ASTM B637-2018 Standard Specification for Precipitation-Hardening and Cold Worked Nickel Alloy Bars Forgings and Forging Stock for Moderate or High Temperature .pdf

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1、Designation: B637 18Standard Specification forPrecipitation-Hardening and Cold Worked Nickel Alloy Bars,Forgings, and Forging Stock for Moderate or HighTemperature Service1This standard is issued under the fixed designation B637; the number immediately following the designation indicates the year of

2、original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S. Departm

3、ent of Defense.1. Scope*1.1 This specification2covers hot- and cold-workedprecipitation-hardenable nickel alloy rod, bar, forgings, andforging stock for moderate or high temperature service (Table1).1.2 The values stated in inch-pound units are to be regardedas standard. The values given in parenthe

4、ses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to become familiarwith all

5、hazards including those identified in the appropriateSafety Data Sheet (SDS) for this product/material as providedby the manufacturer, to establish appropriate safety, health,and environmental practices, and determine the applicabilityof regulatory limitations prior to use.1.4 This international sta

6、ndard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2.

7、Referenced Documents2.1 ASTM Standards:3B880 Specification for General Requirements for ChemicalCheck Analysis Limits for Nickel, Nickel Alloys andCobalt AlloysE8/E8M Test Methods for Tension Testing of Metallic Ma-terialsE29 Practice for Using Significant Digits in Test Data toDetermine Conformance

8、 with SpecificationsE139 Test Methods for Conducting Creep, Creep-Rupture,and Stress-Rupture Tests of Metallic MaterialsE140 Hardness Conversion Tables for Metals RelationshipAmong Brinell Hardness, Vickers Hardness, RockwellHardness, Superficial Hardness, Knoop Hardness, Sclero-scope Hardness, and

9、Leeb HardnessE1473 Test Methods for Chemical Analysis of Nickel, Co-balt and High-Temperature Alloys3. Terminology3.1 Definitions:3.1.1 bar, nmaterial of rectangular (flats), hexagonal,octagonal, or square solid section in straight lengths.3.1.2 rod, nmaterial of round solid section furnished instra

10、ight lengths.4. Ordering Information4.1 It is the responsibility of the purchaser to specify allrequirements that are necessary for material ordered under thisspecification. Examples of such requirements include, but arenot limited to, the following:4.1.1 Alloy (Table 1).4.1.2 Condition (temper or c

11、old worked) (Tables 2 and 3and 6.1).4.1.3 ShapeRod or bar (round, rectangle, square,hexagon, octagon).4.1.3.1 Forging (sketch or drawing).4.1.4 Dimensions, including length.4.1.5 Quantity (mass or number of pieces).4.1.6 Forging StockSpecify if material is stock for reforg-ing.4.1.7 Finish.4.1.8 Cer

12、tificationState if certification is required (Sec-tion 15).1This specification is under the jurisdiction of ASTM Committee B02 onNonferrous Metals and Alloys and is the direct responsibility of SubcommitteeB02.07 on Refined Nickel and Cobalt and Their Alloys.Current edition approved Nov. 1, 2018. Pu

13、blished December 2018. Originallyapproved in 1970. Last previous edition addition approved in 2016 as B637 16.DOI: 10.1520/B0637-18.2For ASME Boiler and Pressure Vessel Code applications, see related Specifi-cation SB-637 in Section II of that Code.3For referenced ASTM standards, visit the ASTM webs

14、ite, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor D

15、rive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recommendations

16、issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.14.1.9 Samples for Product (Check) AnalysisWhethersamples for product (check) analysis shall be furnished (9.2).4.1.10 Purchaser InspectionIf the purchaser wishes towitness tests or inspection of material at the place

17、 ofmanufacture, the purchase order must so state indicating whichtests or inspections are to be witnessed (Section 13).5. Chemical Composition5.1 The material shall conform to the requirements as tochemical composition prescribed in Table 1.5.2 If a product (check) analysis is performed by thepurcha

