ASTM B815-02(2006)
(Specification)Standard Specification for Cobalt-Chromium-Nickel-Molybdenum-Tungsten Alloy (UNS R31233) Rod
Standard Specification for Cobalt-Chromium-Nickel-Molybdenum-Tungsten Alloy (UNS R31233) 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 specification covers cobalt-chromium-nickel-molybdenum-tungsten alloy UNS R31233 in the form of rod for wear applications and general corrosion service.
1.2 The following products are covered under this specification:
1.2.1 Rods 3/16 to 3/4 in. (9.76 to 19.05 mm) exclusive in diameter, hot or cold finished, solution-annealed, and pickled or mechanically descaled; and
1.2.2 Rods 3/4 to 31/2 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 the standard. The values given in parentheses are for information only.
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 Material Safety Data Sheet (MSDS) for this product/material as provided by the manufacturer, to establish appropriate safety and health practices, and determine the applicability of regulatory limitations prior to use.
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: B815 – 02 (Reapproved 2006)
Standard Specification for
Cobalt-Chromium-Nickel-Molybdenum-Tungsten Alloy
(UNS R31233) 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 E29 Practice for Using Significant Digits in Test Data to
2 Determine Conformance with Specifications
1.1 This specification covers cobalt-chromium-nickel-
E55 Practice for Sampling Wrought Nonferrous Metals and
molybdenum-tungsten alloy UNS R31233 in the form of rod
Alloys for Determination of Chemical Composition
for wear applications and general corrosion service.
E1473 Test Methods for Chemical Analysis of Nickel,
1.2 The following products are covered under this specifi-
Cobalt, and High-Temperature Alloys
cation:
3 3
1.2.1 Rods ⁄16 to ⁄4 in. (9.76 to 19.05 mm) exclusive in
3. Terminology
diameter, hot or cold finished, solution-annealed, and pickled
3.1 Definitions of Terms Specific to This Standard:
or mechanically descaled; and
3.1.1 rod, n—product of round solid section furnished in
3 1
1.2.2 Rods ⁄4 to 3 ⁄2 in. (19.05 to 88.9 mm) inclusive in
straight lengths.
diameter, hot or cold finished, solution annealed, ground, or
turned.
4. Ordering Information
1.3 The values stated in inch-pound units are to be regarded
4.1 It is the responsibility of the purchaser to specify all
as the standard. The values given in parentheses are for
requirements that are necessary for material ordered under this
information only.
specification. Examples of such requirements include, but are
1.4 This standard does not purport to address all of the
not limited to, the following:
safety concerns, if any, associated with its use. It is the
4.1.1 Alloy.
responsibility of the user of this standard to become familiar
4.1.2 Dimensions—Nominal diameter and length. The
with all hazards including those identified in the appropriate
shortest usable multiple length shall be specified (Table 1).
Material Safety Data Sheet (MSDS) for this product/material
4.1.3 Certification— State whether certification or a report
as provided by the manufacturer, to establish appropriate
of test results is required (Section 15).
safety and health practices, and determine the applicability of
4.1.4 Purchaser Inspection—State which tests or inspec-
regulatory limitations prior to use.
tions are to be witnessed (Section 13).
4.1.5 Samples for Product (Check) Analysis—State whether
2. Referenced Documents
3 samples should be furnished (9.2.2).
2.1 ASTM Standards:
B880 Specification for General Requirements for Chemical
5. Chemical Composition
Check Analysis Limits for Nickel, Nickel Alloys and
5.1 The material shall conform to the chemical composition
Cobalt Alloys
requirements prescribed in Table 2.
E8 Test Methods for Tension Testing of Metallic Materials
5.2 If a product (check) analysis is made by the purchaser,
the material shall conform to the requirements specified in
1 Table 2 subject to the permissible tolerances given in Specifi-
This specification is under the jurisdiction of ASTM Committee B02 on
cation B880.
Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee
B02.07 on Refined Nickel and Cobalt and Their Alloys.
Current edition approved Dec. 1, 2006. Published December 2006. Originally
6. Mechanical Properties and Other Requirements
approved in 1991. Last previous edition approved in 2002 as B815 – 02. DOI:
6.1 The mechanical properties of the material at room
10.1520/B0815-02R06.
For ASME Boiler and Pressure Vessel Code applications, see related Specifi- temperature shall conform to those given in Table 3.
cation SB-815 in Section II of that code.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
7. Dimensions, Mass, and Permissible Variations
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
7.1 Diameter—The permissible variations from the speci-
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. fied diameter shall be as prescribed in Table 4.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
B815 – 02 (2006)
TABLE 1 Permissible Variations in Length of Rods
7.7 Straightness— The maximum curvature (depth of
Random mill lengths 2 to 12 ft (610 to 3660 mm) long with not more than chord)shallnotexceed0.050in.multipliedbythelengthofthe
25 weight % under 4 ft (1.22 m).
chordinfeet(0.04mmmultipliedbythelengthincentimetres).
Multiple lengths Furnished in multiples of a specified unit length,
within the length limits indicated above. For
8. Workmanship, Finish, and Appearance
each multiple, an allowance of ⁄4 in. (6.35 mm)
shall be made for cutting, unless otherwise specified.
8.1 The material shall be uniform in quality and condition,
At the manufacturer’s option, individual specified
unit lengths may be furnished. smooth, and free of injurious defects.
Nominal lengths Specified nominal lengths having a range of not less
than 2 ft (610 mm) with no short lengths allowed.
9. Sampling
Cut lengths A specified length to which all rods shall be cut with
a permissible variation of + ⁄8 in. (3.17 mm) − 0.
9.1 Lots for Chemical and Mechanical Testing:
9.1.1 A lot for chemical analysis shall consist of one heat.
9.1.2 A lot of bar for mechanical testing shall be defined as
TABLE 2 Chemical Requirements
the material from one heat in the same condition and specified
Element Composition Limits, %
diameter.
Boron 0.015 max
9.2 Sampling for Chemical Analysis:
Carbon 0.02–0.10
9.2.1 A representative sample shall be obtained from each
Chromium 23.5–27.5
heat during pouring or subsequent processing.
Iron 1.0–5.0
Manganese 0.1–1.5
9.2.2 Product (check) analysis shall be wholly the respon-
Molybdenum 4.0–6.0
sibility of the purchaser.
Nitrogen 0.03–0.12
9.3 Sampling for Mechanical Testing—A representative
Nickel 7.0–11.0
Phosphorous 0.030 max
sample shall be taken from each lot of finished material.
Sulfur 0.020 max
Silicon 0.05–1.00
10. Number of Tests and Retests
Tungsten 1.0–3.0
A
Cobalt Remainder
10.1 Chemical Analysis—One test per heat.
A
See 12.1.1.
10.2 Tension Tests— One test per lot.
10.3 Retests—If the specimen used in the mechanical test of
TABLE 3 Me
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