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ASTM B381

ASTM B381 Specification

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

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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).

Chemical Requirements

GradeComposition, Weight PercentA,B,C,D,E
UNS NumberC, maxO range or max.N, max.H, max.Fe range or max.AlVPdRuNiMoCrCoZrNbSnSiOther Elements,
max. each		Other Elements,
max. total
ASTM B381 Grade F-1R502500.080.180.030.0150.20. . .. . .. . .. . .. . .– – – – . . .. . .. . .. . .. . .0.10.4
ASTM B381 Grade F-2/
ASTM B381 F-2H		R504000.080.250.030.0150.30. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .0.10.4
ASTM B381 Grade F-3R505500.080.350.050.0150.30. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .0.10.4
ASTM B381 Grade F-4R507000.080.400.050.0150.50. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .0.10.4
ASTM B381 Grade F-5R564000.080.200.050.0150.405.5- 6.753.5-4.5. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .0.10.4
ASTM B381 Grade F-6R545200.080.200.030.0150.504.0-6.0. . .. . .. . .. . .. . .. . .. . .. . .. . .2.0-3.0. . .0.10.4
ASTM B381 Grade F-7/
ASTM B381 F-7H		R524000.080.250.030.0150.30. . .. . .0.12-0.25. . .. . .. . .. . .. . .. . .. . .. . .. . .0.10.4
ASTM B381 Grade F-9R563200.080.150.030.0150.252.5-3.52.0-3.0. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .0.10.4
ASTM B381 Grade F-11R522500.080.180.030.0150.20. . .. . .0.12-0.25. . .. . .. . .. . .. . .. . .. . .. . .. . .0.10.4
ASTM B381 Grade F-12R534000.080.250.030.0150.30. . .. . .. . .. . .0.6-0.90.2-0.4. . .. . .. . .. . .. . .. . .0.10.4
ASTM B381 Grade F-13R534130.080.100.030.0150.20. . .. . .. . .0.04-0.060.4-0.6. . .. . .. . .. . .. . .. . .. . .0.10.4
ASTM B381 Grade F-14R534140.080.150.030.0150.30. . .. . .. . .0.04-0.060.4-0.6. . .. . .. . .. . .. . .. . .. . .0.10.4
ASTM B381 Grade F-15R534150.080.250.050.0150.30. . .. . .. . .0.04-0.060.4-0.6. . .. . .. . .. . .. . .. . .. . .0.10.4
ASTM B381 Grade F-16/
ASTM B381 F-16H		R524020.080.250.030.0150.30. . .. . .0.04-0.08. . .. . .. . .. . .. . .. . .. . .. . .. . .0.10.4
ASTM B381 Grade F-17R522520.080.180.030.0150.20. . .. . .0.04-0.08. . .. . .. . .. . .. . .. . .. . .. . .. . .0.10.4
ASTM B381 Grade F-18R563220.080.150.030.0150.252.5-3.52.0-3.00.04-0.08. . .. . .. . .. . .. . .. . .. . .. . .. . .0.10.4
ASTM B381 Grade F-19R586400.050.120.030.020.303.0-4.07.5-8.5. . .. . .. . .3.5-4.55.5-6.5. . .3.5-4.5. . .. . .. . .0.150.4
ASTM B381 Grade F-20R586450.050.120.030.020.303.0-4.07.5-8.50.04-0.08. . .. . .3.5-4.55.5-6.5. . .3.5-4.5. . .. . .. . .0.150.4
ASTM B381 Grade F-21R582100.050.170.030.0150.402.5-3.5. . .. . .. . .. . .14.0-16.0. . .. . .. . .2.2-3.2. . .0.15-0.250.10.4
ASTM B381 Grade F-23R564070.080.130.030.01250.255.5-6.53.5-4.5. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .0.10.4
ASTM B381 Grade F-24R564050.080.200.050.0150.405.5-6.753.5-4.50.04-0.08. . .. . .. . .. . .. . .. . .. . .. . .. . .0.10.4
ASTM B381 Grade F-25R564030.080.200.050.0150.405.5-6.753.5-4.50.04-0.08. . .0.3-0.8. . .. . .. . .. . .. . .. . .. . .0.10.4
ASTM B381 Grade F-26/
ASTM B381 F-16H		R524040.080.250.030.0150.30. . .. . .. . .0.08-0.14. . .. . .. . .. . .. . .. . .. . .. . .0.10.4
ASTM B381 Grade F-27R522540.080.180.030.0150.20. . .. . .. . .0.08-0.14. . .. . .. . .. . .. . .. . .. . .. . .0.10.4
ASTM B381 Grade F-28R563230.080.150.030.0150.252.5-3.52.0-3.0. . .0.08-0.14. . .. . .. . .. . .. . .. . .. . .. . .0.10.4
ASTM B381 Grade F-29R564040.080.130.030.01250.255.5-6.53.5-4.5. . .0.08-0.14. . .. . .. . .. . .. . .. . .. . .. . .0.10.4
ASTM B381 Grade F-30R535300.080.250.030.0150.30. . .. . .0.04-0.08. . .. . .. . .. . .0.20-0.80. . .. . .. . .. . .0.10.4
ASTM B381 Grade F-31R535320.080.350.050.0150.30. . .. . .0.04-0.08. . .. . .. . .. . .0.20-0.80. . .. . .. . .. . .0.10.4
ASTM B381 Grade F-32R551110.080.110.030.0150.254.5-5.50.6-1.4. . .. . .. . .0.6-1.2. . .. . .0.6-1.4. . .0.6-1.40.06-0.140.10.4
ASTM B381 Grade F-33R534420.080.250.030.0150.30. . .. . .0.01-0.020.02-0.040.35-0.55. . .0.1-0.2. . .. . .. . .. . .. . .0.10.4
ASTM B381 Grade F-34R534450.080.350.050.0150.30. . .. . .0.01-0.020.02-0.040.35-0.55. . .0.1-0.2. . .. . .. . .. . .. . .0.10.4
ASTM B381 Grade F-35R563400.080.250.050.0150.20-0.804.0-5.01.1-2.1. . .. . .. . .1.5-2.5. . .. . .. . .. . .. . .0.20-0.400.10.4
ASTM B381 Grade F-36R584500.040.160.030.0150.03. . .. . .. . .. . .. . .. . .. . .. . .. . .42.0-47.0. . .. . .0.10.4
ASTM B381 Grade F-37R528150.080.250.030.0150.301.0-2.0. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .0.10.4
ASTM B381 Grade F-38R542500.080.20-0.300.030.0151.2-1.83.5-4.52.0-3.0. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .0.10.4
  • 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.

