Standard Specification for Seamless Nickel and Nickel-Cobalt Alloy Pipe and Tube

ABSTRACT
This specification covers seamless pipe and tube of nickel and nickel-cobalt alloys. These alloys are classified into different grades according to chemical composition. Mechanical properties of the material like tensile strength, yield strength, and elongation shall be measured. Tension, hydrostatic, and nondestructive electric tests shall be done on each pipe or tube. The mass or weight of each pipe shall be calculated and the chemical composition of each pipe shall be determined.
SCOPE
1.1 This specification2 covers seamless pipe and tube of nickel and nickel-cobalt alloys. covers seamless pipe and tube of nickel and nickel-cobalt alloys.    
1.2 Alloys that can currently be certified to this specification are (UNS N10001, UNS N10242, UNS N10665, UNS N12160, UNS N10675, UNS N10276, UNS N06455, UNS N06007, UNS N08320, UNS N06975, UNS N06002, UNS N06985, UNS N06022, UNS N06035, UNS N06044, UNS N08135, UNS N06255, UNS N06058, UNS N06059, UNS N06200, UNS N10362, UNS N06030, UNS N08031, UNS N08034, UNS R30556, UNS N08535, UNS N06250, UNS N06060, UNS N06230, UNS N06235, UNS N06686, UNS N10629, UNS N06210, UNS N10624, and UNS R20033)3.  
1.3 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.  
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to become familiar with all hazards including those identified in the appropriate Safety Data Sheet (SDS) for this product/material as provided by the manufacturer, to establish appropriate safety, health, and environmental practices, and determine the applicability of regulatory limitations prior to use.  
1.5 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.

General Information

Status
Published
Publication Date
30-Nov-2023

Relations

Effective Date
01-Dec-2023
Effective Date
01-Jan-2024
Effective Date
01-May-2022
Effective Date
01-Dec-2023
Effective Date
01-Dec-2023

Overview

ASTM B622-23: Standard Specification for Seamless Nickel and Nickel-Cobalt Alloy Pipe and Tube is an internationally recognized guideline developed by ASTM International. This specification defines the requirements for seamless pipes and tubes manufactured from nickel and nickel-cobalt alloys, encompassing a range of UNS designations. It addresses criteria for chemical composition, mechanical properties such as tensile and yield strength, test procedures, and dimensions. Materials covered by ASTM B622-23 are designed for use in environments requiring excellent corrosion resistance and mechanical strength.

Key Topics

  • Scope and Materials Covered

    • Applies to seamless pipe and tube manufactured from nickel and nickel-cobalt alloys.
    • Includes a comprehensive list of alloy grades (e.g., UNS N10276, N06022, N06686, and others).
    • Outlines that inch-pound units are standard, with SI conversions for reference only.
  • Chemical Composition & Mechanical Properties

    • Chemical composition requirements are specified for each alloy, ensuring consistency and performance.
    • Mechanical properties-such as minimum tensile strength, yield strength, and elongation-are determined at room temperature and must meet established minimum values.
    • Density values for each alloy are provided for accurate mass and weight calculations.
  • Product Testing and Certification

    • Each pipe or tube must undergo hydrostatic testing or a nondestructive electric test, and tension tests per specified ASTM methods.
    • Inspection and sampling guidelines are established to ensure products consistently meet criteria.
    • When required, manufacturers must issue certification that materials comply with all aspects of ASTM B622-23.
  • Dimensions and Tolerances

    • Specifies limits on outside diameters (up to 3.5 inches/88.9 mm for tubes).
    • Includes standard pipe schedules (10, 40, 80) and associated wall thickness requirements.
  • Safety and Compliance

    • Emphasizes user responsibility to be aware of any relevant safety, health, and environmental guidelines, referencing appropriate Safety Data Sheets (SDS).

Applications

Pipes and tubes produced according to ASTM B622-23 are widely used in industries demanding high performance and corrosion resistance, including:

  • Chemical Processing: For transporting acids, solvents, and aggressive media in processing plants.
  • Pharmaceutical Manufacturing: Where purity and resistance to contamination are critical.
  • Petrochemical and Oil & Gas: Used in refinery equipment, heat exchangers, and piping systems exposed to harsh chemicals.
  • Power Generation: Ideal for steam generators, condensers, and high-temperature service.
  • Marine Applications: For seawater handling and desalination plants, benefiting from superior corrosion resistance.

These seamless nickel and nickel-cobalt alloy pipes and tubes ensure long service life, reliability, and structural integrity in challenging environments.

Related Standards

Implementing ASTM B622-23 often involves reference to related industry standards, ensuring a comprehensive approach to product quality and performance:

  • ASTM B829: General requirements for nickel and nickel-alloy seamless pipe and tube.
  • ASTM B899: Terminology relating to non-ferrous metals and alloys.
  • ASTM E8/E8M: Test methods for tension testing of metallic materials.
  • ASTM E527: Unified Numbering System (UNS) for metals and alloys.

For pressure vessel applications, relevant sections of the ASME Boiler and Pressure Vessel Code (see SB-622) may also apply.

