1、Designation: A1014/A1014M 15A1014/A1014M 16Standard Specification forPrecipitation-Hardening Bolting (UNS N07718) for HighTemperature Service1This standard is issued under the fixed designation A1014/A1014M; the number immediately following the designation indicates theyear of original adoption or,
2、in the case of revision, the year of last revision. A number in parentheses indicates the year of lastreapproval. A superscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification covers precipitation hardening bolting material (UNS N07718)
3、and bolting components for hightemperature service. See Specification A962/A962M for the definition of “bolting.”1.2 The following referenced general requirements are indispensable for application of this specification: SpecificationA962/A962M.1.3 Supplementary requirements are provided for use at t
4、he option of the purchaser. The supplementary requirements only applywhen specified individually in the purchase order or contract.1.4 This specification is expressed in both inch-pound and in SI units. However, unless the purchase order or contract specifiesthe applicable M designation (SI units),
5、the inch-pound units shall apply.1.5 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the SI unitsare shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be usedindependentl
6、y of the other. Combining values from the two systems may result in non-conformance with the standard.2. Referenced Documents2.1 ASTM Standards:2A370 Test Methods and Definitions for Mechanical Testing of Steel ProductsA962/A962M Specification for Common Requirements for Bolting Intended for Use atA
7、ny Temperature from Cryogenic to theCreep RangeB637 Specification for Precipitation-Hardening and Cold Worked NickelAlloy Bars, Forgings, and Forging Stock for Moderateor High Temperature ServiceB880 Specification for General Requirements for Chemical Check Analysis Limits for Nickel, Nickel Alloys
8、and Cobalt AlloysE112 Test Methods for Determining Average Grain SizeE292 Test Methods for Conducting Time-for-Rupture Notch Tension Tests of Materials2.2 ASME Standards:3B1.1 Screw Threads2.3 SAE Standards:4AS 7467 Bolts And Screws, Nickel Alloy, UNS N07718 Tensile Strength 185 KSI 1275 MPa Stress
9、Rupture RatedProcurement Specification3. Ordering Information3.1 OrderingIt shall be the responsibility of the purchaser to specify all requirements that are necessary for product under thisspecification including any supplementary ones and those included in the ordering information required by Spec
10、ificationA962/A962M.1 This specification is under the jurisdiction ofASTM Committee A01 on Steel, Stainless Steel and RelatedAlloysand is the direct responsibility of Subcommittee A01.22on Steel Forgings and Wrought Fittings for Piping Applications and Bolting Materials for Piping and Special Purpos
11、e Applications.Current edition approved Nov. 1, 2015May 1, 2016. Published November 2015May 2016. Originally approved in 2000. Last previous edition approved in 20102015 asA1014/A1014MA1014/A1014M 15.10. DOI: 10.1520/A1014_A1014M-15.10.1520/A1014_A1014M-16.2 For referencedASTM standards, visit theAS
12、TM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.3 Available from American Society of Mechanical Engineers (ASME), ASME International Headquarters, Two P
13、ark Ave., New York, NY 10016-5990, http:/www.asme.org.4 Available from Society of Automotive Engineers (SAE), 400 Commonwealth Dr., Warrendale, PA 15096-0001, http:/www.sae.org.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what ch
14、anges have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the off
15、icial document.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States14. Common Requirements4.1 Common RequirementsBolting material and bolting components furnished to this spe
16、cification shall conform toSpecification A962/A962M, including any supplementary requirements indicated on the purchase order. Failure to comply withSpecification A962/A962M constitutes non-conformance with this specification. If the requirements of this specification conflictwith those of Specifica
