ASTM B639-02(2013)
(Specification)Standard Specification for Precipitation Hardening Cobalt-Containing Alloys (UNS R30155 and UNS R30816) Rod, Bar, Forgings, and Forging Stock for High-Temperature Service
Standard Specification for Precipitation Hardening Cobalt-Containing Alloys (UNS R30155 and UNS R30816) Rod, Bar, Forgings, and Forging Stock for High-Temperature Service
ABSTRACT
This specification covers hot- and cold-worked precipitation hardenable cobalt-containing alloys (UNS R30155 and UNS R30816) rod, bar, forgings, and forging stock for high temperature service. The material shall conform to the required chemical composition for carbon, manganese, silicon, phosphorus, sulfur, chromium, nickel, molybdenum, columbium, tantalum, iron, cobalt, and nitrogen. The materials shall conform to the required tensile and hardness properties such namely tensile strength, yield strength, alongation and Brinell hardness. The alloys shall also conform to the required stress-rupture properties. Dimensions such as diameter, thickness, or width, out-of-round, corners, cut lengths, straightness for cold-worked and hot-worked rod and bar shall be measured.
SCOPE
1.1 This specification covers hot- and cold-worked precipitation hardenable cobalt-containing alloys (UNS R30155 and UNS R30816) rod, bar, forgings, and forging stock for high-temperature service.
1.2 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.
1.3 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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Designation:B639 −02(Reapproved 2013)
Standard Specification for
Precipitation Hardening Cobalt-Containing Alloys (UNS
R30155 and UNSR30816) Rod, Bar, Forgings, and Forging
1
Stock for High-Temperature Service
This standard is issued under the fixed designation B639; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope Cobalt, and High-Temperature Alloys
1.1 This specification covers hot- and cold-worked precipi-
3. Terminology
tation hardenable cobalt-containing alloys (UNS R30155 and
UNS R30816) rod, bar, forgings, and forging stock for high- 3.1 Definitions of Terms Specific to This Standard:
3.1.1 bar, n—material of rectangular (flats), hexagonal,
temperature service.
octagonal, or square solid section in straight lengths.
1.2 The values stated in inch-pound units are to be regarded
3.1.2 rod, n—material of round solid section furnished in
as standard. The values given in parentheses are mathematical
straight lengths.
conversions to SI units that are provided for information only
and are not considered standard.
4. Ordering Information
1.3 This standard does not purport to address all of the
4.1 It is the responsibility of the purchaser to specify all
safety concerns, if any, associated with its use. It is the
requirements that are necessary for material ordered under this
responsibility of the user of this standard to become familiar
specification. Examples of such requirements include, but are
with all hazards including those identified in the appropriate
not limited to, the following:
Material Safety Data Sheet (MSDS) for this product/material
4.1.1 Alloy Name or UNS Number (see Table 1).
as provided by the manufacturer, to establish appropriate
4.1.2 ASTM Designation, including year of issue.
safety and health practices, and determine the applicability of
4.1.3 Condition (temper) (Table 4).
regulatory limitations prior to use.
4.1.4 Section—Rod or bar (round, rectangle, square,
2. Referenced Documents
hexagon, octagon).
2
4.1.4.1 Forging (sketch or drawing).
2.1 ASTM Standards:
4.1.5 Dimensions, including length.
B880Specification for General Requirements for Chemical
4.1.6 Quantity (mass or number of pieces).
Check Analysis Limits for Nickel, Nickel Alloys and
4.1.7 Forging stock—Specify if material is stock for reforg-
Cobalt Alloys
ing.
E8Test Methods for Tension Testing of Metallic Materials
4.1.8 Finish.
E29Practice for Using Significant Digits in Test Data to
4.1.9 Certification—State if certification or a report of test
Determine Conformance with Specifications
results is required (Section 15).
E139Test Methods for Conducting Creep, Creep-Rupture,
4.1.10 Samples for Product (Check) Analysis—Whether
and Stress-Rupture Tests of Metallic Materials
samplesforproduct(check)analysisshouldbefurnished(9.2).
E1473Test Methods for Chemical Analysis of Nickel,
4.1.11 Purchaser Inspection—If the purchaser wishes to
witness the tests or inspection of material at the place of
1
This specification is under the jurisdiction of ASTM Committee B02 on manufacture,thepurchaseordermustsostateindicatingwhich
Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee
tests or inspections are to be witnessed (Section 13).
B02.07 on Refined Nickel and Cobalt and Their Alloys.
*New designation established in accordance with Practices E527 and SAE
5. Chemical Composition
J1086. Practice for Numbering Metals and Alloys (UNS).
Current edition approved Feb. 1, 2013. Published February 2013. Originally
5.1 The material shall conform to the chemical composition
approved in 1970. Last previous edition approved in 2008 as B639–02 (2008).
limits specified in Table 1.
DOI: 10.1520/B0639-02R13.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
5.2 If a product (check) analysis is performed by the
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
purchaser, the material shall conform to the product (check)
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. analysis variations per Specification B880.
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B639−02(2013)
TABLE 1 Chemical Requirements
Element Composition Limits, % Composition Limits, %
UNS R30155 (Formerly UNS R30816 (Formerly
Grade 661) Grade 671)
Carbon 0.08 to 0.16 0.32 to 0.42
Manganese 1.00 to 2.00 1.00 to 2.00
Silicon 1.00 max 1.00 max
Phosphorus 0.040 max 0.040 max
Sulfur 0.030 max 0.030 max
Chromium 20.00 to 22.50 19.00 to 21.00
Nickel
...
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