Keywords: ASTM B622, seamless nickel pipe, nickel-cobalt alloy tube, corrosion-resistant piping, UNS alloys, chemical processing pipe, mechanical properties, hydrostatic test, seamless tube specification, ASTM standards.

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Frequently Asked Questions

ASTM B622-23 is a technical specification published by ASTM International. Its full title is "Standard Specification for Seamless Nickel and Nickel-Cobalt Alloy Pipe and Tube". This standard covers: ABSTRACT This specification covers seamless pipe and tube of nickel and nickel-cobalt alloys. These alloys are classified into different grades according to chemical composition. Mechanical properties of the material like tensile strength, yield strength, and elongation shall be measured. Tension, hydrostatic, and nondestructive electric tests shall be done on each pipe or tube. The mass or weight of each pipe shall be calculated and the chemical composition of each pipe shall be determined. SCOPE 1.1 This specification2 covers seamless pipe and tube of nickel and nickel-cobalt alloys. covers seamless pipe and tube of nickel and nickel-cobalt alloys. 1.2 Alloys that can currently be certified to this specification are (UNS N10001, UNS N10242, UNS N10665, UNS N12160, UNS N10675, UNS N10276, UNS N06455, UNS N06007, UNS N08320, UNS N06975, UNS N06002, UNS N06985, UNS N06022, UNS N06035, UNS N06044, UNS N08135, UNS N06255, UNS N06058, UNS N06059, UNS N06200, UNS N10362, UNS N06030, UNS N08031, UNS N08034, UNS R30556, UNS N08535, UNS N06250, UNS N06060, UNS N06230, UNS N06235, UNS N06686, UNS N10629, UNS N06210, UNS N10624, and UNS R20033)3. 1.3 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. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to become familiar with all hazards including those identified in the appropriate Safety Data Sheet (SDS) for this product/material as provided by the manufacturer, to establish appropriate safety, health, and environmental practices, and determine the applicability of regulatory limitations prior to use. 1.5 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.

ABSTRACT This specification covers seamless pipe and tube of nickel and nickel-cobalt alloys. These alloys are classified into different grades according to chemical composition. Mechanical properties of the material like tensile strength, yield strength, and elongation shall be measured. Tension, hydrostatic, and nondestructive electric tests shall be done on each pipe or tube. The mass or weight of each pipe shall be calculated and the chemical composition of each pipe shall be determined. SCOPE 1.1 This specification2 covers seamless pipe and tube of nickel and nickel-cobalt alloys. covers seamless pipe and tube of nickel and nickel-cobalt alloys. 1.2 Alloys that can currently be certified to this specification are (UNS N10001, UNS N10242, UNS N10665, UNS N12160, UNS N10675, UNS N10276, UNS N06455, UNS N06007, UNS N08320, UNS N06975, UNS N06002, UNS N06985, UNS N06022, UNS N06035, UNS N06044, UNS N08135, UNS N06255, UNS N06058, UNS N06059, UNS N06200, UNS N10362, UNS N06030, UNS N08031, UNS N08034, UNS R30556, UNS N08535, UNS N06250, UNS N06060, UNS N06230, UNS N06235, UNS N06686, UNS N10629, UNS N06210, UNS N10624, and UNS R20033)3. 1.3 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. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to become familiar with all hazards including those identified in the appropriate Safety Data Sheet (SDS) for this product/material as provided by the manufacturer, to establish appropriate safety, health, and environmental practices, and determine the applicability of regulatory limitations prior to use. 1.5 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.

ASTM B622-23 is classified under the following ICS (International Classification for Standards) categories: 23.040.15 - Non-ferrous metal pipes. The ICS classification helps identify the subject area and facilitates finding related standards.

ASTM B622-23 has the following relationships with other standards: It is inter standard links to ASTM B622-17b, ASTM E8/E8M-24, ASTM E8/E8M-22, ASTM B924-02(2022), ASTM B366/B366M-23. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

ASTM B622-23 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.