17、tion A962/A962M, then the requirements of this specification shall prevail.5. Manufacture5.1 Melting ProcessBolting material alloy shall be multiple-melted using consumable electrode practice in the remelt cycleor shall be induction melted under vacuum. If consumable electrode re-melting is not perf
18、ormed in vacuum, electrodes producedby vacuum induction melting shall be used.5.2 Heat Treatment:5.2.1 Solution TreatmentBolting material shall be solution heat treated at a temperature within the range of 1725 to 1850 F940 to 1010 C, held at the selected temperature for a time commensurate with cro
19、ss-sectional thickness, and cooled at a rateequivalent to an air cool or faster.5.2.1.1 Temperature VariationSolution treating temperatures shall be controlled in the range of 6 25 F 6 14 C.5.2.2 Precipitation Heat TreatmentBolting material shall be heated to 1325 F 720 C, held at temperature for ei
20、ght hoursminimum, furnace cooled to 1150 F 620 C at 100 F 55 C per hour, held at temperature for eight hours, and cooled to roomtemperature. Alternatively, bolting material may be furnace cooled to 1150 F 620 C at any rate provided the time at 1150 F620 C is adjusted so the total precipitation heat
21、treatment time is 18 hours minimum.5.2.2.1 Temperature VariationPrecipitation treatment temperatures and cooling rates shall be controlled in the range of 6 15F 6 8 C.5.3 StraighteningWhen straightening is necessary it shall be done after solution treating and prior to aging. Straightening afteragin
22、g is prohibited.5.4 ThreadsThreads shall be formed by rolling in one pass after oxides have been removed from the area to be threaded.5.5 Dimensions and Tolerances, BoltingFully heat treated bolting material shall meet the dimensional requirements ofSpecification B637 for UNS N07718.6. Chemical Comp
23、osition6.1 Remelt IngotsThe chemical analyses of each remelted ingot used for bolting material shall conform to the requirementsfor chemical composition prescribed in Table 1.6.2 Product AnalysisIf a product (check) analysis is performed by the purchaser, the bolting material shall conform to thepro
24、duct (check) analysis variations prescribed in Specification B880.7. Mechanical Properties7.1 Tensile and HardnessAll testing shall be performed after aging. The test specimens shall meet the requirements of Table2.TABLE 1 Chemical RequirementsElement UNS N07718(Formerly Grade 718)Carbon, max. 0.08M
25、anganese, max. 0.35Silicon, max. 0.35Phosphorus, max. 0.015Sulfur, max. 0.015Chromium 17.021.0Cobalt, max.A 1.0Molybdenum 2.803.30Columbium + 4.755.50Tantalum . . .Titanium 0.651.15Aluminum 0.200.80Boron, max. 0.006IronB RemainderCopper, max. 0.30NickelC 50.055.0A If determined.B Determined arithmet
26、ically by difference.C Nickel + Cobalt.A1014/A1014M 1627.2 Stress RuptureStress rupture testing shall be conducted in accordance with Table 2 using a combination test bar inaccordance with Test Methods E292. Rupture must occur in the smooth section of each test specimen.7.3 Headed Bolting Components
27、In addition to 7.1 and 7.2, headed bolting components such as bolts, studs, or screws witha body length three times the diameter of the component or longer shall be subjected to full size tensile test in accordance withAnnex A3 of Test Methods and Definitions and A370 and shall conform to the tensil
28、e strength shown in Table 2. The minimumfull size breaking strength (lbf) for individual sizes shall be as follows:Ts5UTS3As (1)where:Ts = tensile strength,UTS = tensile strength specified in Table 2, andAs = stress area, square inches square millimetres, as shown in ASME B1.1 or calculated as follo
29、ws:As50.785D 20.974/n! !2 (2)where:D = nominal thread size, andn = the number of threads per inch.As50.785D 20.9382P!2# (3)where:D = Nominal thread size, andP = Thread pitch, mm.8. Metallography8.1 MicrostructureThe microstructure of the bolting material shall be free of freckles, white spots, and L
30、aves phases. Threadsof bolting components may show evidence of cold working as a result of rolling. The average grain size shall be determined inaccordance with Test Methods E112 and found to be ASTM No. 5 or finer. Up to 20 % of the structure may have a grain size aslarge as a No. 3 due to the pres
