ASTM B861-24

Standard Specification for Titanium and Titanium Alloy Seamless Pipe

ABSTRACT
This specification covers the requirements for 34 grades of titanium and titanium alloy seamless pipe intended for general corrosion resisting and elevated temperature service. Alloys may be supplied in the following conditions: Grades 5, 23, 24, 25, 29, 35, or 36 – annealed or aged; Grades 9, 18, 28, or 38 – cold-worked and stress-relieved or annealed; Grades 9, 18, 23, 28, or 29 – transformed-beta condition; and Grades 19, 20, or 21 – solution-treated or solution-treated and aged. The grades shall conform to the required chemical composition for nitrogen, carbon, hydrogen, iron, oxygen, aluminum, vanadium, tin, ruthenium, palladium, chromium, nickel, niobium, zirconium, silicon, and titanium. Chemical analysis and product analysis shall be performed. Mechanical requirements shall conform to the required room temperature values for tensile strength, yield strength, and elongation. The following shall also be performed: tension, flattening, bend, and hydrostatic tests.
SCOPE
1.1 This specification covers the requirements for 34 grades of titanium and titanium alloy seamless pipe intended for general corrosion resisting and elevated temperature service 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 5—UNS R56400. Titanium alloy (6 % aluminum, 4 % vanadium),  
1.1.5 Grade 7—UNS R52400. Unalloyed titanium plus 0.12 % to 0.25 % palladium,
1.1.5.1 Grade 7H—UNS R52400. Unalloyed titanium plus 0.12 % to 0.25 % palladium (Grade 7 with 58 ksi (400 MPa) minimum UTS),  
1.1.6 Grade 9—UNS R56320. Titanium alloy (3 % aluminum, 2.5 % vanadium),  
1.1.7 Grade 11—UNS R52250. Unalloyed titanium plus 0.12 % to 0.25 % palladium,  
1.1.8 Grade 12—UNS R53400. Titanium alloy (0.3 % molybdenum, 0.8 % nickel),  
1.1.9 Grade 13—UNS R53413. Titanium alloy (0.5 % nickel, 0.05 % ruthenium),  
1.1.10 Grade 14—UNS R53414. Titanium alloy (0.5 % nickel, 0.05 % ruthenium),  
1.1.11 Grade 15—UNS R53415. Titanium alloy (0.5 % nickel, 0.05 % ruthenium),  
1.1.12 Grade 16—UNS R52402. Unalloyed titanium plus 0.04 % to 0.08 % palladium,
1.1.12.1 Grade 16H—UNS R52402. Unalloyed titanium plus 0.04 % to 0.08 % palladium (Grade 16 with 58 ksi (400 MPa) minimum UTS),  
1.1.13 Grade 17—UNS R52252. Unalloyed titanium plus 0.04 % to 0.08 % palladium,  
1.1.14 Grade 18—UNS R56322. Titanium alloy (3 % aluminum, 2.5 % vanadium plus 0.04 % to 0.08 % palladium),  
1.1.15 Grade 19—UNS R58640. Titanium alloy (3 % aluminum, 8 % vanadium, 6 % chromium, 4 % zirconium, 4 % molybdenum),  
1.1.16 Grade 20—UNS R58645. Titanium alloy (3 % aluminum, 8 % vanadium, 6 % chromium, 4 % zirconium, 4 % molybdenum) plus 0.04 % to 0.08 % palladium,  
1.1.17 Grade 21—UNS R58210. Titanium alloy (15 % molybdenum, 3 % aluminum, 2.7 % niobium, 0.25 % silicon),  
1.1.18 Grade 23—UNS R56407. Titanium alloy (6 % aluminum, 4 % vanadium, extra low interstitial, ELI),  
1.1.19 Grade 24—UNS R56405. Titanium alloy (6 % aluminum, 4 % vanadium) plus 0.04 % to 0.08 % palladium,  
1.1.20 Grade 25—UNS R56403. Titanium alloy (6 % aluminum, 4 % vanadium) plus 0.3 % to 0.8 % nickel and 0.04 % to 0.08 % palladium,  
1.1.21 Grade 26—UNS R52404. Unalloyed titanium plus 0.08 % to 0.14 % ruthenium,
1.1.21.1 Grade 26H—UNS R52404. Unalloyed titanium plus 0.08 % to 0.14 % ruthenium (Grade 26 with 58 ksi (400 MPa) minimum UTS),  
1.1.22 Grade 27—UNS R52254. Unalloyed titanium plus 0.08 % to 0.14 % ruthenium,  
1.1.23 Grade 28—UNS R56323. Titanium alloy (3 % aluminum, 2.5 % vanadium plus 0.08 % to 0.14 % ruthenium),  
1.1.24 Grade 29—UNS R56404. Titanium alloy (6 % aluminum, 4 % vanadium, extra low interstitial, ELI plus 0.08 % to 0.14 % ruthenium),  
1.1.25 Grade 33—UNS R53442. Titanium alloy (0.4 % nickel, 0.015 % palladium, 0.025 % ruthenium, 0.15 % chromium...