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: B622 − 23
Standard Specification for
Seamless Nickel and Nickel-Cobalt Alloy Pipe and Tube
This standard is issued under the fixed designation B622; 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.
1. Scope* 2. Referenced Documents
2.1 ASTM Standards:
1.1 This specification covers seamless pipe and tube of
B829 Specification for General Requirements for Nickel and
nickel and nickel-cobalt alloys. covers seamless pipe and tube
Nickel Alloys Seamless Pipe and Tube
of nickel and nickel-cobalt alloys.
B899 Terminology Relating to Non-ferrous Metals and Al-
1.2 Alloys that can currently be certified to this specification
loys
are (UNS N10001, UNS N10242, UNS N10665, UNS N12160,
E8/E8M Test Methods for Tension Testing of Metallic Ma-
UNS N10675, UNS N10276, UNS N06455, UNS N06007,
terials
UNS N08320, UNS N06975, UNS N06002, UNS N06985,
E527 Practice for Numbering Metals and Alloys in the
UNS N06022, UNS N06035, UNS N06044, UNS N08135,
Unified Numbering System (UNS)
UNS N06255, UNS N06058, UNS N06059, UNS N06200,
UNS N10362, UNS N06030, UNS N08031, UNS N08034, 3. Terminology
UNS R30556, UNS N08535, UNS N06250, UNS N06060,
3.1 Definitions:
UNS N06230, UNS N06235, UNS N06686, UNS N10629,
3.1.1 For definitions of terms used in this specification, refer
UNS N06210, UNS N10624, and UNS R20033) .
to Terminology B899.
1.3 The values stated in inch-pound units are to be regarded
3.2 Definitions of Terms Specific to This Standard:
as standard. The values given in parentheses are mathematical
3.2.1 average diameter, n—the average of the maximum and
conversions to SI units that are provided for information only
minimum outside diameters, or the maximum and minimum
and are not considered standard.
inside diameters, as determined at any cross section of the tube.
3.2.2 pipe, n—seamless tube conforming to the particular
1.4 This standard does not purport to address all of the
dimensions commercially known as standard pipe sizes (Ap-
safety concerns, if any, associated with its use. It is the
pendix X2).
responsibility of the user of this standard to become familiar
with all hazards including those identified in the appropriate
3.2.3 tube, n—a hollow product of round or any other cross
Safety Data Sheet (SDS) for this product/material as provided
section having a continuous periphery.
by the manufacturer, to establish appropriate safety, health,
and environmental practices, and determine the applicability 4. General Requirements
of regulatory limitations prior to use.
4.1 Material furnished under this specification shall con-
1.5 This international standard was developed in accor-
form to the applicable requirements of Specification B829
dance with internationally recognized principles on standard-
unless otherwise provided herein.
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom- 5. Ordering Information
mendations issued by the World Trade Organization Technical
5.1 It is the responsibility of the purchaser to specify all
Barriers to Trade (TBT) Committee.
requirements that are necessary for the material ordered under
this specification. Examples of such requirements include, but
are not limited to the following:
5.1.1 Alloy (Table 1).
This specification is under the jurisdiction of ASTM Committee B02 on
Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee
5.1.2 Dimensions:
B02.07 on Refined Nickel and Cobalt and Their Alloys.
Current edition approved Dec. 1, 2023. Published December 2023. Originally
approved in 1977. Last previous edition approved in 2017 as B622 – 17b. DOI:
10.1520/B0622-23. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
For ASME Boiler and Pressure Vessel Code applications see related Specifi- contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
cation SB-622 in Section II of that Code. Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
*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
B622 − 23
A
TABLE 1 Chemical Requirements
Composition Limits, %
Cb
P S Cb Ni+
Ni Cr Mo Fe W C Si Co Mn V Ti Cu (Nb) Al Zr La N B Ta Mg
max max (Nb) Mo
+Ta
Ni-Mo Alloys
N10001 remainder 1.0 26.0- 4.0-6.0 . 0.05 1.0 2.5 1.0 0.2- 0.04 0.03 . . .
30.0 0.4
N10665 remainder 1.0 26.0- 2.0 . 0.02 0.10 1.0 1.0 . 0.04 0.03 . . .
30.0