31、ence of non-crystallized grains.8.2 MacrostructureBolting components produced from forgings shall exhibit continuous flow lines in the threads and in anyshank to head or fillet and/or bearing surface areas.9. Number of Tests9.1 ChemistryOne test per remelt ingot of bolting material.9.2 Mechanical Pr
32、opertiesThe number of tests shall be in accordance with Specification A962/A962M except that for stressrupture one test shall be run per lot. For headed bolting components with a body length less than three times the diameter of thecomponent, a separately forged test bar may be used for tensile and
33、stress rupture testing provided it is heat-treated with thecomponents. Separately forged bars shall be approximately the same diameter as the headed bolting component they represent.9.3 Grain SizeOne test per lot.9.4 Flow LinesOne test per lot on forged bolting components after final machining.9.5 H
34、eaded Bolting ComponentsOne tensile test per lot.TABLE 2 Mechanical PropertiesTensile and HardnessTensile strength, min, ksi Mpa 185 1275Yield Strength, min, ksi, Mpa 0.2 % offset 150 1035Elongation in 2 in., or 50 mm (or 4D) min % 12Reduction of area, min, % 15Hardness, Brinell 331444Stress Rupture
35、 RequirementsTemperature, F C 1200 650Stress, ksi Mpa 100 690Hours, min 23Elongation in 2 in., or 50 mm (or 4D), min % 5Elevated Tensile RequirementsTemperature, F C 1200 650Tensile strength, min, ksi Mpa 145 1000Yield Strength, min, ksi, Mpa 0.2 % offset 125 860Elongation in 2 in., or 50 mm (or 4D)
36、 min % 12Reduction of area, min, % 15A1014/A1014M 16310. Bolting Quality, Condition, and Finish10.1 Bolting MaterialShall be uniform in quality and condition, smooth, commercially straight or flat, and free of injuriousimperfections.10.2 Bolting ComponentsMultiple laps on thread flanks are prohibite
37、d. Seams, laps, notches, slivers, or oxide scale in the rootarea of threads are prohibited. Cracks are prohibited.11. Product Marking11.1 MarkingBolting components shall be marked with “718” and the manufacturers identification symbol.12. Certification12.1 ReportIn addition to the requirements of A9
38、62/A962M, certification shall include the solution treatment cycle time andtemperature and the aging cycle time(s) and temperature(s).13. Keywords13.1 bolting; bolting materials; bolting components; Inconel 718; nickel alloy; precipitation hardening; temperature serviceapplication highSUPPLEMENTARY
39、REQUIREMENTSThese requirements do not apply unless specified in the purchase order and in the OrderingInformation, in which event the specified tests shall be made before shipment of the product.S1. Protective AtmosphereS1.1 Heat treatment shall be performed under suitable protective atmosphere.S2.
40、CleaningS2.1 Bolting components shall be cleaned with nitric acid as stated in AS 7467S3. Fillet RollingS3.1 The fillet area of the head of bolts, screws, or studs shall be rolled.S4. Forged HeadsS4.1 Heads for bolts, screws, or studs shall be forged.S5. MarkingS5.1 Marking on bolting components sha
41、ll include heat lot identification.S5. Thread RollingS5.1 Thread rolling shall be performed before precipitation heat treatment.A1014/A1014M 164SUMMARY OF CHANGESCommittee A01 has identified the location of selected changes to this specification since the last issue,A1014/A1014M15, that may impact t
42、he use of this specification. (Approved May 1, 2016)(1) Removed reference to A370.SUMMARY OF CHANGESCommittee A01 has identified the location of selected changes to this specification since the last issue,A1014/A1014M10, that may impact the use of this specification. (Approved November 1, 2015)(1) R
43、emoved the word “fasteners” and replaced it with “bolting components” in accordance with the definition of bolting inSpecification A962/A962M in 7.3, 8.2, 9.2, 9.4, 9.5, 10.2, 11.1, 13, S3.1, and S5.1.(2) Expanded the words “material” or “bolting” to be specific as to context whether they are boltin
44、g materials or components in1.1, 4.1, 5.1, 5.2.1, 5.2.2, 5.5, 6.1, 6.2, 8.1, 9.1, and 10.1.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination
45、 of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdraw
46、n.Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your com
47、ments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or
48、 multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 165