General Information

• Status: Published
• Publication Date: 31-Mar-2024
• ICS: 77.150.50 - Titanium products
• Technical Committee: B10 - Reactive and Refractory Metals and Alloys
• Drafting Committee: B10.01 - Titanium

Relations

• Replaces: ASTM B861-19 - Standard Specification for Titanium and Titanium Alloy Seamless Pipe
• Effective Date: 01-Apr-2024
• Referred By: ASTM F1155-10(2019) - Standard Practice for Selection and Application of Piping System Materials
• Effective Date: 01-Apr-2024
• Referred By: ASTM B363-23 - Standard Specification for Seamless and Welded Unalloyed Titanium and Titanium Alloy Welding Fittings
• Effective Date: 01-Apr-2024

Overview

ASTM B861-24: Standard Specification for Titanium and Titanium Alloy Seamless Pipe is an internationally recognized standard published by ASTM International. This specification covers the requirements for 34 grades of seamless pipe manufactured from titanium and titanium alloys. Designed for use in applications requiring both general corrosion resistance and performance at elevated temperatures, ASTM B861-24 ensures material quality, dimensional consistency, and mechanical reliability. The standard details requirements for chemical composition, mechanical properties, testing, and product marking, supporting industries where material performance is critical.

Key Topics

• Grades Covered: The standard includes 34 titanium and titanium alloy grades (e.g., Grades 1, 5, 7, 9, 23, 29, etc.). Each grade is specified by its unique combination of alloying elements to suit a range of performance needs.
• Product Scope: Applies to seamless pipe intended for corrosion-resistant and high-temperature service. Material may be supplied in annealed, aged, cold-worked, stress-relieved, solution-treated, or transformed-beta conditions, depending on the grade.
• Chemical Composition: Strict limits on elements such as nitrogen, carbon, hydrogen, iron, oxygen, aluminum, vanadium, palladium, ruthenium, nickel, molybdenum, chromium, niobium, zirconium, silicon, and titanium. Residual elements are also controlled to ensure pipe integrity.
• Mechanical Properties: Specifies minimum tensile strength, yield strength, and elongation at room temperature for each grade. Pipes must also pass tension, flattening, bend, and hydrostatic tests.
• Dimensions and Tolerances: References standard pipe dimensions in line with ANSI/ASME B36.19M and B36.10. Details permissible variations in diameter, thickness, and length.
• Testing and Inspection: Outlines routine testing requirements, including mechanical testing (tension and flattening), hydrostatic testing, and product analysis. Inspection must occur before shipment and test reports must accompany each order.
• Product Marking and Traceability: Each pipe is marked with manufacturer ID, ASTM designation, grade, size, schedule, and lot number to ensure full traceability.

Applications

ASTM B861-24 titanium and titanium alloy seamless pipe offers significant practical value for demanding applications, including:

• Chemical Processing: Provides excellent corrosion resistance for pipes handling aggressive chemicals.
• Power Generation: Suitable for use in heat exchangers, condensers, and piping systems operating at elevated temperatures.
• Oil and Gas: Delivers reliable performance in offshore and subsea pipelines where strength and corrosion resistance are essential.
• Aerospace: Used for hydraulic lines and structural piping requiring low weight and high strength.
• Marine and Desalination: Withstands saltwater environments and is used for long-lasting, maintenance-free piping solutions.

The ability to select from numerous grades allows specifiers to match the alloy properties with specific application requirements, supporting optimized material performance and cost efficiency.

Related Standards

• ASTM B338: Specification for seamless and welded titanium and titanium alloy tubes for condensers and heat exchangers.
• ASTM B337: Specification for seamless and welded titanium and titanium alloy pipe.
• ASTM B600: Guide for descaling and cleaning titanium and titanium alloy surfaces.
• ASTM E8/E8M: Test methods for tension testing of metallic materials.
• ASTM E539, E1409, E1447, E1941, E2371, E2994: Methods for chemical analysis of titanium alloys.
• ANSI/ASME B36.10 & B36.19M: Standards for dimensions of steel and stainless steel pipes.
• ASTM A370: Test methods and definitions for mechanical testing of steel products.

Practical Value

ASTM B861-24 offers a trusted framework for the manufacture and selection of titanium seamless pipe, ensuring reliability, safety, and compliance in critical industries. Adhering to this standard helps manufacturers, purchasers, and fabricators achieve consistent product quality, streamline procurement, and meet regulatory requirements for corrosion-resistant, high-temperature titanium pipe applications.

Keywords: ASTM B861, titanium seamless pipe, titanium alloy pipe, corrosion resistance, high temperature service, pipe specification, ASTM titanium standard, pipe testing, titanium pipe grades.