N10675 65.0 min 1.0- 27.0- 1.0-3.0 3.0 0.01 0.10 3.0 3.0 0.20 0.030 0.010 0.20 0.20 . 0.50 0.10 . . . 0.20 0.20 94.0-
3.0 32.0 98.0
N10629 remainder 0.5- 26.0- 1.0-6.0 . 0.01 0.05 2.5 1.5 . 0.04 0.01 . 0.5 . 0.1- . . . . . . .
1.5 30.0 0.5
N10624 remainder 6.0- 21.0- 5.0-8.0 . 0.01 0.10 1.0 1.0 . 0.025 0.01 . 0.5 . . . . . . . . .
10.0 25.0
Ni-Mo-Cr-Fe
Alloy
N10242 remainder 7.0- 24.0- 2.0 0.03 0.80 1.00 0.80 0.030 0.015 0.50 0.50 0.006
9.0 26.0
Low C Ni-
Cr-Mo Alloys
N10276 remainder 14.5- 15.0- 4.0-7.0 3.0- 0.010 0.08 2.5 1.0 0.35 0.04 0.03 . . .
16.5 17.0 4.5
N06022 remainder 20.0- 12.5- 2.0-6.0 2.5- 0.015 0.08 2.5 0.50 0.35 0.02 0.02 . . .
22.5 14.5 3.5
N06035 remainder 32.25- 7.60- 2.00 0.60 0.050 0.60 1.00 0.50 0.20 0.030 0.015 . 0.30 . 0.40 . . . . . . . .
34.25 9.00
N06044 balance 43.5- 0.80- 0.3 . 0.02 0.20 . 0.07- . 0.020 0.020 0.10- . . 0.30 . . . . . . . .
45.3 1.20 0.30 0.30
N06058 balance 20.0- 18.5- 1.5 0.3 0.010 0.10 0.3 0.50 0.015 0.010 . 0.50 . 0.40 0.02-
23.0 21.0 0.15
N06059 balance 22.0- 15.0- 1.5 . 0.010 0.10 0.3 0.5 . 0.015 0.010 . 0.50 . 0.1- . . . . . . .
24.0 16.5 0.4
N06455 remainder 14.0- 14.0- 3.0 . 0.015 0.08 2.0 1.0 . 0.04 0.03 0.70 . .
18.0 17.0
Ni-Cr-Fe-
Mo-Cu
Alloys
N06007 remainder 21.0- 5.5- 18.0-21.0 1.0 0.05 1.0 2.5 1.0- . 0.04 0.03 . 1.5- 1.75-
23.5 7.5 2.0 2.5 2.5
N06975 47.0-52.0 23.0- 5.0- remainder . 0.03 1.0 . 1.0 . 0.03 0.03 0.70- 0.70- .
26.0 7.0 1.50 1.20
N06985 remainder 21.0- 6.0- 18.0-21.0 1.5 0.015 1.0 5.0 1.0 . 0.04 0.03 . 1.5- 0.50
23.5 8.0 2.5
N06030 remainder 28.0- 4.0- 13.0-17.0 1.5- 0.03 0.8 5.0 1.5 . 0.04 0.02 . 1.0- 0.30-
31.5 6.0 4.0 2.4 1.50
N06255 47.0-52.0 23.0- 6.0- remainder 3.0 0.03 1.0 . 1.0 . 0.03 0.03 0.69 1.2 .
26.0 9.0
N06250 50.0-54.0 20.0- 10.1- remainder 0.25- 0.020 0.09 . 1.00 . 0.030 0.005 . 0.25- .
23.0 12.0 1.25 1.25
Ni-Fe-Cr-Mo
Alloys
N08320 25.0-27.0 21.0- 4.0- remainder . 0.05 1.0 . 2.5 . 0.04 0.03 4xC . .
23.0 6.0 min
N08135 33.0-38.0 20.5- 4.0- remainder 0.20- 0.030 0.75 . 1.00 . 0.03 0.03 .
23.5 5.0 0.80
Ni-Cr-Fe-Mo
Alloys
B622 − 23
TABLE 1 Continued
Composition Limits, %
Cb
P S Cb Ni+
Ni Cr Mo Fe W C Si Co Mn V Ti Cu (Nb) Al Zr La N B Ta Mg
max max (Nb) Mo
+Ta
N06002 remainder 20.5- 8.0- 17.0-20.0 0.20- 0.05- 1.0 0.5- 1.0 . 0.04 0.03 . . .
23.0 10.0 1.0 0.15 2.5
N06060 54.0–60.0 19.0- 12.0- remainder 0.25- 0.03 0.50 . 1.50 . 0.030 0.005 . 0.25- 0.50-
22.0 14.0 1.25 1.25 1.25
Ni-Cr-Mo-Cu
Alloy
N06235 remainder 30.0- 5.0- 1.5 0.60 0.02- 0.2- 1.0 0.3- . 0.03 0.015 0.5 3.5- . 0.2- . . . . 1.0 . . .
32.5 6.2 0.06 0.6 0.65 4.0 0.4
Ni-Fe-Cr-Co
Alloy
R30556 19.0-22.5 21.0- 2.5- remainder 2.0- 0.05- 0.20- 16.0- 0.50- . 0.04 0.015 . . . 0.10- 0.001- 0.005- 0.10- 0.02 0.30 0.3-
23.0 4.0 3.5 0.15 0.80 21.0 2.00 0.50 0.10 0.10 0.30 1.25
Ni-Cr-W-Mo
Alloys
N06230 remainder 20.0- 1.0- 3.0 13.0- 0.05- 0.25- 5.0 0.30- . 0.03 0.015 . . . 0.50 . 0.005- . 0.015 . .
24.0 3.0 15.0 0.15 0.75 1.00 0.050
Low C-Ni-
Cr-Mo-Cu
Alloy
N06200 remainder 22.0- 15.0- 3.0 . 0.010 0.08 2.0 0.50 . 0.025 0.010 . 1.3- . 0.50
24.0 17.0 1.9
Low C-Ni-
Mo-Cr Alloy
N10362 remainder 13.8- 21.5- 1.25 . 0.010 0.08 . 0.60 . 0.025 0.010 . . . 0.50 . . . . . . . .
15.6 23.0
Low C-Ni-
Fe-Cr-
Mo-Cu
Alloys
N08031 30.0-32.0 26.0- 6.0- balance . 0.015 0.3 . 2.0 . 0.020 0.010 . 1.0- . . . . 0.15- . . .
28.0 7.0 1.4 0.25
N08034 33.5-35.0 26.0- 6.0- balance . 0.01 0.1 . 1.0- . 0.020 0.010 . 0.5- . 0.3 . . 0.10- . . . . .
27.0 7.0 4.0 1.5 0.25
N08535 29.0-36.5 24.0- 2.5- remainder . 0.03 0.50 . 1.0 . 0.03 0.03 . 1.50
27.0 4.0
Low C-Ni-
Cr-Mo-W
Alloy
N06686 remainder 19.0- 15.0- 5.0 3.0- 0.010 0.08 . 0.75 . 0.04 0.02 0.02- . . . . . . . . .
23.0 17.0 4.4 0.25
Ni-Co-Cr-Si
Alloy
N12160 remainder 26.0- 1.0 3.5 1.0 0.15 2.4- 27.0- 1.5 . 0.030 0.015 0.20- . . . . . . . 1.0 . . .
30.0 max 3.0 33.0 0.80
Cr-Ni-Fe-N
Alloy
R20033 30.0-33.0 31.0- 0.50- balance . 0.015 0.50 . 2.0 . 0.02 0.01 . 0.3- . . . . 0.35- . . . . .
35.0 2.0 1.20 0.60
B622 − 23
TABLE 1 Continued
Composition Limits, %
Cb
P S Cb Ni+
Ni Cr Mo Fe W C Si Co Mn V Ti Cu (Nb) Al Zr La N B Ta Mg
max max (Nb) Mo
+Ta
Low C-Ni-
Mo-Cr-Ta
Alloy
N06210 remainder 18.0- 18.0- 1.0 . 0.015 0.08 1.0 0.5 0.35 0.02 0.02 . . . . . . . 1.5-
20.0 20.0 2.2
A
Values in the table are maximums unless a range or minimum is indicated.

