ASTM B348/B348M-21

Standard Specification for Titanium and Titanium Alloy Bars and Billets

ABSTRACT
This specification covers annealed bars and grills made from titanium or its alloys. All material grades covered should conform to the required chemical composition requirements. Elements that are intentionally added to the melt should be identified, analyzed and reported in the chemical analysis. Specimens for tension tests should be machined and the tensile properties determined using a specified strain rate through the yield strength and at an increasing rate. Each annealed material may be furnished as either descaled, sandblasted, ground, or rough turned.
SCOPE
1.1 This specification2 covers annealed titanium and titanium alloy bars and billets as follows:  
1.1.1 Grade 1—UNS R50250. Unalloyed titanium,  
1.1.2 Grade 2—UNS R50400. Unalloyed titanium,
1.1.2.1 Grade 2H—UNS R50400. Unalloyed titanium (Grade 2 with 58 ksi [400 MPa] minimum UTS),  
1.1.3 Grade 3—UNS R50550. Unalloyed titanium,  
1.1.4 Grade 4—UNS R50700. Unalloyed titanium,  
1.1.5 Grade 5—UNS R56400. Titanium alloy (6 % aluminum, 4 % vanadium),  
1.1.6 Grade 6—UNS R54520. Titanium alloy (5 % aluminum, 2.5 % tin),  
1.1.7 Grade 7—UNS R52400. Unalloyed titanium plus 0.12 to 0.25 % palladium,
1.1.7.1 Grade 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 9—UNS R56320. Titanium alloy (3 % aluminum, 2.5 % vanadium),  
1.1.9 Grade 11—UNS R52250. Unalloyed titanium plus 0.12 to 0.25 % palladium,  
1.1.10 Grade 12—UNS R53400. Titanium alloy (0.3 % molybdenum, 0.8 % nickel),  
1.1.11 Grade 13—UNS R53413. Titanium alloy (0.5 % nickel, 0.05 % ruthenium),  
1.1.12 Grade 14—UNS R53414. Titanium alloy (0.5 % nickel, 0.05 % ruthenium),  
1.1.13 Grade 15—UNS R53415. Titanium alloy (0.5 % nickel, 0.05 % ruthenium),  
1.1.14 Grade 16—UNS R52402. Unalloyed titanium plus 0.04 to 0.08 % palladium,
1.1.14.1 Grade 16H—UNS R52402. Unalloyed titanium plus 0.04 to 0.08 % palladiumm (Grade 16 with 58 ksi [400 MPa] minimum UTS),  
1.1.15 Grade 17—UNS R52252. Unalloyed titanium plus 0.04 to 0.08 % palladium,  
1.1.16 Grade 18—UNS R56322. Titanium alloy (3 % aluminum, 2.5 % vanadium) plus 0.04 to 0.08 % palladium,  
1.1.17 Grade 19—UNS R58640. Titanium alloy (3 % aluminum, 8 % vanadium, 6 % chromium, 4 % zirconium, 4 % molybdenum),  
1.1.18 Grade 20—UNS R58645. Titanium alloy (3 % aluminum, 8 % vanadium, 6 % chromium, 4 % zirconium, 4 % molybdenum) plus 0.04 %–0.08 % palladium,  
1.1.19 Grade 21—UNS R58210. Titanium alloy (15 % molybdenum, 3 % aluminum, 2.7 % niobium, 0.25 % silicon),  
1.1.20 Grade 23—UNS R56407. Titanium alloy (6 % aluminum, 4 % vanadium with extra low interstitial elements, ELI),  
1.1.21 Grade 24—UNS R56405. Titanium alloy (6 % aluminum, 4 % vanadium) plus 0.04 % to 0.08 % palladium,  
1.1.22 Grade 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 26—UNS R52404. Unalloyed titanium plus 0.08 to 0.14 % ruthenium,
1.1.23.1 Grade 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 27—UNS R52254. Unalloyed titanium plus 0.08 to 0.14 % ruthenium,  
1.1.25 Grade 28—UNS R56323. Titanium alloy (3 % aluminum, 2.5 % vanadium plus 0.08–0.14 % ruthenium),  
1.1.26 Grade 29—UNS R56404. Titanium alloy (6 % aluminum, 4 % vanadium, extra low interstitial, ELI plus 0.08 to 0.14 % ruthenium),  
1.1.27 Grade 30—UNS R53530. Titanium alloy (0.3 % cobalt, 0.05 % palladium),  
1.1.28 Grade 31—UNS R53532. Titanium alloy (0.3 % cobalt, 0.05 % palladium),  
1.1.29 Grade 32—UNS R55111. Titanium alloy (5 % aluminum, 1 % tin, 1 % zirconium, 1 % vanadium, 0.8 % molybdenum),  
1.1.30 Grade 33—UNS R53442. Titanium alloy (0.4 % nickel, 0.015 % palladium, 0.025 % ruthenium, 0.15 % chromium),  
1.1.31 Grade 34—UNS R53445. Titanium alloy (0.4 % nickel, 0.015 % palladium, 0.025 % ruthenium, 0.15 % chromium),  
1.1.32...

General Information

• Status: Published
• Publication Date: 31-Oct-2021
• ICS: 77.150.50 - Titanium products
• Technical Committee: B10 - Reactive and Refractory Metals and Alloys
• Drafting Committee: B10.01 - Titanium