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: B861 − 24
Standard Specification for
Titanium and Titanium Alloy Seamless Pipe
This standard is issued under the fixed designation B861; 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 1.1.14 Grade 18—UNS R56322. Titanium alloy (3 %
aluminum, 2.5 % vanadium plus 0.04 % to 0.08 % palladium),
1.1 This specification covers the requirements for 34 grades
1.1.15 Grade 19—UNS R58640. Titanium alloy (3 %
of titanium and titanium alloy seamless pipe intended for
aluminum, 8 % vanadium, 6 % chromium, 4 % zirconium, 4 %
general corrosion resisting and elevated temperature service as
molybdenum),
follows:
1.1.16 Grade 20—UNS R58645. Titanium alloy (3 %
1.1.1 Grade 1—UNS R50250. Unalloyed titanium,
aluminum, 8 % vanadium, 6 % chromium, 4 % zirconium, 4 %
1.1.2 Grade 2—UNS R50400. Unalloyed titanium,
molybdenum) plus 0.04 % to 0.08 % palladium,
1.1.2.1 Grade 2H—UNS R50400. Unalloyed titanium
1.1.17 Grade 21—UNS R58210. Titanium alloy (15 %
(Grade 2 with 58 ksi (400 MPa) minimum UTS),
molybdenum, 3 % aluminum, 2.7 % niobium, 0.25 % silicon),
1.1.3 Grade 3—UNS R50550. Unalloyed titanium,
1.1.18 Grade 23—UNS R56407. Titanium alloy (6 %
1.1.4 Grade 5—UNS R56400. Titanium alloy (6 %
aluminum, 4 % vanadium, extra low interstitial, ELI),
aluminum, 4 % vanadium),
1.1.19 Grade 24—UNS R56405. Titanium alloy (6 %
1.1.5 Grade 7—UNS R52400. Unalloyed titanium plus
0.12 % to 0.25 % palladium, aluminum, 4 % vanadium) plus 0.04 % to 0.08 % palladium,
1.1.5.1 Grade 7H—UNS R52400. Unalloyed titanium plus 1.1.20 Grade 25—UNS R56403. Titanium alloy (6 %
0.12 % to 0.25 % palladium (Grade 7 with 58 ksi (400 MPa) aluminum, 4 % vanadium) plus 0.3 % to 0.8 % nickel and
minimum UTS), 0.04 % to 0.08 % palladium,
1.1.6 Grade 9—UNS R56320. Titanium alloy (3 %
1.1.21 Grade 26—UNS R52404. Unalloyed titanium plus
aluminum, 2.5 % vanadium), 0.08 % to 0.14 % ruthenium,
1.1.7 Grade 11—UNS R52250. Unalloyed titanium plus
1.1.21.1 Grade 26H—UNS R52404. Unalloyed titanium
0.12 % to 0.25 % palladium,
plus 0.08 % to 0.14 % ruthenium (Grade 26 with 58 ksi
1.1.8 Grade 12—UNS R53400. Titanium alloy (0.3 %
(400 MPa) minimum UTS),
molybdenum, 0.8 % nickel),
1.1.22 Grade 27—UNS R52254. Unalloyed titanium plus
1.1.9 Grade 13—UNS R53413. Titanium alloy (0.5 %
0.08 % to 0.14 % ruthenium,
nickel, 0.05 % ruthenium),
1.1.23 Grade 28—UNS R56323. Titanium alloy (3 %
1.1.10 Grade 14—UNS R53414. Titanium alloy (0.5 %
aluminum, 2.5 % vanadium plus 0.08 % to 0.14 % ruthenium),
nickel, 0.05 % ruthenium),
1.1.24 Grade 29—UNS R56404. Titanium alloy (6 %
1.1.11 Grade 15—UNS R53415. Titanium alloy (0.5 %
aluminum, 4 % vanadium, extra low interstitial, ELI plus
nickel, 0.05 % ruthenium),
0.08 % to 0.14 % ruthenium),
1.1.12 Grade 16—UNS R52402. Unalloyed titanium plus
1.1.25 Grade 33—UNS R53442. Titanium alloy (0.4 %
0.04 % to 0.08 % palladium,
nickel, 0.015 % palladium, 0.025 % ruthenium, 0.15 %
1.1.12.1 Grade 16H—UNS R52402. Unalloyed titanium
chromium),
plus 0.04 % to 0.08 % palladium (Grade 16 with 58 ksi
1.1.26 Grade 34—UNS R53445. Titanium alloy (0.4 %
(400 MPa) minimum UTS),
nickel, 0.015 % palladium, 0.025 % ruthenium, 0.15 %
1.1.13 Grade 17—UNS R52252. Unalloyed titanium plus
chromium),
0.04 % to 0.08 % palladium,
1.1.27 Grade 35—UNS R56340. Titanium alloy (4.5 %
aluminum, 2 % molybdenum, 1.6 % vanadium, 0.5 % iron,
1 0.3 % silicon),
This specification is under the jurisdiction of ASTM Committee B10 on
Reactive and Refractory Metals and Alloys and is the direct responsibility of
1.1.28 Grade 36—UNS R58450. Titanium alloy (45 %
Subcommittee B10.01 on Titanium.
niobium),
Current edition approved April 1, 2024. Published April 2024. Originally
1.1.29 Grade 37—UNS R52815. Titanium alloy (1.5 %
approved in 1995. Last previous edition approved in 2019 as B861 – 19. DOI:
10.1520/B0861-24. aluminum), and
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
B861 − 24
1.1.30 Grade 38—UNS R54250. Titanium alloy (4 % 3. Terminology
aluminum, 2.5 % vanadium, 1.5 % iron).
3.1 Definitions:
NOTE 1—H grade material is identical to the corresponding numeric
3.1.1 lot, n—a number of pieces of pipe of the same nominal
grade (that is, Grade 2H = Grade 2) except for the higher guaranteed
size and wall thickness manufactured by the same process from
minimum UTS, and may always be certified as meeting the requirements
a single heat of titanium or titanium alloy and heat treated by
of its corresponding numeric grade. Grades 2H, 7H, 16H, and 26H are
intended primarily for pressure vessel use.
the same furnace parameters in the same furnace.
1.2 The values stated in inch-pound units are to be regarded
3.1.2 seamless pipe, n—a hollow tubular product produced
as standard. The values given in parentheses are mathematical
with a continuous periphery in all stages of manufacture.
