1、Designation: B 637 061Standard Specification forPrecipitation-Hardening Nickel Alloy Bars, Forgings, andForging Stock for High-Temperature Service1This standard is issued under the fixed designation B 637; the number immediately following the designation indicates the year oforiginal adoption or, in
2、 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 Department of Defense.1NOTETable 1 w
3、as corrected editorially in July 2008.1. Scope1.1 This specification2covers hot- and cold-workedprecipitation-hardenable nickel alloy rod, bar, forgings, andforging stock for high-temperature service (Table 1).1.2 The values stated in inch-pound units are to be regardedas the standard. The values gi
4、ven in brackets are for informa-tion only.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 hazards including those identified in the appropriateMaterial Safety Dat
5、a Sheet (MSDS) for this product/materialas provided by the manufacturer, to establish appropriatesafety and health practices, and determine the applicability ofregulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:3B 880 Specification for General Requirements for ChemicalChec
6、k Analysis Limits for Nickel, Nickel Alloys andCobalt AlloysE8 Test Methods for Tension Testing of Metallic MaterialsE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE 139 Test Methods for Conducting Creep, Creep-Rupture,and Stress-Rupture Tests of Me
7、tallic MaterialsE 1473 Test Methods for Chemical Analysis of Nickel,Cobalt, 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 ins
8、traight 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)
9、(Table 2).4.1.3 ShapeRod or bar (round, rectangle, square, hexa-gon, 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 CertificationState if certi
10、fication is required (Sec-tion 15).4.1.9 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 of manu-facture, the purchase order must so stat
11、e indicating which testsor inspections are to be witnessed (Section 13).5. Chemical Composition5.1 The material shall conform to the requirements as tochemical composition prescribed in Table 1.1This specification is under the jurisdiction of ASTM Committee B02 onNonferrous Metals and Alloys and is
12、the direct responsibility of SubcommitteeB02.07 on Refined Nickel and Cobalt and Their Alloys.Current edition approved Dec. 1, 2006. Published January 2007. Originallyapproved in 1970. Last previous edition addition approved in 2003 as B 637 03.2For ASME Boiler and Pressure Vessel Code applications,
13、 see related Specifi-cation SB-637 in Section II of that Code.3For referenced ASTM standards, visit the ASTM website, 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
14、.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.5.2 If a product (check) analysis is performed by thepurchaser, the material shall conform to the product (check)analysis variations prescribed in Specification B 880.6. Mechanical Pro
15、perties6.1 Unless otherwise specified, the material shall be sup-plied in the solution treated condition, suitable for subsequentage hardening.6.2 The solution treated material shall be capable of meetingthe mechanical property requirements of Table 3, and the stressrupture requirements of Table 4 (
16、except alloys UNS N09925and N07725), following the precipitation hardening treatmentdescribed in Table 2.6.3 When the material is to be supplied in the solutiontreated plus aged condition, the requirements of Table 3 andTable 4 (except alloys UNS N09925 and N07725) shall apply,with the precipitation
17、 hardening treatment of Table 2,orasagreed upon between the purchaser and the manufacturer aspart of the purchase 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 prescrib
18、ed in Table 5, and of hot-worked rod and baras prescribed in Table 6.7.1.1 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 i
19、n. 12.7mm and under, which may be out-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 +
20、18 in. 3.18mm, 0 for sizes 8 in. 203 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.TABLE 1 Chemical RequirementsElement Composition Limits, %UNS N07252(FormerlyGrade 689)UNS N07001(FormerlyGrade 685)UNS N075
21、00(FormerlyGrade 684)UNS N07750(FormerlyGrade 688)UNS N07718(FormerlyGrade 718)Carbon 0.100.20 0.030.10 0.15 max 0.08 max 0.08 maxManganese 0.50 max 1.00 max 0.75 max 1.00 max 0.35 maxSilicon 0.50 max 0.75 max 0.75 max 0.50 max 0.35 maxPhosphorus 0.015 max 0.030 max 0.015 max . 0.015 maxSulfur 0.015
22、 max 0.030 max 0.015 max 0.01 max 0.015 maxChromium 18.0020.00 18.0021.00 15.0020.00 14.0017.00 17.021.0Cobalt 9.0011.00 12.0015.00 13.0020.00 1.00 maxA1.0 maxAMolybdenum 9.0010.50 3.505.00 3.005.00 . 2.803.30Columbium(Nb) + tantalum. . . 0.701.20 4.755.50Titanium 2.252.75 2.753.25 2.503.25 2.252.75
23、 0.651.15Aluminum 0.751.25 1.201.60 2.503.25 0.401.00 0.200.80Zirconium . 0.020.12 . . .Boron 0.0030.01 0.0030.01 0.0030.01 . 0.006 maxIron 5.00 max 2.00 max 4.00 max 5.009.00 remainderBCopper . 0.50 max 0.15 max 0.50 max 0.30 maxNickel remainderBremainderBremainderB70.00 min 50.055.0UNS N07080(Form
24、erlyGrade 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 18.0021.00 14.5017.00 19.522.
