Standard Specification for Precipitation-Hardening Nickel Alloy Bars, Forgings, and Forging Stock for High-Temperature Service

ABSTRACT
This specification covers hot- and cold-worked precipitation-hardenable nickel alloy rod, bar, forgings, and forging stock for high-temperature service. Chemical analysis shall be performed on the alloy and shall conform to the chemical composition requirement in carbon, manganese, silicon, phosphorus, sulfur, chromium, cobalt, molybdenum, columbium, tantalum, titanium, aluminum, zirconium, boron, iron, copper, and nickel. The material shall follow recommended annealing treatment, solution treatment, stabilizing treatment, and precipitation hardening treatment. Tension testing, hardness testing and stress-rupture testing shall be performed on the material and shall comply to the required tensile strength, yield strength, elongation, reduction in area, and Brinell hardness.
SCOPE
1.1 This specification covers hot- and cold-worked precipitation-hardenable nickel alloy rod, bar, forgings, and forging stock for high-temperature service (Table 1).
1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in brackets 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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30-Nov-2006
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ASTM B637-06 - Standard Specification for Precipitation-Hardening Nickel Alloy Bars, Forgings, and Forging Stock for High-Temperature Service
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: B 637 – 06
Standard Specification for
Precipitation-Hardening Nickel Alloy Bars, Forgings, and
1
Forging Stock for High-Temperature Service
This standard is issued under the fixed designation B637; 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 (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope E1473 Test Methods for Chemical Analysis of Nickel,
2 Cobalt, and High-Temperature Alloys
1.1 This specification covers hot- and cold-worked
precipitation-hardenable nickel alloy rod, bar, forgings, and
3. Terminology
forging stock for high-temperature service (Table 1).
3.1 Definitions:
1.2 The values stated in inch-pound units are to be regarded
3.1.1 bar, n—material of rectangular (flats), hexagonal,
as the standard. The values given in brackets are for informa-
octagonal, or square solid section in straight lengths.
tion only.
3.1.2 rod, n—material of round solid section furnished in
1.3 This standard does not purport to address all of the
straight lengths.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to become familiar
4. Ordering Information
with all hazards including those identified in the appropriate
4.1 It is the responsibility of the purchaser to specify all
Material Safety Data Sheet (MSDS) for this product/material
requirements that are necessary for material ordered under this
as provided by the manufacturer, to establish appropriate
specification. Examples of such requirements include, but are
safety and health practices, and determine the applicability of
not limited to, the following:
regulatory limitations prior to use.
4.1.1 Alloy (Table 1).
2. Referenced Documents 4.1.2 Condition (temper) (Table 2).
3 4.1.3 Shape—Rod or bar (round, rectangle, square, hexa-
2.1 ASTM Standards:
gon, octagon).
B880 SpecificationforGeneralRequirementsforChemical
4.1.3.1 Forging (sketch or drawing).
Check Analysis Limits for Nickel, Nickel Alloys and
4.1.4 Dimensions, including length.
Cobalt Alloys
4.1.5 Quantity (mass or number of pieces).
E8 Test Methods for Tension Testing of Metallic Materials
4.1.6 Forging Stock—Specifyifmaterialisstockforreforg-
E29 Practice for Using Significant Digits in Test Data to
ing.
Determine Conformance with Specifications
4.1.7 Finish.
E139 Test Methods for Conducting Creep, Creep-Rupture,
4.1.8 Certification—State if certification is required (Sec-
and Stress-Rupture Tests of Metallic Materials
tion 15).
4.1.9 Samples for Product (Check) Analysis—Whether
1
samples for product (check) analysis shall be furnished (9.2).
This specification is under the jurisdiction of ASTM Committee B02 on
Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee
4.1.10 Purchaser Inspection—If the purchaser wishes to
B02.07 on Refined Nickel and Cobalt and Their Alloys.
witness tests or inspection of material at the place of manu-
Current edition approved Dec. 1, 2006. Published January 2007. Originally
facture, the purchase order must so state indicating which tests
approved in 1970. Last previous edition addition approved in 2003 as B637–03.
2
or inspections are to be witnessed (Section 13).
For ASME Boiler and Pressure Vessel Code applications, see related Specifi-
cation SB-637 in Section II of that Code.
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
5. Chemical Composition
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
5.1 The material shall conform to the requirements as to
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. chemical composition prescribed in Table 1.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

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B637–06
TABLE 1 Chemical Requirements
Element Composition Limits, %
UNS N07252 UNS N07001 UNS N07500 UNS N07750 UNS N07718
(Formerly (Formerly (Formerly (Formerly (Formerly
Grade 689) Grade 685) Grade 684) Grade 688) Grade 718)
Carbon 0.10–0.20 0.03–0.10 0.15 max 0.08 max 0.08 max
Manganese 0.50 max 1.00 max 0.75 max 1.00 max 0.35 max
Silicon 0.50 max 0.75 max 0.75 max 0.50 max 0.35 max
Phosphorus 0.015 max 0.030 max 0.015 max . 0.015 max
Sulfur 0.015 max 0.030 max 0.015 max 0.01 max 0.015 max
Chromium 18.00–20.00 18.00–21.00 15.00–20.00 14.00–17.00 17.0–21.0
A A
Cobalt 9.00–11.00 12.00–15.00 13.00–20.00 1.00 max 1.0 max
Molybdenum 9.00–10.50 3.50–5.00 3.00–5.00 . 2.80–3.30
Columbium . . . 0.70–1.20 4.75–5.50
(Nb) + tantalum
Tita
...

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