ASTM B815-24
(Specification)Standard Specification for Cobalt-Chromium-Nickel-Molybdenum-Tungsten Alloy Bar or Rod
Standard Specification for Cobalt-Chromium-Nickel-Molybdenum-Tungsten Alloy<brk/> Bar or Rod
ABSTRACT
This specification covers cobalt-chromium-nickel-molybdenum-tungsten alloy (UNS R31233) in the form of a rod for wear applications and general corrosion service. The requirements for the chemical composition hardness and tolerance, tensile strength, yield strength, and elongation are specified.
SCOPE
1.1 This specification2 covers cobalt-chromium-nickel-molybdenum-tungsten alloy in the form of bar or rod. While the alloy is typically used for wear applications and general corrosion service, it is not limited to this usage.
1.2 UNS R31233 is the only alloy currently allowed to be certified to this specification.
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.
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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: B815 − 24
Standard Specification for
Cobalt-Chromium-Nickel-Molybdenum-Tungsten Alloy
1
Bar or Rod
This standard is issued under the fixed designation B815; 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* B899 Terminology Relating to Non-ferrous Metals and Al-
2 loys
1.1 This specification covers cobalt-chromium-nickel-
E8/E8M Test Methods for Tension Testing of Metallic Ma-
molybdenum-tungsten alloy in the form of bar or rod. While
terials
the alloy is typically used for wear applications and general
E29 Practice for Using Significant Digits in Test Data to
corrosion service, it is not limited to this usage.
Determine Conformance with Specifications
1.2 UNS R31233 is the only alloy currently allowed to be
E55 Practice for Sampling Wrought Nonferrous Metals and
certified to this specification.
Alloys for Determination of Chemical Composition
1.3 The values stated in inch-pound units are to be regarded E1473 Test Methods for Chemical Analysis of Nickel,
Cobalt, and High-Temperature Alloys
as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only
and are not considered standard. 3. Terminology
1.4 This standard does not purport to address all of the
3.1 Common B02.07 terminology is found in Terminology
safety concerns, if any, associated with its use. It is the
B899.
responsibility of the user of this standard to become familiar
3.2 Definitions of Terms Specific to This Standard:
with all hazards including those identified in the appropriate
3.2.1 bar, n—an elongated, forged, or rolled metal product
Safety Data Sheet (SDS) for this product/material as provided
with uniform strength, length and diameter.
by the manufacturer, to establish appropriate safety, health,
3.2.2 rod, n—a hot-finished product of round solid section
and environmental practices, and determine the applicability
furnished in straight lengths.
of regulatory limitations prior to use.
1.5 This international standard was developed in accor-
4. Ordering Information
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
4.1 It is the responsibility of the purchaser to specify all
Development of International Standards, Guides and Recom-
requirements that are necessary for material ordered under this
mendations issued by the World Trade Organization Technical
specification.
Barriers to Trade (TBT) Committee.
4.2 Examples of such requirements include, but are not
2. Referenced Documents limited to, the following:
3 4.2.1 Dimensions—Section 8.
2.1 ASTM Standards:
4.2.2 Purchaser Inspection—Section 13.
B880 Specification for General Requirements for Chemical
4.2.3 Samples for Product (Check) Analysis—Section 10.
Check Analysis Limits for Nickel, Nickel Alloys and
Cobalt Alloys
5. Materials and Manufacture
1
This specification is under the jurisdiction of ASTM Committee B02 on
5.1 The finish options for products certified to this specifi-
Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee
cation are:
B02.07 on Refined Nickel and Cobalt and Their Alloys.
5.1.1 Hot-Finished, Annealed, and Descaled Rod.
Current edition approved April 1, 2024. Published April 2024. Originally
approved in 1991. Last previous edition approved in 2016 as B815 – 02 (2016). 5.1.2 Hot-Finished, Annealed, and Ground Bar.
DOI: 10.1520/B0815-24.
5.1.3 Hot-Finished, Annealed, and Turned Bar.
2
For ASME Boiler and Pressure Vessel Code applications, see related Specifi-
5.1.4 Cold-Finished and Annealed Bar.
cation SB-815 in Section II of that code.
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 5.1.5 Cold-Finished, Annealed, and Ground Bar.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
5.2 The diameters permitted for certification for each finish
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. appear in the left column of Table 3.
*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 ----------------------
B815 − 24
A
TABLE 1 Chemical Requirements
8.5.2 Rods or bars ordered to cut lengths shall be furnished
Element Composition Limits, %
with square saw cut or machined ends.
Boron 0.015
8.6 Weight
...
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: B815 − 02 (Reapproved 2016) B815 − 24
Standard Specification for
Cobalt-Chromium-Nickel-Molybdenum-Tungsten Alloy
1
(UNS R31233)Bar or Rod
This standard is issued under the fixed designation B815; 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 Scope*
2
1.1 This specification covers cobalt-chromium-nickel-molybdenum-tungsten alloy UNS R31233 in the form of rod bar or rod.
While the alloy is typically used for wear applications and general corrosion service.service, it is not limited to this usage.
1.2 The following products are covered under this specification:UNS R31233 is the only alloy currently allowed to be certified
to this specification.
3 3
1.2.1 Rods ⁄16 to ⁄4 in. (9.76 to 19.05 mm) exclusive in diameter, hot or cold finished, solution-annealed, and pickled or
mechanically descaled; and
3 1
1.2.2 Rods ⁄4 to 3 ⁄2 in. (19.05 to 88.9 mm) inclusive in diameter, hot or cold finished, solution annealed, ground, or turned.
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 and healthsafety, 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
3
2.1 ASTM Standards:
B880 Specification for General Requirements for Chemical Check Analysis Limits for Nickel, Nickel Alloys and Cobalt Alloys
B899 Terminology Relating to Non-ferrous Metals and Alloys
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
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 June 1, 2016April 1, 2024. Published June 2016April 2024. Originally approved in 1991. Last previous edition approved in 20112016 as
B815 – 02 (2011).(2016). DOI: 10.1520/B0815-02R16.10.1520/B0815-24.
2
For ASME Boiler and Pressure Vessel Code applications, see related Specification SB-815 in Section II of that code.
3
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
1
---------------------- Page: 1 ----------------------
B815 − 24
E55 Practice for Sampling Wrought Nonferrous Metals and Alloys for Determination of Chemical Composition
E1473 Test Methods for Chemical Analysis of Nickel, Cobalt, and High-Temperature Alloys
3. Terminology
3.1 Common B02.07 terminology is found in Terminology B899.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 bar, n—an elongated, forged, or rolled metal product with uniform strength, length and diameter.
3.2.2 rod, n—a hot-finished product of round solid section furnished in straight lengths.
4. Ordering Information
4.1 It is the responsibility of the purchaser to specify all requirements that are necessary for material ordered under this
specification.
4.2 It is the responsibility of the purchaser to specify all requirements that are necessary for material ordered under this
specification. Examples of such requirements include, but are not limited
...
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