Relations

• Refers: ASTM E8/E8M-24 - Standard Test Methods for Tension Testing of Metallic Materials
• Effective Date: 01-Jan-2024
• Refers: ASTM E539-19 - Standard Test Method for Analysis of Titanium Alloys by Wavelength Dispersive X-Ray Fluorescence Spectrometry
• Effective Date: 01-Mar-2019
• Refers: ASTM E8/E8M-16 - Standard Test Methods for Tension Testing of Metallic Materials
• Effective Date: 15-Jul-2016
• Refers: ASTM E8/E8M-15 - Standard Test Methods for Tension Testing of Metallic Materials
• Effective Date: 01-Feb-2015
• Refers: ASTM E8/E8M-13 - Standard Test Methods for Tension Testing of Metallic Materials
• Effective Date: 01-Jun-2013
• Refers: ASTM E8/E8M-11 - Standard Test Methods for Tension Testing of Metallic Materials
• Effective Date: 01-Dec-2011
• Refers: ASTM E539-11 - Standard Test Method for Analysis of Titanium Alloys by X-Ray Fluorescence Spectrometry
• Effective Date: 01-May-2011
• Refers: ASTM E1941-10 - Standard Test Method for Determination of Carbon in Refractory and Reactive Metals and Their Alloys by Combustion Analysis
• Effective Date: 01-Dec-2010
• Refers: ASTM E1447-09 - Standard Test Method for Determination of Hydrogen in Titanium and Titanium Alloys by the Inert Gas Fusion Thermal Conductivity/Infrared Detection Method
• Effective Date: 01-Mar-2009
• Refers: ASTM E29-08 - Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
• Effective Date: 01-Oct-2008
• Refers: ASTM E1409-08 - Standard Test Method for Determination of Oxygen and Nitrogen in Titanium and Titanium Alloys by the Inert Gas Fusion Technique
• Effective Date: 15-Jun-2008
• Refers: ASTM E2626-08e1 - Standard Guide for Spectrometric Analysis of Reactive and Refractory Metals (Withdrawn 2017)
• Effective Date: 15-Jun-2008
• Refers: ASTM E2626-08 - Standard Guide for Spectrometric Analysis of Reactive and Refractory Metals
• Effective Date: 15-Jun-2008
• Refers: ASTM E539-07 - Standard Test Method for X-Ray Fluorescence Spectrometric Analysis of 6Al-4V Titanium Alloy
• Effective Date: 01-Jun-2007
• Refers: ASTM E539-06 - Standard Test Method for X-Ray Emission Spectrometric Analysis of 6Al-4V Titanium Alloy
• Effective Date: 01-Dec-2006

Overview

ASTM B348/B348M-21 is the globally recognized standard specification for titanium and titanium alloy bars and billets. Developed by ASTM International, this standard outlines the requirements for the manufacture, chemical composition, mechanical properties, and testing protocols for annealed titanium and titanium alloy products designed for structural and specialty applications. The standard covers a comprehensive range of titanium grades, providing uniformity and quality assurance for manufacturers and end-users around the world.

Key Topics

Scope and Coverage

• Specifies requirements for annealed bars and billets made from titanium and titanium alloys.
• Includes more than 35 different grades, covering both unalloyed (commercially pure) titanium and titanium alloy compositions with various intentional alloying elements (such as aluminum, vanadium, palladium, nickel, molybdenum, ruthenium, and others).

Chemical Composition

• All grades must conform to detailed chemical composition requirements.
• Intentional elements must be identified, analyzed, and reported. Residual elements and product analysis limits are strictly defined for each grade.

Mechanical Properties

• Minimum tensile strength, yield strength, elongation, and reduction of area are specified for each grade.
• Tension tests on specimens are mandatory, with procedures for sample preparation and strain rates aligned with ASTM E8/E8M for metallic materials.

Manufacturing and Inspection

• Bars and billets may be hot rolled, forged, extruded, or cold worked, and are supplied annealed.
• Several finish options are permitted: descaled, sandblasted, ground, or rough turned.
• The standard requires freedom from injurious defects, and details are provided for permissible dimensional tolerances and surface quality.

Testing and Certification

• Outlines methods for sampling, chemical analysis, and mechanical property tests.
• Requires manufacturers to provide certification verifying compliance with all requirements, including chemical, mechanical, and manufacturing details.

Applications

Industrial and Engineering Uses

• Utilized in diverse sectors for parts and components demanding high strength, corrosion resistance, and lightweight properties, such as:
  • Aerospace frameworks and fasteners
  • Medical implants and surgical instruments
  • Chemical processing equipment
  • Marine hardware and offshore structures
  • Automotive and motorsports components
  • Power generation and desalination plants

Pressure Vessel and Critical Applications

• Certain grades, specifically the “H” variants (e.g., 2H, 7H, 16H, 26H), are targeted for pressure vessel applications due to enhanced minimum ultimate tensile strength requirements.

Cross-Industry Quality Assurance

• The consistent application of ASTM B348/B348M-21 supports global supply chain quality, providing reliable specifications for the procurement and certification of titanium bars and billets.

Related Standards

• ASTM E8/E8M – Standard Test Methods for Tension Testing of Metallic Materials (for mechanical property evaluation).
• ASTM E539, E1409, E1447, E1941, E2371, E2994 – Series of ASTM standards governing chemical analysis methods for titanium and its alloys.
• ASME SB-348 – Specification equivalent for boiler and pressure vessel code applications.
• ASTM E29 – Practice for significant digits in test data and determination of conformance with specifications.
• ISO standards related to titanium and titanium alloys may also have alignment or cross-reference requirements, depending on the application and region.

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Keywords: ASTM B348/B348M-21, titanium bar specification, titanium alloy billets, chemical requirements, mechanical properties, titanium grades, ASTM standards, titanium manufacturing, industrial titanium applications, aerospace titanium, pressure vessel titanium, international standards.

Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation:B348/B348M −21
Standard Specification for
Titanium and Titanium Alloy Bars and Billets
This standard is issued under the fixed designation B348/B348M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.
A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope* 1.1.15 Grade 17—UNS R52252. Unalloyed titanium plus
2 0.04 to 0.08 % palladium,
1.1 This specification covers annealed titanium and tita-
1.1.16 Grade 18—UNS R56322. Titanium alloy (3 %
nium alloy bars and billets as follows:
aluminum, 2.5 % vanadium) plus 0.04 to 0.08 % palladium,
1.1.1 Grade 1—UNS R50250. Unalloyed titanium,
1.1.17 Grade 19—UNS R58640. Titanium alloy (3 %
1.1.2 Grade 2—UNS R50400. Unalloyed titanium,
aluminum, 8 % vanadium, 6 % chromium, 4 % zirconium, 4 %
1.1.2.1 Grade 2H—UNS R50400. Unalloyed titanium
molybdenum),
(Grade 2 with 58 ksi [400 MPa] minimum UTS),
1.1.18 Grade 20—UNS R58645. Titanium alloy (3 %
1.1.3 Grade 3—UNS R50550. Unalloyed titanium,
aluminum, 8 % vanadium, 6 % chromium, 4 % zirconium, 4 %
1.1.4 Grade 4—UNS R50700. Unalloyed titanium,
molybdenum) plus 0.04 %–0.08 % palladium,
1.1.5 Grade 5—UNS R56400. Titanium alloy (6 %
1.1.19 Grade 21—UNS R58210. Titanium alloy (15 %
aluminum, 4 % vanadium),
molybdenum, 3 % aluminum, 2.7 % niobium, 0.25 % silicon),
1.1.6 Grade 6—UNS R54520. Titanium alloy (5 %
1.1.20 Grade 23—UNS R56407. Titanium alloy (6 %
aluminum, 2.5 % tin),
1.1.7 Grade 7—UNS R52400. Unalloyed titanium plus 0.12 aluminum, 4 % vanadium with extra low interstitial elements,
ELI),
to 0.25 % palladium,
1.1.7.1 Grade 7H—UNS R52400. Unalloyed titanium plus 1.1.21 Grade 24—UNS R56405. Titanium alloy (6 %
0.12 to 0.25 % palladium (Grade 7 with 58 ksi [400 MPa] aluminum, 4 % vanadium) plus 0.04 % to 0.08 % palladium,
minimum UTS),
1.1.22 Grade 25—UNS R56403. Titanium alloy (6 %
1.1.8 Grade 9—UNS R56320. Titanium alloy (3 % aluminum, 4 % vanadium) plus 0.3 % to 0.8 % nickel and
aluminum, 2.5 % vanadium),
0.04 % to 0.08 % palladium,
1.1.9 Grade 11—UNS R52250. Unalloyed titanium plus
1.1.23 Grade 26—UNS R52404. Unalloyed titanium plus
0.12 to 0.25 % palladium,
0.08 to 0.14 % ruthenium,
1.1.10 Grade 12—UNS R53400. Titanium alloy (0.3 %
1.1.23.1 Grade 26H—UNS R52404. Unalloyed titanium
molybdenum, 0.8 % nickel),
plus 0.08 to 0.14 % ruthenium (Grade 26 with 58 ksi [400
1.1.11 Grade 13—UNS R53413. Titanium alloy (0.5 %
MPa] minimum UTS),
nickel, 0.05 % ruthenium),
1.1.24 Grade 27—UNS R52254. Unalloyed titanium plus
1.1.12 Grade 14—UNS R53414. Titanium alloy (0.5 %
0.08 to 0.14 % ruthenium,
nickel, 0.05 % ruthenium),
1.1.25 Grade 28—UNS R56323. Titanium alloy (3 %
1.1.13 Grade 15—UNS R53415. Titanium alloy (0.5 %
aluminum, 2.5 % vanadium plus 0.08–0.14 % ruthenium),
nickel, 0.05 % ruthenium),
1.1.26 Grade 29—UNS R56404. Titanium alloy (6 %
1.1.14 Grade 16—UNS R52402. Unalloyed titanium plus
aluminum, 4 % vanadium, extra low interstitial, ELI plus 0.08
0.04 to 0.08 % palladium,
to 0.14 % ruthenium),
1.1.14.1 Grade 16H—UNS R52402. Unalloyed titanium
1.1.27 Grade 30—UNS R53530. Titanium alloy (0.3 %
plus 0.04 to 0.08 % palladiumm (Grade 16 with 58 ksi [400
cobalt, 0.05 % palladium),
MPa] minimum UTS),
1.1.28 Grade 31—UNS R53532. Titanium alloy (0.3 %
cobalt, 0.05 % palladium),
This specification is under the jurisdiction of ASTM Committee B10 on
1.1.29 Grade 32—UNS R55111. Titanium alloy (5 %
Reactive and Refractory Metals and Alloys and is the direct responsibility of
aluminum, 1 % tin, 1 % zirconium, 1 % vanadium, 0.8 %
Subcommittee B10.01 on Titanium.
Current edition approved Nov. 1, 2021. Published December 2021. Originally
molybdenum),
approved in 1959. Last previous edition approved in 2019 as B348/B348M – 19.
1.1.30 Grade 33—UNS R53442. Titanium alloy (0.4 %
DOI: 10.1520/B0348_B0348M-21.
2 nickel, 0.015 % palladium, 0.025 % ruthenium, 0.15 %
For ASME Boiler and Pressure Vessel Code applications see related Specifi-
cation SB-348 in Section II of that Code. chromium),
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
B348/B348M−21
1.1.31 Grade 34—UNS R53445. Titanium alloy (0.4 % Refractory Metals (Withdrawn 2017)
nickel, 0.015 % palladium, 0.025 % ruthenium, 0.15 % E2994 Test Method for Analysis of Titanium and Titanium
chromium), AlloysbySparkAtomicEmissionSpectrometryandGlow
1.1.32 Grade 35—UNS R56340. Titanium alloy (4.5 % Discharge Atomic Emission Spectrometry (Performance-
aluminum, 2 % molybdenum, 1.6 % vanadium, 0.5 % iron, Based Method)
