ASTM B818-03(2018)

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:B818 −03 (Reapproved 2018)
Standard Specification for
Cobalt-Chromium-Nickel-Molybdenum-Tungsten Alloy
(UNS R31233) Plate, Sheet and Strip
This standard is issued under the fixed designation B818; 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 B906 Specification for General Requirements for Flat-
Rolled Nickel and Nickel Alloys Plate, Sheet, and Strip
1.1 This specification covers cobalt-chromium-nickel-
molybdenum-tungsten alloy UNS R31233 in the form of rolled
3. Terminology
plate, sheet, and strip for wear applications and general
corrosion service. 3.1 Definitions of Terms Specific to This Standard:
3.1.1 plate—material ⁄16 in. (4.76 mm) and over in thick-
1.2 The following products are covered under this specifi-
ness.
cation:
1.2.1 Sheet and Strip—Hot or cold rolled, annealed and
3.1.2 sheet and strip—material under ⁄16 in. (4.76 mm) in
descaled unless solution-annealing is performed in an atmo-
thickness.
sphere yielding a bright finish.
1.2.2 Plate—Hot rolled, solution-annealed, and descaled.
4. General Requirements
1.3 The values stated in inch-pound units are to be regarded
4.1 Material furnished under this specification shall con-
as standard. The values given in parentheses are mathematical
form to the applicable requirements of Specification B906
conversions to SI units that are provided for information only
unless otherwise provided herein.
and are not considered standard.
1.4 This standard does not purport to address all of the
5. Ordering Information
safety concerns, if any, associated with its use. It is the
5.1 It is the responsibility of the purchaser to specify all
responsibility of the user of this standard to become familiar
requirements that are necessary for material ordered under this
with all hazards including those identified in the appropriate
specification. Examples of such requirements include, but are
Safety Data Sheet (SDS) for this product/material as provided
not limited to, the following:
by the manufacturer, to establish appropriate safety, health,
5.1.1 Alloy.
and environmental practices, and determine the applicability
of regulatory limitations prior to use. 5.1.2 Dimensions—Thickness (in decimals of an inch),
1.5 This international standard was developed in accor- width, and length (inch or fraction of an inch).
dance with internationally recognized principles on standard-
5.1.3 Certification—State if a report of test results is re-
ization established in the Decision on Principles for the
quired (see Specification B906, Section 21).
Development of International Standards, Guides and Recom-
5.1.4 Optional Requirement—Plate; state how plate is to be
mendations issued by the World Trade Organization Technical
cut (see Specification B906, Table A2.3).
Barriers to Trade (TBT) Committee.
5.1.5 Purchase Inspection—State which tests or inspections
are to be witnessed (see Specification B906, Section 18).
2. Referenced Documents
5.1.6 Samples, for Product (Check) Analysis—State whether
2.1 ASTM Standards:
samples should be furnished (see Specification B906, Section
7.2.2).
This specification is under the jurisdiction of ASTM Committee B02 on
Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee
6. Chemical Composition
B02.07 on Refined Nickel and Cobalt and Their Alloys.
Current edition approved Nov. 1, 2018. Published November 2018. Originally
6.1 The material shall conform to the requirements as to
approved in 1991. Last previous edition approved in 2013 as B818 – 03 (2013).
chemical composition prescribed in Table 1.
DOI: 10.1520/B0818-03R18.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
6.2 If a product (check) analysis is made by the purchaser,
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
the material shall conform to the requirements specified in
Standards volume information, refer to the standard’s Document Summary page on
the ASTM webs
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