25、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 . 0.50 max 1.53.0 .Z
26、irconium . 0.050 max . .Vanadium . 70.0 min . .Nickel remainderB70.0 min 42.046.0 55.059.0AIf determined.BThe element shall be determined arithmetically by difference. Chromium content was corrected editorially.B63706127.1.4 Straightness for Cold-Worked and Hot-Worked Rodand BarThe maximum curvature
27、 (depth of chord) shall notexceed 0.050 in. multiplied by the length in feet 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
28、and tolerances shall be asspecified on the order, sketch, or drawing.7.1.6 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, commercial
29、ly straight or flat, and free of injuriousimperfections.TABLE 2 Heat TreatmentAAlloyRecommendedAnnealing TreatmentRecommended SolutionTreatmentRecommended StabilizingTreatmentPrecipitation HardeningTreatmentN07252 . 1950 6 25F 1066 614C, hold 4 h, air cool. 1400 6 25F 760 6 14C,hold 15 h, air cool o
30、rfurnace coolN07001 . 1825 to 1900F 996 to1038C, hold 4 h, oilor water quench1550 6 25F 843 6 14C,hold 4 h, air cool1400 6 25F 760 6 14C,hold 16 h, air cool orfurnace coolN07500 2150 6 25F 1177 614C, hold 2 h, aircool (bars only)1975 6 25F 1080 614C, hold 4 h, air cool1550 6 25F 843 6 14C,hold 24 h,
31、 air cool1400 6 25F 760 6 14C,hold 16 h, air cool orfurnace coolN07750 Type 1(Service above1100F) 593C. 2100 6 25F 1149 614C, hold 2 to 4 h, aircool1550 6 25F 843 6 14C,hold 24 h, air cool1300 6 25F 704 6 14C,hold 20 h, air cool orfurnace coolN07750 Type 2(Service up to1100F) 593C. 1800 6 25F 982 61
32、4C, hold12 h min,cool at rate equivalentto air cool or faster. 1350 6 25F 732 6 14C,hold 8 h, furnace cool to1150 6 25F 6216 14C,hold until total precipitationheat treatment hasreached 18 h, air coolN07750 Type 3 . 1975 2050F 1079 1121C, hold 1 to 2 h,air cool. 1300 6 25F 704 6 14C,hold20h,+40h,air
33、coolN07752 Type 1 . 1975 6 25F 1080 614C, hold 1 to 2 h,cool by water or oilquenching. 1320 6 25F 715 6 14C,hold20h,+2,0h,air coolN07752 Type 2 . 1975 6 25F 1080 614C, hold 1 to 2 h,cool by water or oilquenching. 1400 6 25F 760 6 14C,hold 100 h, + 4, 0 h,air coolN07718 . 1700 to 1850F 924 to1010C, h
34、old12 h min,cool at rate equivalentto air cool or faster. 1325 6 25F 718 6 14C,hold at temperature for 8h, furnace cool to 11506 25F 621 6 14C,hold until total precipitationheat treatment time hasreached 18 h, air coolN07080 . 1950 6 25F 1066 614C, hold 8 h,air cool1560 6 25F 849 6 14C,hold 24 h, ai
35、r cool1290 6 25F 699 6 14C,hold 16 h, air coolN07725 . 1900 6 25F1038 6 14C,hold12 min,and 4 h max,cool at rate equivalentto air cool. 1350 6 25F 732 6 14C,hold at temperaturefor 5 to 812 h,furnace coolto 1150 6 25F621 6 14C,hold at temperaturefor 5 to 812 h,air cool or fasterN09925 . 1825 to 1875F9
36、96 to 1024C,hold12 min,and 4 h max,cool at rate equivalentto air cool or faster. 1365 6 25F 740 6 14C,hold at temperaturefor 6 to 9 hr,furnace cool to 1150 6 25F621 6 14C,hold until total precipitationheat treatment time hasreached 18 h, air cool orfasterAThe purchaser shall designate on the purchas
37、e order or inquiry any partial stage of heat treatment required on material to be shipped.B6370613TABLE 3 Tensile and Hardness RequirementsAAlloy Heat TreatmentTensileStrength,min, psiMPaYieldStrength(0.2 %offset), min,psi MPaElongation in2 in. 50mmor 4D,min, %Reductionof Area,min, %BrinellHardnessN