0.3 % silicon),
3. Terminology
1.1.33 Grade 36—UNS R58450. Titanium alloy (45 %
3.1 Definitions of Terms Specific to This Standard:
niobium),
1.1.34 Grade 37—UNS R52815. Titanium alloy (1.5 % 3.1.1 bar, n—a hot rolled, forged, extruded or cold worked
semi-finished solid section product whose cross sectional area
aluminum),
2 2
1.1.35 Grade 38—UNS R54250. Titanium alloy (4 % is equal to or less than 16 in. [10 323 mm ]; rectangular bar
must be less than or equal to 10 in. [254 mm] in width and
aluminum, 2.5 % vanadium, 1.5 % iron), and
1.1.36 Grade 41—UNS R56461. Titanium alloy (6 % greater than 0.1875 in. [4.8 mm] in thickness.
3.1.1.1 Discussion—Extrudedbarhasbeenapprovedforuse
aluminum, 1 % iron).
NOTE 1—H grade material is identical to the corresponding numeric on unalloyed titanium grades 1, 2, 3 and 4 only. Other grades
grade (that is, Grade 2H = Grade 2) except for the higher guaranteed
may be produced via the extrusion process with agreement
minimum UTS, and may always be certified as meeting the requirements
between the producer and the purchaser.
of its corresponding numeric grade. Grades 2H, 7H, 16H, and 26H are
intended primarily for pressure vessel use. 3.1.2 billet, n—a solid semi-finished section hot worked or
forgedfromaningot,withacrosssectionalareagreaterthan16
1.2 The values state in either inch-pound units or SI units
2 2
in. [10 323 mm ] whose width is less than five times its
are to be regarded separately as standard. The values stated in
thickness.
each system are not exact equivalents; therefore, each system
shall be used independently of the other. Combining values 3.1.3 heat analysis, n—chemical determination based on
from the two systems may result in nonconformance with the analysis of ingot or alternate (see Table 1 footnoteA, and 9.2);
specification. check analysis limits do not apply for Heat Analysis/Producer
Ingot Analysis.
1.3 This international standard was developed in accor-
dance with internationally recognized principles on standard- 3.1.4 product analysis, n—an analysis based on semi-
ization established in the Decision on Principles for the finished or final product; the purchaser may apply check
Development of International Standards, Guides and Recom- analysis limits to determine compliance with the specification;
mendations issued by the World Trade Organization Technical check analysis limits are not for producer’s use at producer
Barriers to Trade (TBT) Committee. ingot acceptance.
3.1.5 check analysis limits, n—Table 3, Permissible Varia-
2. Referenced Documents
tions in Product Analysis: Percentages above and below those
listed in Table 1, when tested on product, by or for the
2.1 ASTM Standards:
purchaser, or acceptable to purchaser to show compliance with
E8/E8M Test Methods for Tension Testing of Metallic Ma-
a given specification.
terials
E29 Practice for Using Significant Digits in Test Data to
4. Ordering Information
Determine Conformance with Specifications
4.1 Orders for material under this specification shall include
E539 Test Method for Analysis of Titanium Alloys by
the following information as applicable:
WavelengthDispersiveX-RayFluorescenceSpectrometry
4.1.1 Grade number (Section 1);
E1409 Test Method for Determination of Oxygen and Nitro-
4.1.2 Product classification (Section 3);
gen in Titanium and TitaniumAlloys by Inert Gas Fusion
4.1.3 Chemistry (Table 1);
E1447 Test Method for Determination of Hydrogen in Tita-
4.1.4 Condition required for Grades 9, 18, 20, 21, 23, 28,
nium and Titanium Alloys by Inert Gas Fusion Thermal
and 29;
Conductivity/Infrared Detection Method
4.1.5 Mechanical properties (Table 2);
E1941 Test Method for Determination of Carbon in Refrac-
4.1.6 Marking (Section 16);
tory and Reactive Metals andTheirAlloys by Combustion
4.1.7 Finish (Section 8);
Analysis
4.1.8 Packaging (Section 16);
E2371 Test Method for Analysis of Titanium and Titanium
4.1.9 Required reports (Section 15); and
Alloys by Direct Current Plasma and Inductively Coupled
4.1.10 Disposition of rejected material (Section 14).
Plasma Atomic Emission Spectrometry (Performance-
Based Test Methodology)
5. Chemical Composition
E2626 Guide for Spectrometric Analysis of Reactive and
5.1 The grades of titanium and titanium alloy metal covered
by this specification shall conform to the requirements as to
chemical composition prescribed in Table 1.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on The last approved version of this historical standard is referenced on
