 120 (828) 110 (759) 7.5H , 6.0I 15
ASTM B381 Grade F-30 50 (345) 40 (275) 20 30
ASTM B381 Grade F-31 65 (450) 55 (380) 18 30
ASTM B381 Grade F-32 100 (689) 85 (586) 10 25
ASTM B381 Grade F-33 50 (345) 40 (275) 20 30
ASTM B381 Grade F-34 65 (450) 55 (380) 18 30
ASTM B381 Grade F-35 130 (895) 120 (828) 5 20
ASTM B381 Grade F-36 65 (450) 60 to 95 (410 to 655) 10 ...
ASTM B381 Grade F-37 50 (345) 31 (215) 20 30
ASTM B381 Grade F-38 130 (895) 115 (794) 10 25
  • A These properties apply to forgings having a cross section no greater than 3 in.2 (1935 mm2 ). Mechanical properties of forgings having greater cross sections shall be negotiated between the manufacturer and the purchaser.
    B Material is identical to the corresponding numeric grade (that is, Grade F-2H = Grade F-2) except for the higher guaranteed minimum UTS, and may be dual certified with its corresponding numeric grade. Grade F-2H, F-7H, F-16H, and F-26H are intended primarily for pressure vessel use.
    C The H grades were added in response to a user association request based on its study of over 5200 commercial Grade 2, 7, 16, and 26 test reports where over 99 % met the 58 ksi minimum UTS.
    D Properties for material in transformed-beta condition.
    E Properties for material in the solution treated condition.
    F Properties for solution treated and aged condition-Moderate strength (determined by aging temperature).
    G Properties for solution treated and aged condition-High Strength (determined by aging temperature).
    H For product section or wall thickness values <1.0 in.
    I For product section or wall thickness values ≥1.0 in

ASTM B381 Certifications

  • EN 10204 3.1
  • EN 10204 3.2
  • PED 2014/68/EC
  • MERKBLATT AD 2000 W2/W7/W10
  • API 20 E BSL 1/ BSL 2
  • NACE MR 0175
  • NACE MR 0103

ASTM B381 Supplementary Requirements

S1 U.S. Military Requirements
S2 Referenced Documents