conversions to SI units that are provided for information only
and are not considered standard.
4. Ordering Information
1.3 This international standard was developed in accor-
4.1 Orders for materials under this specification shall in-
dance with internationally recognized principles on standard-
clude the following information as required:
ization established in the Decision on Principles for the
4.1.1 Quantity,
Development of International Standards, Guides and Recom-
4.1.2 Grade number (Section 1 and Table 1),
mendations issued by the World Trade Organization Technical
4.1.3 Nominal pipe size and schedule (Table 2),
Barriers to Trade (TBT) Committee.
4.1.4 Diameter tolerance (Table 3),
4.1.5 Length tolerance (see 9.3),
2. Referenced Documents
4.1.6 Method of manufacture and finish (Sections 5 and 10),
4.1.7 Product analysis, if required (Sections 6 and 7; Table
2.1 ASTM Standards:
1 and Table 4),
A370 Test Methods and Definitions for Mechanical Testing
4.1.8 Mechanical properties, (Sections 8, 14, 15, and 16 and
of Steel Products
Table 5),
B600 Guide for Descaling and Cleaning Titanium and Tita-
4.1.9 Packaging (Section 23),
nium Alloy Surfaces
4.1.10 Inspection and test reports (Sections 19, 20 and 21),
E8/E8M Test Methods for Tension Testing of Metallic Ma-
and
terials
4.1.11 Product marking (Section 22).
E29 Practice for Using Significant Digits in Test Data to
Determine Conformance with Specifications
5. Manufacture
E539 Test Method for Analysis of Titanium Alloys by
Wavelength Dispersive X-Ray Fluorescence Spectrometry 5.1 Seamless pipe may be manufactured by any method that
E1409 Test Method for Determination of Oxygen and Nitro- will yield a product meeting the requirements of this specifi-
gen in Titanium and Titanium Alloys by Inert Gas Fusion cation.
E1447 Test Method for Determination of Hydrogen in Re-
5.2 Unless specified, cold-worked pipe shall be heat treated
active Metals and Reactive Metal Alloys by Inert Gas
at a temperature of not less than 1000 °F (538 °C). Hot worked
Fusion with Detection by Thermal Conductivity or Infra-
pipe finishing above 1400 °F (760 °C) need not be further heat
red Spectrometry
treated. The minimum heat treat conditions for Grade 9, 18,
E1941 Test Method for Determination of Carbon in Refrac-
and 28 pipe delivered in the stress relieved condition shall be
tory and Reactive Metals and Their Alloys by Combustion
600 °F (316 °C) for at least 30 min.
Analysis
5.2.1 Grade 5, Grade 9, Grade 18, Grade 19, Grade 20,
E2371 Test Method for Analysis of Titanium and Titanium
Grade 21, Grade 23, Grade 24, Grade 25, Grade 28, Grade 29,
Alloys by Direct Current Plasma and Inductively Coupled
Grade 35, Grade 36, and Grade 38 alloys may be supplied in
Plasma Atomic Emission Spectrometry (Performance-
the following conditions:
Based Test Methodology)
5.2.1.1 Grade 5, Grade 23, Grade 24, Grade 25, Grade 29,
E2994 Test Method for Analysis of Titanium and Titanium
Grade 35, or Grade 36—Annealed or aged condition,
Alloys by Spark Atomic Emission Spectrometry and Glow
5.2.1.2 Grade 9, Grade 18, Grade 28, or Grade 38—Cold-
Discharge Atomic Emission Spectrometry (Performance-
worked and stress-relieved or annealed,
Based Method)
5.2.1.3 Grade 9, Grade 18, Grade 23, Grade 28, or Grade
2.2 ANSI/ASME Standards: 29—Transformed-beta condition, and
B.1.20.1 Pipe Threads, General Purpose (Inch) 5.2.1.4 Grade 19, Grade 20, or Grade 21—Solution-treated
B 36.10 Carbon, Alloy and Stainless Steel Pipes or solution-treated and aged.
B 36.19M-1985 Stainless Steel Pipe
6. Chemical Requirements
6.1 The grades of titanium and titanium alloy metal covered
by this specification shall conform to the requirements of the
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
chemical compositions prescribed in Table 1.
Standards volume information, refer to the standard’s Document Summary page on
6.1.1 The elements listed in Table 1 are intentional alloy
the ASTM website.
additions or elements which are inherent to the manufacture of
Available from American National Standards Institute (ANSI), 25 W. 43rd St.,
4th Floor, New York, NY 10036, http://www.ansi.org. titanium sponge, ingot, or mill product.
B861 − 24
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
— — — — — — — — — — — — — — — — — — — —
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 0.015 0.25 5.5- 3.5- - - 0.08- - - - - - - - - - - - - - - - - 0.1 0.4
6.5 4.5 0.14
— — — — — — — — — — — — — — — — — — — —
— — — — — — — — — — — — — — — — — — — —
32 R55111 0.08 0.11 0.03 0.015 0.25 4.5- 0.6- - - - - - - 0.6- - - - - 0.6-1.4 - - 0.6- 0.06- 0.1 0.4
5.5 1.4 1.2 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
B861 − 24
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
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
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 elements not listed in this specification.