the ASTM website. www.astm.org.
B348/B348M−21
TABLE 1 Chemical Requirements
A,B,C,D,E
Composition, Weight Percent
Other Other
Oxygen Iron Elements,Elements,
UNS Carbon, range Nitrogen,Hydrogen, range max. max.
Grade Number max. or max. max. max. or max. Aluminum Vanadium Palladium Ruthenium Nickel Molybdenum Chromium Cobalt Zirconium Niobium Tin Silicon each total
1 R50250 0.08 0.18 0.03 0.015 0.20 - - - - - - - - - - - - - - - - - - - - - - - - 0.1 0.4
2/2H R50400 0.08 0.25 0.03 0.015 0.30 - - - - - - - - - - - - - - - - - - - - - - - - 0.1 0.4
3 R50550 0.08 0.35 0.05 0.015 0.30 - - - - - - - - - - - - - - - - - - - - - - - - 0.1 0.4
4 R50700 0.08 0.40 0.05 0.015 0.50 - - - - - - - - - - - - - - - - - - - - - - - - 0.1 0.4
5 R56400 0.08 0.20 0.05 0.015 0.40 5.5- 3.5- -- -- -- -- -- -- -- -- -- -- 0.1 0.4
6.75 4.5
6 R54520 0.08 0.20 0.03 0.015 0.50 4.0- -- -- -- -- -- -- -- -- -- 2.0- -- 0.1 0.4
6.0 3.0
7/7H R52400 0.08 0.25 0.03 0.015 0.30 - - - - 0.12- -- -- -- -- -- -- -- -- -- 0.1 0.4
0.25
9 R56320 0.08 0.15 0.03 0.015 0.25 2.5- 2.0- -- -- -- -- -- -- -- -- -- -- 0.1 0.4
3.5 3.0
11 R52250 0.08 0.18 0.03 0.015 0.20 - - - - 0.12- -- -- -- -- -- -- -- -- -- 0.1 0.4
0.25
12 R53400 0.08 0.25 0.03 0.015 0.30 - - - - - - - - 0.6- 0.2- -- -- -- -- -- -- 0.1 0.4
0.9 0.4
13 R53413 0.08 0.10 0.03 0.015 0.20 - - - - - - 0.04- 0.4- -- -- -- -- -- -- -- 0.1 0.4
0.06 0.6
14 R53414 0.08 0.15 0.03 0.015 0.30 - - - - - - 0.04- 0.4- -- -- -- -- -- -- -- 0.1 0.4
0.06 0.6
15 R53415 0.08 0.25 0.05 0.015 0.30 - - - - - - 0.04- 0.4- -- -- -- -- -- -- -- 0.1 0.4
0.06 0.6
16/16H R52402 0.08 0.25 0.03 0.015 0.30 - - - - 0.04- -- -- -- -- -- -- -- -- -- 0.1 0.4
0.08
17 R52252 0.08 0.18 0.03 0.015 0.20 - - - - 0.04- -- -- -- -- -- -- -- -- -- 0.1 0.4
0.08
18 R56322 0.08 0.15 0.03 0.015 0.25 2.5- 2.0- 0.04- -- -- -- -- -- -- -- -- -- 0.1 0.4
3.5 3.0 0.08
19 R58640 0.05 0.12 0.03 0.02 0.30 3.0- 7.5- -- -- -- 3.5- 5.5- - - 3.5- -- -- -- 0.15 0.4
4.0 8.5 4.5 6.5 4.5
20 R58645 0.05 0.12 0.03 0.02 0.30 3.0- 7.5- 0.04- -- -- 3.5- 5.5- - - 3.5- -- -- -- 0.15 0.4
4.0 8.5 0.08 4.5 6.5 4.5
21 R58210 0.05 0.17 0.03 0.015 0.40 2.5- -- -- -- -- 14.0- -- -- -- 2.2- - - 0.15- 0.1 0.4
3.5 16.0 3.2 0.25
23 R56407 0.08 0.13 0.03 0.0125 0.25 5.5- 3.5- -- -- -- -- -- -- -- -- -- -- 0.1 0.4
6.5 4.5
24 R56405 0.08 0.20 0.05 0.015 0.40 5.5- 3.5- 0.04- -- -- -- -- -- -- -- -- -- 0.1 0.4
6.75 4.5 0.08
25 R56403 0.08 0.20 0.05 0.015 0.40 5.5- 3.5- 0.04- - - 0.3- -- -- -- -- -- -- -- 0.1 0.4
6.75 4.5 0.08 0.8
26/26H R52404 0.08 0.25 0.03 0.015 0.30 - - - - - - 0.08- -- -- -- -- -- -- -- -- 0.1 0.4
0.14
27 R52254 0.08 0.18 0.03 0.015 0.20 - - - - - - 0.08- -- -- -- -- -- -- -- -- 0.1 0.4
0.14
28 R56323 0.08 0.15 0.03 0.015 0.25 2.5- 2.0- - - 0.08- -- -- -- -- -- -- -- -- 0.1 0.4
3.5 3.0 0.14
29 R56404 0.08 0.13 0.03 0.0125 0.25 5.5- 3.5- - - 0.08- -- -- -- -- -- -- -- -- 0.1 0.4
6.5 4.5 0.14
30 R53530 0.08 0.25 0.03 0.015 0.30 - - - - 0.04- -- -- -- -- 0.20- -- -- -- -- 0.1 0.4
0.08 0.80
31 R53532 0.08 0.35 0.05 0.015 0.30 - - - - 0.04- -- -- -- -- 0.20- -- -- -- -- 0.1 0.4
0.08 0.80
B348/B348M−21
TABLE1 Continued
A,B,C,D,E
Composition, Weight Percent
Other Other
Oxygen Iron Elements,Elements,
UNS Carbon, range Nitrogen,Hydrogen, range max. max.
Grade Number max. or max. max. max. or max. Aluminum Vanadium Palladium Ruthenium Nickel Molybdenum Chromium Cobalt Zirconium Niobium Tin Silicon each total
32 R55111 0.08 0.11 0.03 0.015 0.25 4.5- 0.6- -- -- -- 0.6- -- -- 0.6- - - 0.6- 0.06- 0.1. 0.4
5.5 1.4 1.2 1.4 1.4 0.14
33 R53442 0.08 0.25 0.03 0.015 0.30 - - - - 0.01- 0.02- 0.35- - - 0.1- -- -- -- -- -- 0.1 0.4
0.02 0.04 0.55 0.2
34 R53445 0.08 0.35 0.05 0.015 0.30 - - - - 0.01- 0.02- 0.35- - - 0.1- -- -- -- -- -- 0.1 0.4
0.02 0.04 0.55 0.2
35 R56340 0.08 0.25 0.05 0.015 0.20- 4.0- 1.1- -- -- -- 1.5- -- -- -- -- -- 0.20- 0.1 0.4
0.80 5.0 2.1 2.5 0.40
36 R58450 0.04 0.16 0.03 0.015 0.03 - - - - - - - - - - - - - - - - - - 42.0- -- -- 0.1 0.4
47.0
37 R52815 0.08 0.25 0.03 0.015 0.30 1.0- -- -- -- -- -- -- -- -- -- -- -- 0.1 0.4
2.0
38 R54250 0.08 0.20- 0.03 0.015 1.2- 3.5- 2.0- -- -- -- -- -- -- -- -- -- -- 0.1 0.4
0.30 1.8 4.5 3.0
41 R56461 0.10 0.30 0.05 0.015 0.4- 5.5- -- -- -- -- -- -- -- -- -- -- -- 0.1 0.4
1.5 6.5
A
At minimum, the analysis of samples from the top and bottom of the ingot or of the product 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 elements not listed in this specification.

