1、Designation:A 1014 02Standard Specification forPrecipitation-Hardening Bolting Material(UNS N07718)forHigh Temperature Service1This standard is issued under the fixed designation A 1014;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision
2、,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon(e)indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This specification covers a precipitation hardening bolt-ing material(UNS N07718)for high temperature servic
3、e.2.Referenced Documents2.1 ASTM Standards:A 370 Test Methods and Definitions for Mechanical Testingof Steel Products2A 962/A 962MSpecification for Common Requirementsfor Steel Fasteners or Fastener Materials,or Both,Intendedfor Use at Any Temperature from Cryogenic to the CreepRange3B 637 Specifica
4、tion for Precipitation-Hardening Nickel Al-loy Bars,Forgings,and Forging Stock for High-Temperature Service4B 880 Specification for General Requirements for ChemicalCheck Analysis Limits for Nickel,Nickel Alloys,andCobalt Alloys4E 112 Test Methods for Determining the Average GrainSize5E 292 Test Met
5、hods for Conducting Time-For-RuptureNotch Tension Tests of Materials52.2ANSI Standards:B1.1 Screw Threads63.Ordering Information3.1 OrderingIt shall be the responsibility of the purchaserto specify all requirements that are necessary for product underthis specification including any supplementary on
6、es and thoseincluded in the ordering information required by SpecificationA 962/A 962M.4.Common Requirements4.1 Common RequirementsProduct furnished to thisspecification shall conform to Specification A 962/A 962M,including any supplementary requirements indicated on thepurchase order.Failure to com
7、ply with Specification A 962/A 962M constitutes non-conformance with this specification.Ifthe requirements of this specification conflict with those ofSpecification A 962/A 962M,then the requirements of thisspecification shall prevail.5.Manufacture5.1 Melting ProcessAlloy shall be multiple melted us
8、ingconsumable electrode practice in the remelt cycle or shall beinduction melted under vacuum.If consumable electroderemelting is not performed in vacuum,electrodes produced byvacuum induction melting shall be used.5.2 Heat Treatment:5.2.1 Solution TreatmentMaterial shall be solution heattreated at
9、a temperature within the range of 1725 to 1850F(941 to 1010C),held at the selected temperature for a timecommensurate with cross-sectional thickness,and cooled at arate equivalent to an air cool or faster.5.2.1.1 Temperature VariationSolution treating tempera-tures shall be controlled in the range o
10、f 6 25F(6 14C).5.2.2 Precipitation Heat TreatmentMaterial shall beheated to a temperature of 1325F(718C),held at temperaturefor eight hours minimum,furnace cooled to 1150F(621C)at100F(56C)per hour,held at temperature for eight hours,andcooled to room temperature.Alternatively,material may befurnace
11、cooled to 1150F(621C)at any rate provided the timeat 1150F(621C)is adjusted so the total precipitation heattreatment time is 18 hours minimum.5.2.2.1 Temperature VariationPrecipitation treatmenttemperatures and cooling rates shall be controlled in the rangeof 6 15F(6 8C).5.3 StraighteningWhen straig
12、htening is necessary it shallbe done after solution treating and prior to aging.Straighteningafter aging is prohibited.5.4 ThreadsThreads shall be formed by rolling in onepass after oxides have been removed from the area to bethreaded.1This specification is under the jurisdiction of ASTM Committee A
13、01 on Steel,Stainless Steel and Related Alloys and is the direct responsibility of SubcommitteeA01.22 on Steel Forgings and Wrought Fittings for Piping Applications and BoltingMaterials for Piping and Special Purpose Applications.Current edition approved March 10,2002.Published June 2002.Originallyp
14、ublished as A 1014 00.Last previous edition A 1014 00.2Annual Book of ASTM Standards,Vol 01.03.3Annual Book of ASTM Standards,Vol 01.01.4Annual Book of ASTM Standards,Vol 02.04.5Annual Book of ASTM Standards,Vol 03.01.6Available form American National Standards Institute,11 W.42ndSt.,13thFloor,New Y
15、ork,NY 10036.1*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.5.5 Dimensions and Tolerances,Bolting MaterialFullyheat treated bolting material shall meet the dimensional re-
16、quirements of Specification B 637 for UNS N07718.6.Chemical Composition6.1 Remelt IngotsThe chemical analyses of each remeltedingot shall conform to the requirements for chemical compo-sition prescribed in Table 1.6.2 Product AnalysisIf a product(check)analysis isperformed by the purchaser,the material shall conform to theproduct(check)analysis variations prescribed in SpecificationB 880.7.Mechanical Properties7.1 Tensile and HardnessAll testing shall be performedafter aging.The test specimens s