18、ser, the material shall conform to the product (check)analysis variations prescribed in Specification B880.6. Mechanical Properties6.1 Unless otherwise specified, the material shall be sup-plied in the cold worked or solution treated condition, suitablefor subsequent age hardening.6.2 The cold worke

19、d or solution treated material shall becapable of meeting the mechanical property requirements ofTable 3, and the stress rupture requirements of Table 4 (exceptalloys UNS N07022, N09925 and N07725), following theprecipitation hardening treatment described in Table 2.6.3 When the material is to be su

20、pplied in the cold workedor solution treated plus aged condition, the requirements ofTable 3 and Table 4 (except alloys UNS N07022, N09925 andN07725) shall apply, with the precipitation hardening treat-ment of Table 2, or as agreed upon between the purchaser andthe manufacturer as part of the purcha

21、se contract.7. Dimensions and Permissible Variations7.1 Diameter, Thickness, or WidthThe permissible varia-tions from the specified dimensions of cold-worked rod and barshall be as prescribed in Table 5, and of hot-worked rod and baras prescribed in Table 6.TABLE 1 Chemical RequirementsElement Compo

22、sition Limits, %UNSN07022UNSN07208UNSN07252(FormerlyGrade 689)UNSN07001(FormerlyGrade 685)UNSN07500(FormerlyGrade 684)UNSN07740UNSN07750(FormerlyGrade 688)UNSN07718(FormerlyGrade 718)Carbon 0.010 max 0.040.08 0.100.20 0.030.10 0.15 max 0.0050.08 0.08 max 0.08 maxManganese 0.5 max 0.3 max 0.50 max 1.

23、00 max 0.75 max 1.00 max 1.00 max 0.35 maxSilicon 0.08 max 0.15 max 0.50 max 0.75 max 0.75 max 1.00 max 0.50 max 0.35 maxPhosphorus 0.025 max 0.015 max 0.015 max 0.030 max 0.015 max 0.030 max . 0.015 maxSulfur 0.015 max 0.015 max 0.015 max 0.030 max 0.015 max 0.030 max 0.01 max 0.015 maxChromium 20.

24、021.4 18.520.5 18.0020.00 18.0021.00 15.0020.00 23.5025.50 14.0017.00 17.021.0Cobalt 1.0 max 9.011.0 9.0011.00 12.0015.00 13.0020.00 15.0022.00 1.00 maxA1.0 maxAMolybdenum 15.517.4 8.09.0 9.0010.50 3.505.00 3.005.00 2.00 max . 2.803.30Columbium(Nb) + tantalum. . . . . . 0.701.20 4.755.50Titanium . 1

25、.902.30 2.252.75 2.753.25 2.503.25 0.502.50 2.252.75 0.651.15Aluminum 0.5 max 1.381.65 0.751.25 1.201.60 2.503.25 0.202.00 0.401.00 0.200.80Zirconium . 0.020 max . 0.020.12 . . . .Boron 0.006 max 0.0030.010 0.0030.01 0.0030.01 0.0030.01 0.00080.006 . 0.006 maxIron 1.8 max 1.5 max 5.00 max 2.00 max 4

26、.00 max 3.00 max 5.009.00 remainderBCopper 0.5 max 0.1 max . 0.50 max 0.15 max 0.50 max 0.50 max 0.30 maxNickel remainderBremainderBremainderBremainderBremainderBremainderB70.00 min 50.055.0Tantalum 0.2 max 0.1 max . . . . . .Columbium(Niobium).0.2 max. . . 0.502.50 . .Tungsten 0.8 max 0.5 max . . .

27、 . . .UNS N07080(FormerlyGrade 80A)UNS N07752 UNS N09925 UNS N07725Carbon 0.10 max 0.0200.060 0.03 max 0.03 maxManganese 1.00 max 1.00 max 1.0 max 0.35 maxSilicon 1.00 max 0.50 max 0.5 max 0.20 maxPhosphorus . 0.008 max 0.03 max 0.015 maxSulfur 0.015 max 0.003 max 0.03 max 0.010 maxChromium 18.0021.