38、07252 solution + precipitation harden 160 000110090 00062020 18 310 minN07001 solution + stabilize + precipitation harden 160 0001100110 00076015B18B310 minN07500 (rod andbar)anneal + solution + stabilize + precipitation harden 175 000120105 00072515 15 310 minN07500 (forgings) solution + stabilize
39、+ precipitation harden 170 0001170100 00069020 18 310 minN07750 Type 1 solution at 2100F 1149C +stabilize + precipitation harden140 00096590 0006208 . 262 minN07750 Type 2Csolution at 1800F 982C + precipitation harden 170 0001170115 00079018 18 302 to 363N07750 Type 2Dsolution at 1800F 982C + precip
40、itation harden 170 0001170115 00079015(10)E15(12)E302 to 363N07750 Type 3 solution anneal at 2000F 1093C + precipitationharden160 0001103, min185 0001276, max100 000689, min130 000896, max20 20 267363,Bm2740, RcN07752 Type 1 solution anneal at 1975F 1080C + precipitationharden160 0001103, min100 000
41、689, min20 20 267 to 363,Ba185 0001276, max130 000896, max27 to 40, RcN07752 Type 2 solution anneal at 1975F (1080C) + precipitationharden140 00096585 000058520 20 .N07718 solution + precipitation harden 185 0001275150 000103412(6)E15(8)E331 minN07080 solution + stabilize + precipitation harden 135
42、00093090 00062020 . .N07725 solution + precipitation harden 150 0001034120 00082720 35 43, Rc maxN09925Fsolution + precipitation harden 140 000965105 00072418 25 38, Rc maxN09925Gsolution + precipitation harden 140 000965110 00075818 25 38, Rc maxAThe supplier shall demonstrate that the material wil
43、l meet fully heat-treated properties after full heat treatment in accordance with Table 2.BForgings.CUp to 2.50 in. 63.5 mm, exclusive.D2.50 to 4.00 in. 63.5 to 101.6 mm, exclusive.EThese values apply for tension specimens machined tangentially from near the center of large disk forgings over 50 in.
44、23225.8 mm2 in cross section or radially fromrings 3 in. 76.2 mm or more in thickness.FCold worked, solution annealed and aged, 0.625 in. 15.9 mm to 3 in. 76.2 mm, inclusive.GHot worked, solution annealed and aged, 1 in. 25.4 mm or over.TABLE 4 Stress-Rupture RequirementsAAlloy Heat TreatmentTestTem
45、perature,F CStress, psiMPaBMinimumHoursElongation in 2 in. or 50mm (or 4D), min, %N07252 solution + precipitation harden 150081630 000205100 10N07001 solution + stabilize + precipitation harden 150081633 000230100 5N07500 (rod and bar) anneal + solution + stabilize + precipitation harden 150081638 0
46、00260100 5N07500 (forgings) solution + stabilize + precipitation harden 150081638 000260100 5N07750 Type 1 solution at 2100F 1149C + stabilize + precipitationharden135073245 000310100 5 (3 if hours exceed136)N07718 solution + precipitation harden 1200649100 00069023 5N07080 solution + stabilize + pr
47、ecipitation harden 140076047 00032523 3.5N09925Asolution + precipitation harden . . . .N07725Asolution + precipitation harden . . . .AThe supplier shall demonstrate that the material will meet fully heat-treated properties after full heat treatment in accordance with Table 2. Stress rupture is not r
48、equiredfor alloys N09925 and N07725.BTest specimens meeting minimum requirements may be overloaded to produce rupture in a reasonable and practical time period.B63706149. Sampling9.1 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, a lot
