ASTM B625-21

Standard Specification for Ni-Fe-Cr-Mo-Cu-N Low-Carbon Alloy, Ni-Fe-Cr-Si Alloy, <brk />Cr-Ni-Fe-N Low-Carbon Alloy, Fe-Ni-Cr-Mo-Cu-N Alloy, and <brk/>Ni-Fe-Cr-Mo-N Alloy Plate, Sheet, and Strip

ABSTRACT
This specification covers alloys UNS N08925, UNS N08031, UNS N08932, UNS N08926, UNS N08354, and UNS R20033 plate, sheet, and strip in the annealed temper. The alloys shall conform to the required chemical composition such as carbon, manganese, phosphorus, sulfur, silicon, nickel, chromium, molybdenum, copper, nitrogen, and iron. The alloys shall also conform to the required mechanical properties such as tensile strength, yield strength, elongation, and Rockwell hardness.
SCOPE
1.1 This specification covers nickel-iron-chromium-molybdenum-copper-nitrogen low-carbon alloy, nickel-iron-chromium-silicon alloy, chromium-nickel-iron-nitrogen low-carbon alloy, iron-nickel-chromium-molybdenum-copper-nitrogen alloy, and nickel-iron-chromium-molybdenum-nitrogen alloy plate, sheet, and strip in the annealed temper.  
1.2 ASTM International has adopted definitions whereby some grades, such as UNS N08904, previously in this specification were recognized as stainless steels, because those grades have iron as the largest element by mass percent. Such grades are under the oversight of ASTM Committee A01 and its subcommittees. The products of N08904 previously covered in this specification are now covered by Specifications A240/A240M and A480/A480M.  
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: 31-Oct-2021
• ICS: 77.150.40 - Nickel and chromium products
• Technical Committee: B02 - Nonferrous Metals and Alloys
• Drafting Committee: B02.07 - Refined Nickel and Cobalt and Their Alloys

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:B625 −21
Standard Specification for
Ni-Fe-Cr-Mo-Cu-N Low-Carbon Alloy, Ni-Fe-Cr-Si Alloy,
Cr-Ni-Fe-N Low-Carbon Alloy, Fe-Ni-Cr-Mo-Cu-N Alloy, and
1
Ni-Fe-Cr-Mo-N Alloy Plate, Sheet, and Strip
This standard is issued under the fixed designation B625; 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
1.1 This specification covers nickel-iron-chromium- 2.1 ASTM Standards:
molybdenum-copper-nitrogen low-carbon alloy, nickel-iron- A240/A240M Specification for Chromium and Chromium-
chromium-silicon alloy, chromium-nickel-iron-nitrogen low- Nickel Stainless Steel Plate, Sheet, and Strip for Pressure
carbon alloy, iron-nickel-chromium-molybdenum-copper- Vessels and for General Applications
nitrogen alloy, and nickel-iron-chromium-molybdenum- A480/A480M Specification for General Requirements for
nitrogen alloy plate, sheet, and strip in the annealed temper. Flat-Rolled Stainless and Heat-Resisting Steel Plate,
Sheet, and Strip
1.2 ASTM International has adopted definitions whereby
B906 Specification for General Requirements for Flat-
some grades, such as UNS N08904, previously in this speci-
Rolled Nickel and Nickel Alloys Plate, Sheet, and Strip
fication were recognized as stainless steels, because those
E527 Practice for Numbering Metals and Alloys in the
grades have iron as the largest element by mass percent. Such
Unified Numbering System (UNS)
grades are under the oversight of ASTM Committee A01 and
itssubcommittees.TheproductsofN08904previouslycovered
3. Terminology
in this specification are now covered by Specifications A240/
3.1 Definitions of Terms Specific to This Standard:
A240M and A480/A480M.
3
3.1.1 plate, n—material ⁄16 in. (4.76 mm) and over in
1.3 The values stated in inch-pound units are to be regarded
thickness and over 10 in. (254 mm) in width.
as standard. The values given in parentheses are mathematical
3
3.1.2 sheet, n—materialunder ⁄16in.(4.76mm)inthickness
conversions to SI units that are provided for information only
3
and 24 in. (609.6 mm) and over in width. Material under ⁄16 in.
and are not considered standard.
(4.75 mm) in thickness and in all widths with No. 4 finish.
1.4 This standard does not purport to address all of the
3
3.1.3 strip, n—material under ⁄16 in. (4.76 mm) in thickness
safety concerns, if any, associated with its use. It is the
and under 24 in. (609.6 mm) in width.
responsibility of the user of this standard to become familiar
with all hazards including those identified in the appropriate
4. General Requirements
Safety Data Sheet (SDS) for this product/material as provided
by the manufacturer, to establish appropriate safety, health, 4.1 Material furnished in accordance with this specification
shall conform to the applicable requirements of the current
and environmental practices, and determine the applicability
edition of Specification B906 unless otherwise provided
of regulatory limitations prior to use.
herein.
1.5 This international standard was developed in accor-
dance with internationally recognized principles on standard-
5. Ordering Information
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
5.1 Orders for material under this specification shall include
mendations issued by the World Trade Organization Technical
the following information:
Barriers to Trade (TBT) Committee.
5.1.1 Quantity (weight or number of pieces),
5.1.2 Alloy name or UNS number,
5.1.3 Form—Plate, sheet, or strip,
1
This specification is under the jurisdiction of ASTM Committee B02 on
Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee
2
B02.07 on Refined Nickel and Cobalt and Their Alloys. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Nov. 1, 2021. Published November 2021. Originally contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
approved in 1977. Last previous edition approved in 2017 as B625 – 17. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/B0625-21. 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
1