B622 − 23
TABLE 2 Mechanical Properties of Pipe and Tube
5.1.2.1 Tube—Outside diameter, minimum or average wall
thickness, and length. Elongation in 2
Tensile Strength, Yield Strength
in.
5.1.2.2 Pipe—Standard pipe size and schedule (Appendix
Alloy min, ksi (0.2 % Offset)
(50.8 mm) or
(MPa) min, ksi (MPa)
A
X2).
4D, min, %
5.1.3 Ends—Plain ends cut and deburred will be furnished.
Ni-Mo
UNS N10001 100 (690) 45 (310) 40
5.1.4 Certification—State if certification or a report of test
UNS N1
...


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: B622 − 17b B622 − 23
Standard Specification for
Seamless Nickel and Nickel-Cobalt Alloy Pipe and Tube
This standard is issued under the fixed designation B622; 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.
1. Scope*
1.1 This specification covers seamless pipe and tube of nickel and nickel-cobalt alloys. covers seamless pipe and tube of nickel
and nickel-cobalt alloys.
1.2 This specificationAlloys that covers seamless pipe and tube of nickel and nickel-cobalt alloys can currently be certified to this
specification are (UNS N10001, UNS N10242, UNS N10665, UNS N12160, UNS N10675, UNS N10276, UNS N06455, UNS
N06007, UNS N08320, UNS N06975, UNS N06002, UNS N06985, UNS N06022, UNS N06035, UNS N06044, UNS N08135,
UNS N06255, UNS N06058, UNS N06059, UNS N06200, UNS N10362, UNS N06030, UNS N08031, UNS N08034, UNS
R30556, UNS N08535, UNS N06250, UNS N06060, UNS N06230, UNS N06235, UNS N06686, UNS N10629, UNS N06210,
UNS N10624, and UNS R20033) as shown in Table 1.
1.2 Pipe and tube shall be supplied in the solution annealed and descaled condition. When atmosphere control is used, descaling
is not necessary.
1.3 This specification is limited to tubes up to and including 3.5 in. (88.9 mm) outside diameter.
1.3 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.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to become familiar with all hazards including those identified in the appropriate Safety Data Sheet
(SDS) for this product/material as provided by the manufacturer, to establish appropriate safety, health, and environmental
practices, and determine the applicability of regulatory limitations prior to use.
1.5 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:
This specification is under the jurisdiction of ASTM Committee B02 on Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee B02.07 on Refined
Nickel and Cobalt and Their Alloys.
Current edition approved Nov. 1, 2017Dec. 1, 2023. Published November 2017December 2023. Originally approved in 1977. Last previous edition approved in 2017 as
B622 – 17a.B622 – 17b. DOI: 10.1520/B0622-17b.10.1520/B0622-23.
For ASME Boiler and Pressure Vessel Code applications see related Specification SB-622 in Section II of that Code.
Designation established in accordance with Practice E527 and SAE J1086, Practice for Numbering Metals and Alloys (UNS).
