Standard Specification for Precipitation-Hardening Bolting Material (UNS N07718) for High Temperature Service

SCOPE
1.1 This specification covers a precipitation hardening bolting material (UNS N07718) for high temperature service.

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30-Sep-2003
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ASTM A1014-03 - Standard Specification for Precipitation-Hardening Bolting Material (UNS N07718) 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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: A 1014 – 03
Standard Specification for
Precipitation-Hardening Bolting Material (UNS N07718) for
1
High Temperature Service
This standard is issued under the fixed designation A 1014; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope* 3. Ordering Information
1.1 This specification covers a precipitation hardening bolt- 3.1 Ordering—It shall be the responsibility of the purchaser
ing material (UNS N07718) for high temperature service. to specify all requirements that are necessary for product under
this specification including any supplementary ones and those
2. Referenced Documents
included in the ordering information required by Specification
2
2.1 ASTM Standards: A 962/A 962M.
A 370 Test Methods and Definitions for MechanicalTesting
4. Common Requirements
of Steel Products
A 962/A 962M Specification for Common Requirements 4.1 Common Requirements—Product furnished to this
forSteelFastenersorFastenerMaterials,orBoth,Intended specification shall conform to Specification A 962/A 962M,
for Use at Any Temperature from Cryogenic to the Creep including any supplementary requirements indicated on the
Range purchase order. Failure to comply with Specification A 962/
B 637 Specification for Precipitation-Hardening Nickel Al- A 962Mconstitutesnon-conformancewiththisspecification.If
loy Bars, Forgings, and Forging Stock for High- the requirements of this specification conflict with those of
Temperature Service Specification A 962/A 962M, then the requirements of this
B 880 SpecificationforGeneralRequirementsforChemical specification shall prevail.
Check Analysis Limits for Nickel, Nickel Alloys, and
5. Manufacture
Cobalt Alloys
E 112 Test Methods for Determining the Average Grain 5.1 Melting Process—Alloy shall be multiple melted using
Size consumable electrode practice in the remelt cycle or shall be
induction melted under vacuum. If consumable electrode
E 292 Test Methods for Conducting Time-For-Rupture
Notch Tension Tests of Materials remelting is not performed in vacuum, electrodes produced by
vacuum induction melting shall be used.
2.2 ANSI Standards:
3
B1.1 Screw Threads 5.2 Heat Treatment:
5.2.1 Solution Treatment—Material shall be solution heat
2.3 SAE Standards:
AS 7467 Bolts And Screws, Nickel Alloy, UNS N07718 treated at a temperature within the range of 1725 to 1850°F
(941 to 1010°C), held at the selected temperature for a time
Tensile Strength 185 KSI Stress Rupture Rated Procure-
4
ment Specification commensurate with cross-sectional thickness, and cooled at a
rate equivalent to an air cool or faster.
5.2.1.1 Temperature Variation—Solution treating tempera-
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
tures shall be controlled in the range of 6 25°F (6 14°C).
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
5.2.2 Precipitation Heat Treatment—Material shall be
A01.22 on Steel Forgings andWrought Fittings for PipingApplications and Bolting
heatedtoatemperatureof1325°F(718°C),heldattemperature
Materials for Piping and Special Purpose Applications.
Current edition approved Oct. 1, 2003. Published November 2003. Originally
for eight hours minimum, furnace cooled to 1150°F (621°C) at
approved in 2000. Last previous edition approved in 2002 as A 1014 – 02.
100°F(56°C)perhour,heldattemperatureforeighthours,and
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
cooled to room temperature. Alternatively, material may be
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 furnacecooledto1150°F(621°C)atanyrateprovidedthetime
the ASTM website.
at 1150°F (621°C) is adjusted so the total precipitation heat
3 nd th
Available form American National Standards Institute, 11 W. 42 St., 13
treatment time is 18 hours minimum.
Floor, New York, NY 10036.
4
Available from Society of Automotive Engineers (SAE), 400 Commonwealth
Dr., Warrendale, PA 15096-0001.
*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.
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A1014–03
TABLE 2 Mechanical Properties
5.2.2.1 Temperature Variation—Precipitation treatment
temperatures and cooling rates shall be controlled in the range Tensile and Hardness
of 6 15°F (6 8°C).
Tensile strength, min, ksi (Mpa) 185 (1275)
Yield Strength, min, ksi, (Mpa) 0.2 % offset 150 (1035)
5.3 Straightening—When straightening i
...

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