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B625−21
A
TABLE 1 Chemical Requirements
UNS UNS UNS UNS UNS UNS UNS UNS UNS
...

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: B625 − 17 B625 − 21
Standard Specification for
UNS N08925, UNS N08031, UNSNi-Fe-Cr-Mo-Cu-N Low-
Carbon Alloy, Ni-Fe-Cr-Si Alloy,
N08034, UNS N08932, UNS N08926, UNS N08354, UNS
N08830, Cr-Ni-Fe-N Low-Carbon Alloy, Fe-Ni-Cr-Mo-Cu-N
Alloy, and
1
UNS R20033Ni-Fe-Cr-Mo-N Alloy Plate, Sheet, and Strip
This standard is issued under the fixed designation B625; 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 alloys UNS N08925, UNS N08031, UNS N08034, UNS N08932, UNS N08926, UNS N08354, UNS
N08830, and UNS R20033nickel-iron-chromium-molybdenum-copper-nitrogen low-carbon alloy, nickel-iron-chromium-silicon
alloy, chromium-nickel-iron-nitrogen low-carbon alloy, iron-nickel-chromium-molybdenum-copper-nitrogen alloy, and nickel-
iron-chromium-molybdenum-nitrogen alloy plate, sheet, and strip in the annealed temper.
1.2 ASTM International has adopted definitions whereby some grades, such as UNS N08904, previously in this specification were
recognized as stainless steels, because those grades have iron as the largest element by mass percent. Such grades are under the
oversight of ASTM Committee A01 and its subcommittees. The products of N08904 previously covered in this specification are
now covered by Specifications A240/A240M and A480/A480M.
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
2.1 ASTM Standards:
1
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 July 1, 2017Nov. 1, 2021. Published August 2017November 2021. Originally approved in 1977. Last previous edition approved in 20142017
as B625 – 14.B625 – 17. DOI: 10.1520/B0625-17.10.1520/B0625-21.
2
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.
*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
1

---------------------- Page: 1 ----------------------
B625 − 21
A240/A240M Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and
for General Applications
A480/A480M Specification for General Requirements for Flat-Rolled Stainless and Heat-Resisting Steel Plate, Sheet, and Strip
B906 Specification for General Requirements for Flat-Rolled Nickel and Nickel Alloys Plate, Sheet, and Strip
E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3
3.1.1 plate, n—material ⁄16 in. (4.76 mm) and over in thickness and over 10 in. (254 mm) in width.
3 3
3.1.2 sheet, n—material under ⁄16 in. (4.76 mm) in thickness and 24 in. (609.6 mm) and over in width. Material under ⁄16 in. (4.75
mm) in thickness and in all widths with No. 4 finish.
3
3.1.3 strip, n—material under ⁄16 in. (4.76 mm) in thickness and under 24 in. (609.6 mm) in width.
4. General Requirements
4.1 Material furnished in accordance with this specification shall conform to the applicab
...