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*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
B622 − 23
A
TABLE 1 Chemical Requirements
Composition Limits, %
Cb
Si P S Cb Ni+
Ni Cr Mo Fe W C Co Mn V Ti Cu (Nb) Al Zr La N B Ta Mg
max max max (Nb) Mo
+Ta
Ni-Mo Alloys
N10001 remainder 1.0 26.0- 4.0-6.0 . 0.05 1.0 2.5 1.0 0.2- 0.04 0.03 . . .
A
max 30.0 max max max 0.4
N10001 remainder 1.0 26.0- 4.0-6.0 . 0.05 1.0 2.5 1.0 0.2- 0.04 0.03 . . .
30.0 0.4
N10665 remainder 1.0 26.0- 2.0 max . 0.02 0.10 1.0 1.0 . 0.04 0.03 . . .
A
max 30.0 max max max
N10665 remainder 1.0 26.0- 2.0 . 0.02 0.10 1.0 1.0 . 0.04 0.03 . . .
30.0
N10675 65.0 min 1.0- 27.0- 1.0-3.0 3.0 0.01 0.10 3.0 3.0 0.20 0.030 0.010 0.20 0.20 . 0.50 0.10 . . . 0.20 0.20 94.0-
3.0 32.0 max max max max max max max max max max max 98.0
N10675 65.0 min 1.0- 27.0- 1.0-3.0 3.0 0.01 0.10 3.0 3.0 0.20 0.030 0.010 0.20 0.20 . 0.50 0.10 . . . 0.20 0.20 94.0-
3.0 32.0 98.0
N10629 remainder 0.5- 26.0- 1.0-6.0 . 0.01 0.05 2.5 1.5 . 0.04 0.01 . 0.5 . 0.1- . . . . . . .
A
1.5 30.0 max max max max 0.5
N10629 remainder 0.5- 26.0- 1.0-6.0 . 0.01 0.05 2.5 1.5 . 0.04 0.01 . 0.5 . 0.1- . . . . . . .
1.5 30.0 0.5
N10624 remainder 6.0- 21.0- 5.0-8.0 . 0.01 0.10 1.0 1.0 . 0.025 0.01 . 0.5 . . . . . . . . .
A
10.0 25.0 max max max max
N10624 remainder 6.0- 21.0- 5.0-8.0 . 0.01 0.10 1.0 1.0 . 0.025 0.01 . 0.5 . . . . . . . . .
10.0 25.0
Ni-Mo-Cr-Fe
Alloy
N10242 remainder 7.0- 24.0- 2.0 max 0.03 0.80 1.00 0.80 0.030 0.015 0.50 0.50 0.006
A
9.0 26.0 max max max max max max
N10242 remainder 7.0- 24.0- 2.0 0.03 0.80 1.00 0.80 0.030 0.015 0.50 0.50 0.006
9.0 26.0
Low C Ni-
Cr-Mo Alloys
N10276 remainder 14.5- 15.0- 4.0-7.0 3.0- 0.010 0.08 2.5 1.0 0.35 0.04 0.03 . . .
A
16.5 17.0 4.5 max max max max
N10276 remainder 14.5- 15.0- 4.0-7.0 3.0- 0.010 0.08 2.5 1.0 0.35 0.04 0.03 . . .
16.5 17.0 4.5
N06022 remainder 20.0- 12.5- 2.0-6.0 2.5- 0.015 0.08 2.5 0.50 0.35 0.02 0.02 . . .
A
22.5 14.5 3.5 max max max max
N06022 remainder 20.0- 12.5- 2.0-6.0 2.5- 0.015 0.08 2.5 0.50 0.35 0.02 0.02 . . .
22.5 14.5 3.5
N06035 remainder 32.25- 7.60- 2.00 max 0.60 0.050 0.60 1.00 0.50 0.20 0.030 0.015 . 0.30 . 0.40 . . . . . . . .
A
34.25 9.00 max max max max max max max
N06035 remainder 32.25- 7.60- 2.00 0.60 0.050 0.60 1.00 0.50 0.20 0.030 0.015 . 0.30 . 0.40 . . . . . . . .
34.25 9.00
N06044 balance 43.5- 0.80- 0.3 max . 0.02 0.20 . 0.07- . 0.020 0.020 0.10- . . 0.30 . . . . . . . .
45.3 1.20 max 0.30 0.30 max
N06044 balance 43.5- 0.80- 0.3 . 0.02 0.20 . 0.07- . 0.020 0.020 0.10- . . 0.30 . . . . . . . .
45.3 1.20 0.30 0.30
N06058 balance 20.0- 18.5- 1.5 max 0.3 0.010 0.10 0.3 0.50 0.015 0.010 . 0.50 . 0.40 0.02-
23.0 21.0 max max max max max max max 0.15
N06058 balance 20.0- 18.5- 1.5 0.3 0.010 0.10 0.3 0.50 0.015 0.010 . 0.50 . 0.40 0.02-
23.0 21.0 0.15
N06059 balance 22.0- 15.0- 1.5 max . 0.010 0.10 0.3 0.5 . 0.015 0.010 . 0.50 . 0.1- . . . . . . .
24.0 16.5 max max max max 0.4