28、00 14.5017.00 19.522.5 19.0022.50Cobalt . 0.050 max . .Molybdenum . . 2.53.5 7.009.50Columbium(Nb) + tantalum. 0.701.20 0.5 max (Nb only) 2.754.00Titanium 1.802.70 2.252.75 1.92.40 1.001.70Aluminum 0.501.80 0.401.00 0.10.5 0.35 maxBoron . 0.007 max . .Iron 3.00 max 5.009.00 22.0 min remainderBCopper

29、 . 0.50 max 1.53.0 .Zirconium . 0.050 max . .Vanadium . 0.10 max . .Nickel remainderB70.0 min 42.046.0 55.059.0AIf determined.BThe element shall be determined arithmetically by difference.B637 182TABLE 2 Heat TreatmentAAlloyRecommendedAnnealing TreatmentRecommended SolutionTreatmentRecommended Stabi

30、lizingTreatmentPrecipitation HardeningTreatmentN07022BType 1A or 1B . 1800 to 2100F (982 to1149C), hold12 h/in.,5 minutes minimum,rapid air cool orwater quench.N07022CType 2 . 1800 to 2100F (982 to1149C),hold12 h/in.,5 minutes minimum,rapid air cool orwater quench. 1125 25F (605 14C),hold 10 h, air

31、coolBN07022 Type 3 . 1800 to 2100F (982 to1149C), hold12 h/in.,5 minutes minimum,rapid air cool orwater quench. 1300 25F (705 14C),hold 16 h, furnace cool to1125 25F (605 14C),hold 32 h, air coolN07208 . 2000 to 2125F (1093 to1163C), hold12 h/in.,5 to 10 minutes minimum,water quench orrapid air cool

32、. 1850 25F (1010 14C),hold 2 h, air cool, followed by1450 25F (788 14C),hold 8 h, air coolN07252 . 1950 25F (1066 14C), hold 4 h, air cool. 1400 25F (760 14C),hold 15 h, air cool or furnacecoolN07001 . 1825 to 1900F (996 to1038C), hold 4 h, oil orwater quench1550 25F (843 14C),hold 4 h, air cool1400

33、 25F (760 14C),hold 16 h, air cool or furnacecoolN07500 2150 25F (1177 14C), hold 2 h, air cool(bars only)1975 25F (1080 14C), hold 4 h, air cool1550 25F (843 14C),hold 24 h, air cool1400 25F (760 14C),hold 16 h, air cool or furnacecoolN07740 . 2010F (1100C)minimum, hold1hperin.of thickness with12 h

34、minimim hold, waterquench or rapid air cool. 1400 to 1500F (760 to815C), hold4hminimumforup to 2 in. thickness +additional12 h per eachadditional in. of thickness, aircoolN07750 Type 1(Service above1100F) (593C). 2100 25F (1149 14C), hold 2 to 4 h, aircool1550 25F (843 14C),hold 24 h, air cool1300 2

35、5F (704 14C),hold 20 h, air cool or furnacecoolN07750 Type 2(Service up to1100F) (593C). 1800 25F (982 14C), hold12 h min, coolat rate equivalent to aircool or faster. 1350 25F (732 14C),hold 8 h, furnace cool to1150 25F (62 1 14C),hold until total precipitationheat treatment has reached18 h, air co

36、olN07750 Type 3 . 1975 2050F (1079 1121C), hold 1 to 2 h, aircool. 1300 25F (704 14C),hold20h,+40h,aircoolN07752 Type 1 . 1975 25F (1080 14C), hold 1 to 2 h, coolby water or oil quenching. 1320 25F (715 14C),hold 20 h, +2, 0 h, air coolN07752 Type 2 . 1975 25F (1080 14C), hold 1 to 2 h, coolby water