B861 − 24
TABLE 2 Dimensions of Pipe
NOTE 1—Schedule sizes conform to ANSI/ASME B36.19M-1985 (for “S” sizes) or B36.10 (for non-S sizes).
NOTE 2—The decimal thickness listed for the respective pipe sizes represent their nominal wall dimensions.
NPS Outside Dia. Nominal Wall Thickness
Desig.
A A A A
Schedule 5S Schedule 5 Schedule 10S Schedule 10 Schedule 40S Schedule 40 Schedule 80S Schedule 80
in mm in mm in mm in mm in mm in mm in mm in mm in mm
⁄8 0.405 10.29 x x x x 0.049 1.24 0.049 1.24 0.068 1.73 0.068 1.73 0.095 2.41 0.095 2.41
⁄4 0.540 13.72 x x x x 0.065 1.65 0.065 1.65 0.088 2.24 0.088 2.24 0.119 3.02 0.119 3.02
⁄8 0.675 17.15 x x x x 0.065 1.65 0.065 1.65 0.091 2.31 0.091 2.31 0.126 3.20 0.126 3.20
⁄2 0.840 21.34 0.065 1.65 0.065 1.65 0.083 2.11 0.083 2.11 0.109 2.77 0.109 2.77 0.147 3.73 0.147 3.73
⁄4 1.050 26.67 0.065 1.65 0.065 1.65 0.083 2.11 0.083 2.11 0.113 2.87 0.113 2.87 0.154 3.91 0.154 3.91
1 1.315 33.40 0.065 1.65 0.065 1.65 0.109 2.77 0.109 2.77 0.133 3.38 0.133 3.38 0.179 4.55 0.179 4.55
1- ⁄4 1.660 42.16 0.065 1.65 0.065 1.65 0.109 2.77 0.109 2.77 0.140 3.56 0.140 3.56 0.191 4.85 0.191 4.85
1- ⁄2 1.900 48.26 0.065 1.65 0.065 1.65 0.109 2.77 0.109 2.77 0.145 3.68 0.145 3.68 0.200 5.08 0.200 5.08
2 2.375 60.32 0.065 1.65 0.065 1.65 0.109 2.77 0.109 2.77 0.154 3.91 0.154 3.91 0.218 5.54 0.218 5.54
2- ⁄2 2.875 73.02 0.083 2.11 0.083 2.11 0.120 3.05 0.120 3.05 0.203 5.16 0.203 5.16 0.276 7.01 0.276 7.01
3 3.500 88.90 0.083 2.11 0.083 2.11 0.120 3.05 0.120 3.05 0.216 5.49 0.216 5.49 0.300 7.62 0.300 7.62
3- ⁄2 4.000 101.60 0.083 2.11 0.083 2.11 0.120 3.05 0.120 3.05 0.226 5.74 0.226 5.74 0.318 8.08 0.318 8.08
4 4.500 114.30 0.083 2.11 0.083 2.11 0.120 3.05 0.120 3.05 0.237 6.02 0.237 6.02 0.337 8.56 0.337 8.56
5 5.563 141.30 0.109 2.77 0.109 2.77 0.134 3.40 0.134 3.40 0.258 6.55 0.258 6.55 0.375 9.53 0.375 9.53
6 6.625 168.27 0.109 2.77 0.109 2.77 0.134 3.40 0.134 3.40 0.280 7.11 0.280 7.11 0.432 10.97 0.432 10.97
8 8.625 219.07 0.109 2.77 0.109 2.77 0.148 3.76 0.148 3.76 0.322 8.18 0.322 8.18 0.500 12.70 0.500 12.70
10 10.75 273.05 0.134 3.40 0.134 3.40 0.165 4.19 0.165 4.19 0.365 9.27 0.365 9.27 0.500 12.70 0.594 15.09
12 12.75 323.85 0.156 3.96 0.156 3.96 0.180 4.57 0.180 4.57 0.375 9.53 0.406 10.31 0.500 12.70 0.688 17.48
14 14.00 355.60 0.156 3.96 0.156 3.96 0.188 4.78 0.250 6.35 x x 0.438 11.13 x x 0.750 19.05
16 16.00 406.40 0.165 4.19 0.165 4.19 0.188 4.78 0.250 6.35 x x 0.500 12.
...