B348/B348M−21
A
TABLE 2 Tensile Requirements
Tensile Strength, min Yield Strength (0.2 % Offset) min or range Elongation in 4D,4W Reduction of Area,
Grade
or 2 inch min, % min %
ksi MPa ksi MPa
1 35 240 20 138 24 30
2 50 345 40 275 20 30
B,C
2H 58 400 40 275 20 30
3 65 450 55 380 18 30
4 80 550 70 483 15 25
5 130 895 120 828 10 25
6 120 828 115 795 10 25
7 50 345 40 275 20 30
B,C
7H 58 400 40 275 20 30
9 90 620 70 483 15 25
D
9 90 620 70 483 12 25
11 35 240 20 138 24 30
12 70 483 50 345 18 25
13 40 275 25 170 24 30
14 60 410 40 275 20 30
15 70 483 55 380 18 25
16 50 345 40 275 20 30
B,C
16H 58 400 40 275 20 30
17 35 240 20 138 24 30
18 90 620 70 483 15 25
D
18 90 620 70 483 12 20
E
19 115 793 110 759 15 25
F
19 135 930 130 to 159 897 to 1096 10 20
G
19 165 1138 160 to 185 1104 to 1276 5 20
E
20 115 793 110 759 15 25
F
20 135 930 130 to 159 897 to 1096 10 20
G
20 165 1138 160 to 185 1104 to 1276 5 20
E
21 115 793 110 759 15 35
F
21 140 966 130 to 159 897 to 1096 10 30
G
21 170 1172 160 to 185 1104 to 1276 8 20
23 120 828 110 759 10 25
D H I
23 120 828 110 759 7.5 ,6.0 15
24 130 895 120 828 10 25
25 130 895 120 828 10 25
26 50 345 40 275 20 30
B,C
26H 58 400 40 275 20 30
27 35 240 20 138 24 30
28 90 620 70 483 15 25
D
28 90 620 70 483 12 20
29 120 828 110 759 10 25
D H I
29 120 828 110 759 7.5 ,6.0 15
30 50 345 40 275 20 30
31 65 450 55 380 18 30
32 100 689 85 586 10 25
33 50 345 40 275 20 30
34 65 450 55 380 18 30
35 130 895 120 828 5 20
36 65 450 60 to 95 410 to 655 10 .
37 50 345 31 215 20 30
38 130 895 115 794 10 25
41 130 895 120 825 10 25
A 2 2
These properties apply to longitudinal sections up to 3 in. [76 mm] in thickness with a maximum of 10 in. [64.5 cm ]. Mechanical properties of larger sections shall be
negotiated between the manufacturer and purchaser.
B
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. Grade 2H, 7H, 16H, and 26H are intended primarily for pressure vess
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: B348/B348M − 19 B348/B348M − 21
Standard Specification for
Titanium and Titanium Alloy Bars and Billets
This standard is issued under the fixed designation B348/B348M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.
A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope*
1.1 This specification covers annealed titanium and titanium alloy bars and billets as follows:
1.1.1 Grade 1—UNS R50250. Unalloyed titanium,
1.1.2 Grade 2—UNS R50400. Unalloyed titanium,
1.1.2.1 Grade 2H—UNS R50400. Unalloyed titanium (Grade 2 with 58 ksi [400 MPa] minimum UTS),
1.1.3 Grade 3—UNS R50550. Unalloyed titanium,
1.1.4 Grade 4—UNS R50700. Unalloyed titanium,
1.1.5 Grade 5—UNS R56400. Titanium alloy (6 % aluminum, 4 % vanadium),
1.1.6 Grade 6—UNS R54520. Titanium alloy (5 % aluminum, 2.5 % tin),
1.1.7 Grade 7—UNS R52400. Unalloyed titanium plus 0.12 to 0.25 % palladium,
1.1.7.1 Grade 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 9—UNS R56320. Titanium alloy (3 % aluminum, 2.5 % vanadium),
1.1.9 Grade 11—UNS R52250. Unalloyed titanium plus 0.12 to 0.25 % palladium,
1.1.10 Grade 12—UNS R53400. Titanium alloy (0.3 % molybdenum, 0.8 % nickel),
1.1.11 Grade 13—UNS R53413. Titanium alloy (0.5 % nickel, 0.05 % ruthenium),
1.1.12 Grade 14—UNS R53414. Titanium alloy (0.5 % nickel, 0.05 % ruthenium),
This specification is under the jurisdiction of ASTM Committee B10 on Reactive and Refractory Metals and Alloys and is the direct responsibility of Subcommittee
B10.01 on Titanium.
Current edition approved Nov. 1, 2019Nov. 1, 2021. Published November 2019December 2021. Originally approved in 1959. Last previous edition approved in 20132019
as B348 – 13.B348/B348M – 19. DOI: 10.1520/B0348_B0348M-19.10.1520/B0348_B0348M-21.
For ASME Boiler and Pressure Vessel Code applications see related Specification SB-348 in Section II of that Code.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
B348/B348M − 21
1.1.13 Grade 15—UNS R53415. Titanium alloy (0.5 % nickel, 0.05 % ruthenium),
1.1.14 Grade 16—UNS R52402. Unalloyed titanium plus 0.04 to 0.08 % palladium,
1.1.14.1 Grade 16H—UNS R52402. Unalloyed titanium plus 0.04 to 0.08 % palladiumm (Grade 16 with 58 ksi [400 MPa]
minimum UTS),
1.1.15 Grade 17—UNS R52252. Unalloyed titanium plus 0.04 to 0.08 % palladium,
1.1.16 Grade 18—UNS R56322. Titanium alloy (3 % aluminum, 2.5 % vanadium) plus 0.04 to 0.08 % palladium,
1.1.17 Grade 19—UNS R58640. Titanium alloy (3 % aluminum, 8 % vanadium, 6 % chromium, 4 % zirconium, 4 %
molybdenum),
1.1.18 Grade 20—UNS R58645. Titanium alloy (3 % aluminum, 8 % vanadium, 6 % chromium, 4 % zirconium, 4 %
molybdenum) plus 0.04 %–0.08 % palladium,
1.1.19 Grade 21—UNS R58210. Titanium alloy (15 % molybdenum, 3 % aluminum, 2.7 % niobium, 0.25 % silicon),
1.1.20 Grade 23—UNS R56407. Titanium alloy (6 % aluminum, 4 % vanadium with extra low interstitial elements, ELI),
1.1.21 Grade 24—UNS R56405. Titanium alloy (6 % aluminum, 4 % vanadium) plus 0.04 % to 0.08 % palladium,
1.1.22 Grade 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 26—UNS R52404. Unalloyed titanium plus 0.08 to 0.14 % ruthenium,
1.1.23.1 Grade 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 27—UNS R52254. Unalloyed titanium plus 0.08 to 0.14 % ruthenium,
1.1.25 Grade 28—UNS R56323. Titanium alloy (3 % aluminum, 2.5 % vanadium plus 0.08–0.14 % ruthenium),
1.1.26 Grade 29—UNS R56404. Titanium alloy (6 % aluminum, 4 % vanadium, extra low interstitial, ELI plus 0.08 to 0.14 %
ruthenium),
1.1.27 Grade 30—UNS R53530. Titanium alloy (0.3 % cobalt, 0.05 % palladium),
1.1.28 Grade 31—UNS R53532. Titanium alloy (0.3 % cobalt, 0.05 % palladium),
1.1.29 Grade 32—UNS R55111. Titanium alloy (5 % aluminum, 1 % tin, 1 % zirconium, 1 % vanadium, 0.8 % molybdenum),
1.1.30 Grade 33—UNS R53442. Titanium alloy (0.4 % nickel, 0.015 % palladium, 0.025 % ruthenium, 0.15 % chromium),
1.1.31 Grade 34—UNS R53445. Titanium alloy (0.4 % nickel, 0.015 % palladium, 0.025 % ruthenium, 0.15 % chromium),
1.1.32 Grade 35—UNS R56340. Titanium alloy (4.5 % aluminum, 2 % molybdenum, 1.6 % vanadium, 0.5 % iron, 0.3 % silicon),
1.1.33 Grade 36—UNS R58450. Titanium alloy (45 % niobium),
1.1.34 Grade 37—UNS R52815. Titanium alloy (1.5 % aluminum), and
1.1.35 Grade 38—UNS R54250. Titanium alloy (4 % aluminum, 2.5 % vanadium, 1.5 % iron).iron), and
1.1.36 Grade 41—UNS R56461. Titanium alloy (6 % aluminum, 1 % iron).
B348/B348M − 21
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.
1.2 The values state in either inch-pound units or SI units are to be regarded separately as standard. The values stated in each
system are not exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two
systems may result in nonconformance with the specification.
1.3 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 ASTM Standards:
E8/E8M 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 Wavelength Dispersive X-Ray Fluorescence Spectrometry