37、 or oil quenching. 1400 25F (760 14C),hold 100 h, +4, 0 h, air coolN07718 . 1700 to 1850F (924 to1010C), hold12 h min,cool at rate equivalent toair cool or faster. 1325 25F (718 14C),hold at temperature for 8 h,furnace cool to 1150 25F (621 14C), hold untiltotal precipitation heattreatment time has

38、reached18 h, air coolB637 1837.1.1 Out of RoundCold-worked and hot-worked rod, allsizes, in straight lengths, shall not be out-of-round by morethan one half the total permissible variations in diameter shownin Table 5 and Table 6, except for hot-worked rod12 in. (12.7mm) and under, which may be out-

39、of-round by the totalpermissible variations in diameter shown in Table 6.7.1.2 CornersCold-worked bar shall have practically ex-act angles and sharp corners.7.1.3 Cut LengthsA specified length to which all rod andbar will be cut with a permissible variation of +18 in. (3.18mm), 0 for sizes 8 in. (20

40、3 mm) and less in diameter or thedistance between parallel surfaces. For larger sizes, the per-missible variation shall be +14 in. (6.35 mm), 0.7.1.4 Straightness for Cold-Worked and Hot-Worked Rodand BarThe maximum curvature (depth of chord) shall notexceed 0.050 in. multiplied by the length in fee

41、t (0.04 mmmultiplied by the length in centimetres). Material under12 in.(12.7 mm) in diameter or the distance between parallel surfacesshall be reasonably straight and free of sharp bends and kinks.7.1.5 For forgings, dimensions and tolerances shall be asspecified on the order, sketch, or drawing.7.

42、1.6 Dimensions and tolerances for forging stock shall beas agreed upon between the purchaser and the manufacturer.8. Workmanship, Finish, and Appearance8.1 The material shall be uniform in quality and condition,smooth, commercially straight or flat, and free of injuriousimperfections.9. Sampling9.1

43、LotDefinition:9.1.1 A lot for chemical analysis shall consist of one heat.9.1.2 Mechanical PropertiesA lot for tension, hardness,and stress-rupture testing shall consist of all material from thesame heat, nominal diameter or thickness, or forging size, andcondition (temper).9.1.2.1 For forging stock

44、, a lot shall consist of one heat.9.1.2.2 Where material cannot be identified by heat, a lotshall consist of not more than 500 lb (227 kg) of material in thesame size and condition (temper).9.2 Test Material Selection:9.2.1 Chemical AnalysisRepresentative samples shall betaken during pouring or subs

45、equent processing.9.2.1.1 Product (Check) Analysis shall be wholly the re-sponsibility of the purchaser.9.2.2 Mechanical PropertiesSamples of the material toprovide test specimens for mechanical properties shall be takenfrom such locations in each lot as to be representative of thatlot.10. Number of

46、 Tests10.1 Chemical AnalysisOne test per lot.10.2 TensionOne test per lot.10.3 HardnessOne test per lot.10.4 Stress-RuptureOne test per lot.11. Specimen Preparation11.1 Rod and Bar:11.1.1 Tension test specimens shall be taken from materialin the final condition (temper) and tested in the direction o

47、ffabrication.11.1.2 All rod and bar shall be tested in full cross-sectionsize when possible. When a full cross-section size test cannotbe performed, the largest possible round specimen shown inTest Methods E8/E8M shall be used. Longitudinal strip speci-mens shall be prepared in accordance with Test

48、MethodsE8/E8M for rectangular bar up to12 in. (12.7 mm), inclusive,in thickness, which are too wide to be pulled full size.11.1.3 Forging stock test specimens shall be taken from aforged-down coupon or a sample taken directly from stock.11.2 Forgings:TABLE 2 ContinuedAlloyRecommendedAnnealing TreatmentRecommended SolutionTreatmentRecommended StabilizingTreatmentPrecipitation HardeningTreatmentN07080 . 1950 25F (1066 14C), hold 8 h, air cool1560 25F (849 14C),hold 24 h, air cool1290 25F (699 14C),hold 16 h, air coolN07725 . 1900 25F (1038 14C), hold12 min, and 4h max, cool at ratee