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: B861 − 19 B861 − 24
Standard Specification for
Titanium and Titanium Alloy Seamless Pipe
This standard is issued under the fixed designation B861; 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 the requirements for 34 grades of titanium and titanium alloy seamless pipe intended for general
corrosion resisting and elevated temperature service 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 5—UNS R56400. Titanium alloy (6 % aluminum, 4 % vanadium),
1.1.5 Grade 7—UNS R52400. Unalloyed titanium plus 0.120.12 % to 0.25 % palladium,
1.1.5.1 Grade 7H—UNS R52400. Unalloyed titanium plus 0.120.12 % to 0.25 % palladium (Grade 7 with 58 ksi (400 MPa)
minimum UTS),
1.1.6 Grade 9—UNS R56320. Titanium alloy (3 % aluminum, 2.5 % vanadium),
1.1.7 Grade 11—UNS R52250. Unalloyed titanium plus 0.120.12 % to 0.25 % palladium,
1.1.8 Grade 12—UNS R53400. Titanium alloy (0.3 % molybdenum, 0.8 % nickel),
1.1.9 Grade 13—UNS R53413. Titanium alloy (0.5 % nickel, 0.05 % ruthenium),
1.1.10 Grade 14—UNS R53414. Titanium alloy (0.5 % nickel, 0.05 % ruthenium),
1.1.11 Grade 15—UNS R53415. Titanium alloy (0.5 % nickel, 0.05 % ruthenium),
1.1.12 Grade 16—UNS R52402. Unalloyed titanium plus 0.040.04 % to 0.08 % palladium,
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, 2019April 1, 2024. Published November 2019April 2024. Originally approved in 1995. Last previous edition approved in 20142019 as
B861 – 14.B861 – 19. DOI: 10.1520/B0861-19.10.1520/B0861-24.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
B861 − 24
1.1.12.1 Grade 16H—UNS R52402. Unalloyed titanium plus 0.040.04 % to 0.08 % palladium (Grade 16 with 58 ksi (400 MPa)
(400 MPa) minimum UTS),
1.1.13 Grade 17—UNS R52252. Unalloyed titanium plus 0.040.04 % to 0.08 % palladium,
1.1.14 Grade 18—UNS R56322. Titanium alloy (3 % aluminum, 2.5 % vanadium plus 0.040.04 % to 0.08 % palladium),
1.1.15 Grade 19—UNS R58640. Titanium alloy (3 % aluminum, 8 % vanadium, 6 % chromium, 4 % zirconium, 4 %
molybdenum),
1.1.16 Grade 20—UNS R58645. Titanium alloy (3 % aluminum, 8 % vanadium, 6 % chromium, 4 % zirconium, 4 %
molybdenum) plus 0.040.04 % to 0.08 % palladium,
1.1.17 Grade 21—UNS R58210. Titanium alloy (15 % molybdenum, 3 % aluminum, 2.7 % niobium, 0.25 % silicon),
1.1.18 Grade 23—UNS R56407. Titanium alloy (6 % aluminum, 4 % vanadium, extra low interstitial, ELI),
1.1.19 Grade 24—UNS R56405. Titanium alloy (6 % aluminum, 4 % vanadium) plus 0.040.04 % to 0.08 % palladium,
1.1.20 Grade 25—UNS R56403. Titanium alloy (6 % aluminum, 4 % vanadium) plus 0.30.3 % to 0.8 % nickel and 0.040.04 %
to 0.08 % palladium,
1.1.21 Grade 26—UNS R52404. Unalloyed titanium plus 0.080.08 % to 0.14 % ruthenium,
1.1.21.1 Grade 26H—UNS R52404. Unalloyed titanium plus 0.080.08 % to 0.14 % ruthenium (Grade 26 with 58 ksi (400 MPa)
(400 MPa) minimum UTS),
1.1.22 Grade 27—UNS R52254. Unalloyed titanium plus 0.080.08 % to 0.14 % ruthenium,
1.1.23 Grade 28—UNS R56323. Titanium alloy (3 % aluminum, 2.5 % vanadium plus 0.080.08 % to 0.14 % ruthenium),
1.1.24 Grade 29—UNS R56404. Titanium alloy (6 % aluminum, 4 % vanadium, extra low interstitial, ELI plus 0.080.08 % to
0.14 % ruthenium),
1.1.25 Grade 33—UNS R53442. Titanium alloy (0.4 % nickel, 0.015 % palladium, 0.025 % ruthenium, 0.15 % chromium),