E1409 Test Method for Determination of Oxygen and Nitrogen in Titanium and Titanium Alloys by Inert Gas Fusion
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 (Withdrawn 2017)
E2994 Test Method for Analysis of Titanium and Titanium Alloys by Spark Atomic Emission Spectrometry and Glow Discharge
Atomic Emission Spectrometry (Performance-Based Method)
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3.1.1 bar, n—a hot rolled, forged, extruded or cold worked semi-finished solid section product whose cross sectional area is equal
2 2
to or less than 16 in. [10 323 mm ]; rectangular bar must be less than or equal to 10 in. [254 mm] in width and greater than 0.1875
in. [4.8 mm] in thickness.
3.1.1.1 Discussion—
Extruded bar has been approved for use on unalloyed titanium grades 1, 2, 3 and 4 only. Other grades may be produced via the
extrusion process with agreement between the producer and the purchaser.
3.1.2 billet, n—a solid semi-finished section hot worked or forged from an ingot, with a cross sectional area greater than 16 in.
[10 323 mm ] whose width is less than five times its thickness.
3.1.3 heat analysis—analysis, n—chemical determination based on analysis of ingot or alternate (see Table 1 footnote A, and 9.2);
check analysis limits do not apply for Heat Analysis/Producer Ingot Analysis.
3.1.4 product analysis—analysis, n—an analysis based on semi-finished or final product; the purchaser may apply check analysis
limits to determine compliance with the specification; check analysis limits are not for producer’s use at producer ingot acceptance.
3.1.5 check analysis limits—limits, n—Table 3, Permissible Variations in Product Analysis: Percentages above and below those
listed in Table 1, when tested on product, by or for the purchaser, or acceptable to purchaser to show compliance with a given
specification.
4. Ordering Information
4.1 Orders for material under this specification shall include the following information as applicable:
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
The last approved version of this historical standard is referenced on www.astm.org.
B348/B348M − 21
TABLE 1 Chemical Requirements
A,B,C,D,E
Composition, Weight Percent
Other Other
Oxygen Iron Elements,Elements,
UNS Carbon, range Nitrogen, Hydrogen, range max. max.
Grade Number max. or max. max. max. or max. Aluminum Vanadium Palladium Ruthenium Nickel Molybdenum Chromium Cobalt Zirconium Niobium Tin Silicon each total
1 R50250 0.08 0.18 0.03 0.015 0.20 - - - - - - - - - - - - - - - - - - - - - - - - 0.1 0.4
2/2H R50400 0.08 0.25 0.03 0.015 0.30 - - - - - - - - - - - - - - - - - - - - - - - - 0.1 0.4
3 R50550 0.08 0.35 0.05 0.015 0.30 - - - - - - - - - - - - - - - - - - - - - - - - 0.1 0.4
4 R50700 0.08 0.40 0.05 0.015 0.50 - - - - - - - - - - - - - - - - - - - - - - - - 0.1 0.4
5 R56400 0.08 0.20 0.05 0.015 0.40 5.5- 3.5- - - - - - - - - - - - - - - - - - - - - 0.1 0.4
6.75 4.5
6 R54520 0.08 0.20 0.03 0.015 0.50 4.0- - - - - - - - - - - - - - - - - - - 2.0- - - 0.1 0.4
6.0 3.0
7/7H R52400 0.08 0.25 0.03 0.015 0.30 - - - - 0.12- - - - - - - - - - - - - - - - - - - 0.1 0.4
0.25
9 R56320 0.08 0.15 0.03 0.015 0.25 2.5- 2.0- - - - - - - - - - - - - - - - - - - - - 0.1 0.4
3.5 3.0
11 R52250 0.08 0.18 0.03 0.015 0.20 - - - - 0.12- - - - - - - - - - - - - - - - - - - 0.1 0.4
0.25
12 R53400 0.08 0.25 0.03 0.015 0.30 - - - - - - - - 0.6- 0.2- - - - - - - - - - - - - 0.1 0.4
0.9 0.4
13 R53413 0.08 0.10 0.03 0.015 0.20 - - - - - - 0.04- 0.4- - - - - - - - - - - - - - - 0.1 0.4
0.06 0.6
14 R53414 0.08 0.15 0.03 0.015 0.30 - - - - - - 0.04- 0.4- - - - - - - - - - - - - - - 0.1 0.4
0.06 0.6
15 R53415 0.08 0.25 0.05 0.015 0.30 - - - - - - 0.04- 0.4- - - - - - - - - - - - - - - 0.1 0.4
0.06 0.6
16/16H R52402 0.08 0.25 0.03 0.015 0.30 - - - - 0.04- - - - - - - - - - - - - - - - - - - 0.1 0.4
0.08
17 R52252 0.08 0.18 0.03 0.015 0.20 - - - - 0.04- - - - - - - - - - - - - - - - - - - 0.1 0.4
0.08
18 R56322 0.08 0.15 0.03 0.015 0.25 2.5- 2.0- 0.04- - - - - - - - - - - - - - - - - - - 0.1 0.4
3.5 3.0 0.08
19 R58640 0.05 0.12 0.03 0.02 0.30 3.0- 7.5- - - - - - - 3.5- 5.5- - - 3.5- - - - - - - 0.15 0.4
4.0 8.5 4.5 6.5 4.5
20 R58645 0.05 0.12 0.03 0.02 0.30 3.0- 7.5- 0.04- - - - - 3.5- 5.5- - - 3.5- - - - - - - 0.15 0.4
4.0 8.5 0.08 4.5 6.5 4.5
21 R58210 0.05 0.17 0.03 0.015 0.40 2.5- - - - - - - - - 14.0- - - - - - - 2.2- - - 0.15- 0.1 0.4
3.5 16.0 3.2 0.25
23 R56407 0.08 0.13 0.03 0.0125 0.25 5.5- 3.5- - - - - - - - - - - - - - - - - - - - - 0.1 0.4
6.5 4.5
24 R56405 0.08 0.20 0.05 0.015 0.40 5.5- 3.5- 0.04- - - - - - - - - - - - - - - - - - - 0.1 0.4
6.75 4.5 0.08
25 R56403 0.08 0.20 0.05 0.015 0.40 5.5- 3.5- 0.04- - - 0.3- - - - - - - - - - - - - - - 0.1 0.4
6.75 4.5 0.08 0.8
26/26H R52404 0.08 0.25 0.03 0.015 0.30 - - - - - - 0.08- - - - - - - - - - - - - - - - - 0.1 0.4
0.14
27 R52254 0.08 0.18 0.03 0.015 0.20 - - - - - - 0.08- - - - - - - - - - - - - - - - - 0.1 0.4
0.14
28 R56323 0.08 0.15 0.03 0.015 0.25 2.5- 2.0- - - 0.08- - - - - - - - - - - - - - - - - 0.1 0.4
3.5 3.0 0.14
29 R56404 0.08 0.13 0.03 0.0125 0.25 5.5- 3.5- - - 0.08- - - - - - - - - - - - - - - - - 0.1 0.4
6.5 4.5 0.14
30 R53530 0.08 0.25 0.03 0.015 0.30 - - - - 0.04- - - - - - - - - 0.20- - - - - - - - - 0.1 0.4
0.08 0.80
31 R53532 0.08 0.35 0.05 0.015 0.30 - - - - 0.04- - - - - - - - - 0.20- - - - - - - - - 0.1 0.4
0.08 0.80
B348/B348M − 21
TABLE 1 Continued
A,B,C,D,E
Composition, Weight Percent
Other Other
Oxygen Iron Elements,Elements,
UNS Carbon, range Nitrogen, Hydrogen, range max. max.
Grade Number max. or max. max. max. or max. Aluminum Vanadium Palladium Ruthenium Nickel Molybdenum Chromium Cobalt Zirconium Niobium Tin Silicon each total
32 R55111 0.08 0.11 0.03 0.015 0.25 4.5- 0.6- - - - - - - 0.6- - - - - 0.6- - - 0.6- 0.06- 0.1. 0.4
5.5 1.4 1.2 1.4 1.4 0.14
33 R53442 0.08 0.25 0.03 0.015 0.30 - - - - 0.01- 0.02- 0.35- - - 0.1- - - - - - - - - - - 0.1 0.4
0.02 0.04 0.55 0.2
34 R53445 0.08 0.35 0.05 0.015 0.30 - - - - 0.01- 0.02- 0.35- - - 0.1- - - - - - - - - - - 0.1 0.4
0.02 0.04 0.55 0.2
35 R56340 0.08 0.25 0.05 0.015 0.20- 4.0- 1.1- - - - - - - 1.5- - - - - - - - - - - 0.20- 0.1 0.4
0.80 5.0 2.1 2.5 0.40
36 R58450 0.04 0.16 0.03 0.015 0.03 - - - - - - - - - - - - - - - - - - 42.0- - - - - 0.1 0.4
47.0
37 R52815 0.08 0.25 0.03 0.015 0.30 1.0- - - - - - - - - - - - - - - - - - - - - - - 0.1 0.4
2.0
38 R54250 0.08 0.20- 0.03 0.015 1.2- 3.5- 2.0- - - - - - - - - - - - - - - - - - - - - 0.1 0.4
0.30 1.8 4.5 3.0
41 R56461 0.10 0.30 0.05 0.015 0.4- 5.5- - - - - - - - - - - - - - - - - - - - - - - 0.1 0.4
1.5 6.5
A
At minimum, the analysis of samples from the top and bottom of the ingot or of the product 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 elements not listed in this specification.