N06059 balance 22.0- 15.0- 1.5 . 0.010 0.10 0.3 0.5 . 0.015 0.010 . 0.50 . 0.1- . . . . . . .
24.0 16.5 0.4
B622 − 23
TABLE 1 Continued
Composition Limits, %
Cb
Si P S Cb Ni+
Ni Cr Mo Fe W C Co Mn V Ti Cu (Nb) Al Zr La N B Ta Mg
max max max (Nb) Mo
+Ta
N06455 remainder 14.0- 14.0- 3.0 max . 0.015 0.08 2.0 1.0 . 0.04 0.03 0.70 . .
A
18.0 17.0 max max max max
N06455 remainder 14.0- 14.0- 3.0 . 0.015 0.08 2.0 1.0 . 0.04 0.03 0.70 . .
18.0 17.0
Ni-Cr-Fe-
Mo-Cu
Alloys
N06007 remainder 21.0- 5.5- 18.0-21.0 1.0 0.05 1.0 2.5 1.0- . 0.04 0.03 . 1.5- 1.75-
A
23.5 7.5 max max max 2.0 2.5 2.5
N06007 remainder 21.0- 5.5- 18.0-21.0 1.0 0.05 1.0 2.5 1.0- . 0.04 0.03 . 1.5- 1.75-
23.5 7.5 2.0 2.5 2.5
N06975 47.0-52.0 23.0- 5.0- remainder . 0.03 1.0 . 1.0 . 0.03 0.03 0.70- 0.70- .
A
26.0 7.0 max max 1.50 1.20
N06975 47.0-52.0 23.0- 5.0- remainder . 0.03 1.0 . 1.0 . 0.03 0.03 0.70- 0.70- .
26.0 7.0 1.50 1.20
N06985 remainder 21.0- 6.0- 18.0-21.0 1.5 0.015 1.0 5.0 1.0 . 0.04 0.03 . 1.5- 0.50
A
23.5 8.0 max max max max 2.5 max
N06985 remainder 21.0- 6.0- 18.0-21.0 1.5 0.015 1.0 5.0 1.0 . 0.04 0.03 . 1.5- 0.50
23.5 8.0 2.5
N06030 remainder 28.0- 4.0- 13.0-17.0 1.5- 0.03 0.8 5.0 1.5 . 0.04 0.02 . 1.0- 0.30-
A
31.5 6.0 4.0 max max max 2.4 1.50
N06030 remainder 28.0- 4.0- 13.0-17.0 1.5- 0.03 0.8 5.0 1.5 . 0.04 0.02 . 1.0- 0.30-
31.5 6.0 4.0 2.4 1.50
N06255 47.0-52.0 23.0- 6.0- remainder 3.0 0.03 1.0 . 1.0 . 0.03 0.03 0.69 1.2 .
A
26.0 9.0 max max max max max
N06255 47.0-52.0 23.0- 6.0- remainder 3.0 0.03 1.0 . 1.0 . 0.03 0.03 0.69 1.2 .
26.0 9.0
N06250 50.0-54.0 20.0- 10.1- remainder 0.25- 0.020 0.09 . 1.00 . 0.030 0.005 . 0.25- .
A
23.0 12.0 1.25 max max 1.25
N06250 50.0-54.0 20.0- 10.1- remainder 0.25- 0.020 0.09 . 1.00 . 0.030 0.005 . 0.25- .
23.0 12.0 1.25 1.25
Ni-Fe-Cr-Mo
Alloys
N08320 25.0-27.0 21.0- 4.0- remainder . 0.05 1.0 . 2.5 . 0.04 0.03 4xC . .
A
23.0 6.0 max max min
N08320 25.0-27.0 21.0- 4.0- remainder . 0.05 1.0 . 2.5 . 0.04 0.03 4xC . .
23.0 6.0 min
N08135 33.0-38.0 20.5- 4.0- remainder 0.20- 0.030 0.75 . 1.00 . 0.03 0.03 .
A
23.5 5.0 0.80 max max
N08135 33.0-38.0 20.5- 4.0- remainder 0.20- 0.030 0.75 . 1.00 . 0.03 0.03 .
23.5 5.0 0.80
Ni-Cr-Fe-Mo
Alloys
N06002 remainder 20.5- 8.0- 17.0-20.0 0.20- 0.05- 1.0 0.5- 1.0 . 0.04 0.03 . . .
A
23.0 10.0 1.0 0.15 2.5 max
N06002 remainder 20.5- 8.0- 17.0-20.0 0.20- 0.05- 1.0 0.5- 1.0 . 0.04 0.03 . . .
23.0 10.0 1.0 0.15 2.5
N06060 54.0–60.0 19.0- 12.0- remainder 0.25- 0.03 0.50 . 1.50 . 0.030 0.005 . 0.25- 0.50-
A
22.0 14.0 1.25 max max max max 1.25 1.25
N06060 54.0–60.0 19.0- 12.0- remainder 0.25- 0.03 0.50 . 1.50 . 0.030 0.005 . 0.25- 0.50-
22.0 14.0 1.25 1.25 1.25
Ni-Cr-Mo-Cu
Alloy
B622 − 23
TABLE 1 Continued
Composition Limits, %
Cb
Si P S Cb Ni+
Ni Cr Mo Fe W C Co Mn V Ti Cu (Nb) Al Zr La N B Ta Mg
max max max (Nb) Mo
+Ta
N06235 remainder 30.0- 5.0- 1.5 0.60 0.02- 0.2- 1.0 0.3- . 0.03 0.015 0.5 3.5- . 0.2- . . . . 1.0 . . .
32.5 6.2 0.06 0.6 0.65 4.0 0.4