Mechanical Requirements

Tensile Requirements

GradeTensile 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-135(240)20(138)2430
ASTM B381 Grade F-250(345)40(275)2030
ASTM B381 Grade F-2HB,C58(400)40(275)2030
ASTM B381 Grade F-365(450)55(380)1830
ASTM B381 Grade F-480(550)70(483)1525
ASTM B381 Grade F-5130(895)120(828)1025
ASTM B381 Grade F-6120(828)115(795)1025
ASTM B381 Grade F-750(345)40(275)2030
ASTM B381 Grade F-7HB,C58(400)40(275)2030
ASTM B381 Grade F-9120(828)110(759)1025
ASTM B381 Grade F-9D90(620)70(483)1525
ASTM B381 Grade F-1135(240)20(138)2430
ASTM B381 Grade F-1270(483)50(345)1825
ASTM B381 Grade F-1340(275)25(170)2430
ASTM B381 Grade F-1460(410)40(275)2030
ASTM B381 Grade F-1570(483)55(380)1825
ASTM B381 Grade F-1650(345)40(275)2030
ASTM B381 Grade F-16HB,C58(400)40(275)2030
ASTM B381 Grade F-1735(240)20(138)2430
ASTM B381 Grade F-1890(620)70(483)1525
ASTM B381 Grade F-18D90(620)70(483)1220
ASTM B381 Grade F-19E115(793)110(759)1525
ASTM B381 Grade F-19F135(930)130 to 159(897) to (1096)1020
ASTM B381 Grade F-19G165(1138)160 to 185(1104) to (1276)520
ASTM B381 Grade F-20E115(793)110(759)1525
ASTM B381 Grade F-20F135(930)130 to 159(897) to (1096)1020
ASTM B381 Grade F-20G165(1138)160 to 185(1104) to (1276)520
ASTM B381 Grade F-21E115(793)110(759)1535
ASTM B381 Grade F-21F140(966)130 to 159(897) to (1096)1030
ASTM B381 Grade F-21G170(1172)160 to 185(1104) to (1276)820
ASTM B381 Grade F-23120(828)110(759)1025
ASTM B381 Grade F-23D120(828)110(759)7.5H , 6.0I25
ASTM B381 Grade F-24130(895)120(828)1025
ASTM B381 Grade F-25130(895)120(828)1025
ASTM B381 Grade F-2650(345)40(275)2030
ASTM B381 Grade F-26HB,C58(400)40(275)2030
ASTM B381 Grade F-2735(240)20(138)2430
ASTM B381 Grade F-2890(620)70(483)1525
ASTM B381 Grade F-28D90(620)70(483)1220
ASTM B381 Grade F-29120(828)110(759)1025
ASTM B381 Grade F-29D120(828)110(759)7.5H , 6.0I15
ASTM B381 Grade F-3050(345)40(275)2030
ASTM B381 Grade F-3165(450)55(380)1830
ASTM B381 Grade F-32100(689)85(586)1025
ASTM B381 Grade F-3350(345)40(275)2030
ASTM B381 Grade F-3465(450)55(380)1830
ASTM B381 Grade F-35130(895)120(828)520
ASTM B381 Grade F-3665(450)60 to 95(410 to 655)10…
ASTM B381 Grade F-3750(345)31(215)2030
ASTM B381 Grade F-38130(895)115(794)1025
  • 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

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

Supplementary Requirements

S1U.S. Military Requirements
S2Referenced Documents