1.1.26 Grade 34—UNS R53445. Titanium alloy (0.4 % nickel, 0.015 % palladium, 0.025 % ruthenium, 0.15 % chromium),
1.1.27 Grade 35—UNS R56340. Titanium alloy (4.5 % aluminum, 2 % molybdenum, 1.6 % vanadium, 0.5 % iron, 0.3 % silicon),
1.1.28 Grade 36—UNS R58450. Titanium alloy (45 % niobium),
1.1.29 Grade 37—UNS R52815. Titanium alloy (1.5 % aluminum), and
1.1.30 Grade 38—UNS R54250. Titanium 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.
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.
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.
B861 − 24
2. Referenced Documents
2.1 ASTM Standards:
A370 Test Methods and Definitions for Mechanical Testing of Steel Products
B600 Guide for Descaling and Cleaning Titanium and Titanium Alloy Surfaces
E8E8/E8M Test Methods for Tension Testing of Metallic Materials [Metric] E0008_E0008M
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 Reactive Metals and Reactive Metal Alloys by Inert Gas Fusion with
Detection by Thermal Conductivity or Infrared Spectrometry
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)
E2994 Test Method for Analysis of Titanium and Titanium Alloys by Spark Atomic Emission Spectrometry and Glow Discharge
Atomic Emission Spectrometry (Performance-Based Method)
2.2 ANSI/ASME Standards:
B.1.20.1 Pipe Threads, General Purpose (Inch)
B 36.10 Carbon, Alloy and Stainless Steel Pipes
B 36.19M-1985 Stainless Steel Pipe
3. Terminology
3.1 Definitions:
3.1.1 lot, n—a number of pieces of pipe of the same nominal size and wall thickness manufactured by the same process from a
single heat of titanium or titanium alloy and heat treated by the same furnace parameters in the same furnace.
3.1.2 seamless pipe, n—a hollow tubular product produced with a continuous periphery in all stages of manufacture.
4. Ordering Information
4.1 Orders for materials under this specification shall include the following information as required:
4.1.1 Quantity,
4.1.2 Grade number (Section 1 and Table 1),
4.1.3 Nominal pipe size and schedule (Table 2),
4.1.4 Diameter tolerance (Table 3),
4.1.5 Length tolerance (see 9.3),
4.1.6 Method of manufacture and finish (Sections 5 and 10),
4.1.7 Product analysis, if required (Sections 6 and 7; Table 1 and Table 4),
4.1.8 Mechanical properties, (Sections 8, 14, 15, and 16 and Table 5),
4.1.9 Packaging (Section 23),
4.1.10 Inspection and test reports (Sections 19, 20 and 21), and
4.1.11 Product marking (Section 22).
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.
Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
B861 − 24
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
— — — — — — — — — — — — — — — — — — — —
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 0.015 0.25 5.5- 3.5- - - 0.08- - - - - - - - - - - - - - - - - 0.1 0.4
6.5 4.5 0.14
— — — — — — — — — — — — — — — — — — — —
— — — — — — — — — — — — — — — — — — — —
32 R55111 0.08 0.11 0.03 0.015 0.25 4.5- 0.6- - - - - - - 0.6- - - - - 0.6-1.4 - - 0.6- 0.06- 0.1 0.4
5.5 1.4 1.2 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
B861 − 24
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
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
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 elements not listed in this specification.