B348/B348M − 21
A
TABLE 2 Tensile Requirements
Tensile Strength, min Yield Strength (0.2 % Offset) min or range Elongation in 4D, 4 W Reduction of Area,
Grade
or 2 inch min, % min %
ksi MPa ksi MPa
1 35 240 20 138 24 30
2 50 345 40 275 20 30
B,C
2H 58 400 40 275 20 30
3 65 450 55 380 18 30
4 80 550 70 483 15 25
5 130 895 120 828 10 25
6 120 828 115 795 10 25
7 50 345 40 275 20 30
B,C
7H 58 400 40 275 20 30
9 90 620 70 483 15 25
D
9 90 620 70 483 12 25
11 35 240 20 138 24 30
12 70 483 50 345 18 25
13 40 275 25 170 24 30
14 60 410 40 275 20 30
15 70 483 55 380 18 25
16 50 345 40 275 20 30
B,C
16H 58 400 40 275 20 30
17 35 240 20 138 24 30
18 90 620 70 483 15 25
D
18 90 620 70 483 12 20
E
19 115 793 110 759 15 25
F
19 135 930 130 to 159 897 to 1096 10 20
G
19 165 1138 160 to 185 1104 to 1276 5 20
E
20 115 793 110 759 15 25
F
20 135 930 130 to 159 897 to 1096 10 20
G
20 165 1138 160 to 185 1104 to 1276 5 20
E
21 115 793 110 759 15 35
F
21 140 966 130 to 159 897 to 1096 10 30
G
21 170 1172 160 to 185 1104 to 1276 8 20
23 120 828 110 759 10 25
D H I
23 120 828 110 759 7.5 , 6.0 15
24 130 895 120 828 10 25
25 130 895 120 828 10 25
26 50 345 40 275 20 30
B,C
26H 58 400 40 275 20 30
27 35 240 20 138 24 30
28 90 620 70 483 15 25
D
28 90 620 70 483 12 20
29 120 828 110 759 10 25
D H I
29 120 828 110 759 7.5 , 6.0 15
30 50 345 40 275 20 30
31 65 450 55 380 18 30
32 100 689 85 586 10 25
33 50 345 40 275 20 30
34 65 450 55 380 18 30
35 130 895 120 828 5 20
36 65 450 60 to 95 410 to 655 10 .
37 50 345 31 215 20 30
38 130 895 115 794 10 25
41 130 895 120 825 10 25
A 2 2
These properties apply to longitudinal sections up to 3 in. [76 mm] in thickness with a maximum of 10 in. [64.5 cm ]. Mechanical properties of larger sections shall be
negotiated between the manufacturer and purchaser.
B
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. Grade 2H, 7H, 16H, and 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 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 For product section or wall thickness values $ 1.0 $1.0 in.
B348/B348M − 21
TABLE 3 Permissible Variations in Product Analysis
Product Analysis Permissible Variation
Element Limits, max or in Prod
...