ASTM B381-06a

    Standard Specification for Titanium and Titanium Alloy Forgings

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    1. Scope

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

    1.1.1 Grade F-1 Unalloyed titanium,

    1.1.2 Grade F-2 Unalloyed titanium,

    Grade F-2H

    Unalloyed titanium (Grade 2 with 58 ksi minimum UTS),

    1.1.3 Grade F-3 Unalloyed titanium,

    1.1.4 Grade F-4 Unalloyed titanium,

    1.1.5 Grade F-5 Titanium alloy (6 % aluminum, 4 % vanadium),

    1.1.6 Grade F-6 Titanium alloy (5 % aluminum, 2.5 % tin),

    1.1.7 Grade F-7 Unalloyed titanium plus 0.12 to 0.25 % palladium,

    Grade F-7H

    Unalloyed titanium plus 0.12 to 0.25 % palladium (Grade 7 with 58 ksi minimum UTS),

    1.1.8 Grade F-9 Titanium alloy (3 % aluminum, 2.5 % vanadium),

    1.1.9 Grade F-11 Unalloyed titanium plus 0.12 to 0.25 % palladium,

    1.1.10 Grade F-12 Titanium alloy (0.3 % molybdenum, 0.8 % nickel),

    1.1.11 Grade F-13 Titanium alloy (0.5 % nickel, 0.05 % ruthenium),

    1.1.12 Grade F-14 Titanium alloy (0.5 % nickel, 0.05 % ruthenium),

    1.1.13 Grade F-15 Titanium alloy (0.5 % nickel, 0.05 % ruthenium),

    1.1.14 Grade F-16 Unalloyed titanium plus 0.04 to 0.08 % palladium,

    Grade F-16H

    Unalloyed titanium plus 0.04 to 0.08 % palladium (Grade 16 with 58 ksi minimum UTS),

    1.1.15 Grade F-17 Unalloyed titanium plus 0.04 to 0.08 % palladium,

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

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

    1.1.18 Grade F-20 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 Titanium alloy (3 % aluminum, 2.7 % niobium, 15 % molybdenum, 0.25 % silicon),

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

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

    1.1.22 Grade F-25 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 Unalloyed titanium plus 0.08 to 0.14 % ruthenium,

    Grade F-26H

    Unalloyed titanium plus 0.08 to 0.14 % ruthenium (Grade 26 with 58 ksi minimum UTS),

    1.1.24 Grade F-27 Unalloyed titanium plus 0.08 to 0.14 % ruthenium,

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

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

    1.1.27 Grade F-30Titanium alloy (0.3 % cobalt, 0.05 % palladium),

    1.1.28 Grade F-31 Titanium alloy (0.3 % cobalt, 0.05 % palladium),

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

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

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

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

    1.1.33 Grade F-36 Titanium alloy (45 % niobium),

    1.1.34 Grade F-37Titanium alloy (1.5 % aluminum), and

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

    Note 1

    H grade material is identical to the corresponding numeric grade (that is, Grade 2H = Grade 2) except for the higher guaranteed minimum UTS, and may always be certified as meeting the requirements of its corresponding numeric grade. Grades 2H, 7H, 16H, and 26H are intended primarily for pressure vessel use.

    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.

    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.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    B348 Specification for Titanium and Titanium Alloy Bars and Billets

    E8 Test Methods for Tension Testing of Metallic Materials

    E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications

    E539 Test Method for Analysis of Titanium Alloys by X-Ray Fluorescence Spectrometry

    E1409 Test Method for Determination of Oxygen and Nitrogen in Titanium and Titanium Alloys by the Inert Gas Fusion Technique

    E1447 Test Method for Determination of Hydrogen in Titanium and Titanium Alloys by Inert Gas Fusion Thermal Conductivity/Infrared Detection Method

    E1941 Test Method for Determination of Carbon in Refractory and Reactive Metals and Their Alloys by Combustion Analysis

    E2371 Test Method for Analysis of Titanium and Titanium Alloys by Direct Current Plasma and Inductively Coupled Plasma Atomic Emission Spectrometry (Performance-Based Test Methodology)

    E2626 Guide for Spectrometric Analysis of Reactive and Refractory Metals


    ICS Code

    ICS Number Code 77.150.50 (Titanium products)

    UNSPSC Code

    UNSPSC Code 31132900(Titanium forgings)


    DOI: 10.1520/B0381-06A

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