B861 − 24
TABLE 2 Dimensions of Pipe
NOTE 1—Schedule sizes conform to ANSI/ASME B36.19M-1985 (for “S” sizes) or B36.10 (for non-S sizes).
NOTE 2—The decimal thickness listed for the respective pipe sizes represent their nominal wall dimensions.
NPS Outside Dia. Nominal Wall Thickness
Desig. A A A A
Schedule 5S Schedule 5 Schedule 10S Schedule 10 Schedule 40S Schedule 40 Schedule 80S Schedule 80
in mm in mm in mm in mm in mm in mm in mm in mm in mm
⁄8 0.405 10.29 x x x x 0.049 1.24 0.049 1.24 0.068 1.73 0.068 1.73 0.095 2.41 0.095 2.41
⁄4 0.540 13.72 x x x x 0.065 1.65 0.065 1.65 0.088 2.24 0.088 2.24 0.119 3.02 0.119 3.02
⁄8 0.675 17.15 x x x x 0.065 1.65 0.065 1.65 0.091 2.31 0.091 2.31 0.126 3.20 0.126 3.20
⁄2 0.840 21.34 0.065 1.65 0.065 1.65 0.083 2.11 0.083 2.11 0.109 2.77 0.109 2.77 0.147 3.73 0.147 3.73
⁄4 1.050 26.67 0.065 1.65 0.065 1.65 0.083 2.11 0.083 2.11 0.113 2.87 0.113 2.87 0.154 3.91 0.154 3.91
1 1.315 33.40 0.065 1.65 0.065 1.65 0.109 2.77 0.109 2.77 0.133 3.38 0.133 3.38 0.179 4.55 0.179 4.55
1- ⁄4 1.660 42.16 0.065 1.65 0.065 1.65 0.109 2.77 0.109 2.77 0.140 3.56 0.140 3.56 0.191 4.85 0.191 4.85
1- ⁄2 1.900 48.26 0.065 1.65 0.065 1.65 0.109 2.77 0.109 2.77 0.145 3.68 0.145 3.68 0.200 5.08 0.200 5.08
2 2.375 60.32 0.065 1.65 0.065 1.65 0.109 2.77 0.109 2.77 0.154 3.91 0.154 3.91 0.218 5.54 0.218 5.54
2- ⁄2 2.875 73.02 0.083 2.11 0.083 2.11 0.120 3.05 0.120 3.05 0.203 5.16 0.203 5.16 0.276 7.01 0.276 7.01
3 3.500 88.90 0.083 2.11 0.083 2.11 0.120 3.05 0.120 3.05 0.216 5.49 0.216 5.49 0.300 7.62 0.300 7.62
3- ⁄2 4.000 101.60 0.083 2.11 0.083 2.11 0.120 3.05 0.120 3.05 0.226 5.74 0.226 5.74 0.318 8.08 0.318 8.08
4 4.500 114.30 0.083 2.11 0.083 2.11 0.120 3.05 0.120 3.05 0.237 6.02 0.237 6.02 0.337 8.56 0.337 8.56
5 5.563 141.30 0.109 2.77 0.109 2.77 0.134 3.40 0.134 3.40 0.258 6.55 0.258 6.55 0.375 9.53 0.375 9.53
6 6.625 168.27 0.109 2.77 0.109 2.77 0.134 3.40 0.134 3.40 0.280 7.11 0.280 7.11 0.432 10.97 0.432 10.97
8 8.625 219.07 0.109 2.77 0.109 2.77 0.148 3.76 0.148 3.76 0.322 8.18 0.322 8.18 0.500 12.70 0.500 12.70
10 10.75 273.05 0.134 3.40 0.134 3.40 0.165 4.19 0.165 4.19 0.365 9.27 0.365 9.27 0.500 12.70 0.594 15.09
12 12.75 323.85 0.156 3.96 0.156 3.96 0.180 4.57 0.180 4.57 0.375 9.53 0.406 10.31 0.500 12.70 0.688 17.48
14 14.00 355.60 0.156 3.96 0.156 3.96 0.188 4.78 0.250 6.35 x x 0.438 11.13 x x 0.750 19.05
16 16.00 406.40 0.165 4.19 0.165 4.19 0.188 4.78 0.250 6.35 x x 0.500 12.70 x x 0.844 21.44
18 18.00 457.20 0.165 4.19 0.165 4.19 0.188 4.78 0.250 6.35 x x 0.562 14.27 x x 0.938 23.83
20 20.00 508.00 0.188 4.78 0.188 4.78 0.218 5.54 0.250 6.35 x x 0.594 15.09 x x 1.031 26.19
22 22.00 558.80 0.188 4.78 0.188 4.78 0.218 5.54 0.250 6.35 x x x x x x 1.125 28.58
24 24.00 609.60 0.218 5.54 0.218 5.54 0.250 6.35 0.250 6.35 x x 0.688 17.48 x x 1.219 30.96
26 26.00 660.40 x x x x x x 0.312 7.92 x x x x x x x x
28 28.00 711.20 x x x x x x 0.312 7.92 x x x x x x x x
30 30.00 762.00 0.250 6.35 0.250 6.35 0.312 7.92 0.312 7.92 x x x x x x x x
32 32.00 812.80 x x x x x x 0.312 7.92 x x 0.688 17.48 x x x x
34 34.00 863.60 x x x x x x 0.312 7.92 x x 0.688 17.48 x x x x
36 36.00 914.40 x x x x x x 0.312 7.92 x x 0.750 19.05 x x x x
A
Threading not permitted in accordance with ANSI B.1.20.1.

B861 − 24
TABLE 3 Permissible Variations in Diameter
Permissible Variations in Outside
A
Diameter
Nominal Outside Diameter (NPS)
Over Under
1 1 1 1
⁄8 in. to 1 ⁄2 in. (3.2 mm to 38 mm) ⁄64 in. (0.397 mm) ⁄32 in. (0.794 mm)
1 1 1
over 1 ⁄2 in. to 4 in. (38 mm to 102 mm) ⁄32 in. (0.794 mm) ⁄32 in. (0.794 mm)
1 1
over 4 in. to 8 in. (102 mm to 203 mm) ⁄16 in. (1.588 mm) ⁄32 in. (0.794 mm)
3 1
over 8 in. to 18 in. (203 mm to 432 ⁄32 in. (2.382 mm) ⁄32 in. (0.794 mm)
mm)
A
NPS = nominal pipe size.
TABLE 4 Permissible Variations in Product Analysis
Produ
...