Ni-Fe-Cr-Co
Alloy
R30556 19.0-22.5 21.0- 2.5- remainder 2.0- 0.05- 0.20- 16.0- 0.50- . 0.04 0.015 . . . 0.10- 0.001- 0.005- 0.10- 0.02 0.30 0.3-
A
23.0 4.0 3.5 0.15 0.80 21.0 2.00 0.50 0.10 0.10 0.30 max max 1.25
R30556 19.0-22.5 21.0- 2.5- remainder 2.0- 0.05- 0.20- 16.0- 0.50- . 0.04 0.015 . . . 0.10- 0.001- 0.005- 0.10- 0.02 0.30 0.3-
23.0 4.0 3.5 0.15 0.80 21.0 2.00 0.50 0.10 0.10 0.30 1.25
Ni-Cr-W-Mo
Alloys
N06230 remainder 20.0- 1.0- 3.0 max 13.0- 0.05- 0.25- 5.0 0.30- . 0.03 0.015 . . . 0.50 . 0.005- . 0.015 . .
A
24.0 3.0 15.0 0.15 0.75 max 1.00 max 0.050 max
N06230 remainder 20.0- 1.0- 3.0 13.0- 0.05- 0.25- 5.0 0.30- . 0.03 0.015 . . . 0.50 . 0.005- . 0.015 . .
24.0 3.0 15.0 0.15 0.75 1.00 0.050
Low C-Ni-
Cr-Mo-Cu
Alloy
N06200 remainder 22.0- 15.0- 3.0 max . 0.010 0.08 2.0 0.50 . 0.025 0.010 . 1.3- . 0.50
A
24.0 17.0 max max max 1.9 max
N06200 remainder 22.0- 15.0- 3.0 . 0.010 0.08 2.0 0.50 . 0.025 0.010 . 1.3- . 0.50
24.0 17.0 1.9
Low C-Ni-
Mo-Cr Alloy
N10362 remainder 13.8- 21.5- 1.25 max . 0.010 0.08 . 0.60 . 0.025 0.010 . . . 0.50 . . . . . . . .
A
15.6 23.0 max max max
N10362 remainder 13.8- 21.5- 1.25 . 0.010 0.08 . 0.60 . 0.025 0.010 . . . 0.50 . . . . . . . .
15.6 23.0
Low C-Ni-
Fe-Cr-
Mo-Cu
Alloys
N08031 30.0-32.0 26.0- 6.0- balance . 0.015 0.3 . 2.0 . 0.020 0.010 . 1.0- . . . . 0.15- . . .
28.0 7.0 max max 1.4 0.25
N08031 30.0-32.0 26.0- 6.0- balance . 0.015 0.3 . 2.0 . 0.020 0.010 . 1.0- . . . . 0.15- . . .
28.0 7.0 1.4 0.25
N08034 33.5-35.0 26.0- 6.0- balance . 0.01 0.1 . 1.0- . 0.020 0.010 . 0.5- . 0.3 . . 0.10- . . . . .
27.0 7.0 max 4.0 1.5 max 0.25
N08034 33.5-35.0 26.0- 6.0- balance . 0.01 0.1 . 1.0- . 0.020 0.010 . 0.5- . 0.3 . . 0.10- . . . . .
27.0 7.0 4.0 1.5 0.25
N08535 29.0-36.5 24.0- 2.5- remainder . 0.03 0.50 . 1.0 . 0.03 0.03 . 1.50
A
27.0 4.0 max max max
N08535 29.0-36.5 24.0- 2.5- remainder . 0.03 0.50 . 1.0 . 0.03 0.03 . 1.50
27.0 4.0
Low C-Ni-
Cr-Mo-W
Alloy
N06686 remainder 19.0- 15.0- 5.0 max 3.0- 0.010 0.08 . 0.75 . 0.04 0.02 0.02- . . . . . . . . .
A
23.0 17.0 4.4 max max 0.25
N06686 remainder 19.0- 15.0- 5.0 3.0- 0.010 0.08 . 0.75 . 0.04 0.02 0.02- . . . . . . . . .
23.0 17.0 4.4 0.25
Ni-Co-Cr-Si
Alloy
B622 − 23
TABLE 1 Continued
Composition Limits, %
Cb
Si P S Cb Ni+
Ni Cr Mo Fe W C Co Mn V Ti Cu (Nb) Al Zr La N B Ta Mg
max max max (Nb) Mo
+Ta
N12160 remainder 26.0- 1.0 3.5 max 1.0 0.15 2.4- 27.0- 1.5 . 0.030 0.015 0.20- . . . . . . . 1.0 . . .
A
30.0 max max max 3.0 33.0 max 0.80 max
N12160 remainder 26.0- 1.0 3.5 1.0 0.15 2.4- 27.0- 1.5 . 0.030 0.015 0.20- . . . . . . . 1.0 . . .
30.0 max 3.0 33.0 0.80
Cr-Ni-Fe-N
Alloy
R20033 30.0-33.0 31.0- 0.50- balance . 0.015 0.50 . 2.0 . 0.02 0.01 . 0.3- . . . . 0.35- . . . . .
35.0 2.0 max max 1.20 0.60
R20033 30.0-33.0 31.0- 0.50- balance . 0.015 0.50 . 2.0 . 0.02 0.01 . 0.3- . . . . 0.35- . . . . .
35.0 2.0 1.20 0.60
...

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