1、Designation: B637 15B637 16Standard 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
2、year oforiginal 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.
3、Department of Defense.1. Scope Scope*1.1 This specification2 covers hot- and cold-worked precipitation-hardenable nickel alloy rod, bar, forgings, and forging stockfor moderate or high temperature service (Table 1).1.2 The values stated in inch-pound units are to be regarded as standard. The values
4、given in parentheses are mathematicalconversions to SI units that are provided for information only and are not considered standard.1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to becom
5、e familiar with all hazards including those identified in the appropriate Safety Data Sheet(SDS) for this product/material as provided by the manufacturer, to establish appropriate safety and health practices, anddetermine the applicability of regulatory limitations prior to use.2. Referenced Docume
6、nts2.1 ASTM Standards:3B880 Specification for General Requirements for Chemical Check Analysis Limits for Nickel, Nickel Alloys and Cobalt AlloysE8 Test Methods for Tension Testing of Metallic MaterialsE29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specification
7、sE139 Test Methods for Conducting Creep, Creep-Rupture, and Stress-Rupture Tests of Metallic MaterialsE1473 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
8、 section in straight lengths.3.1.2 rod, nmaterial of round solid section furnished in straight lengths.4. Ordering Information4.1 It is the responsibility of the purchaser to specify all requirements that are necessary for material ordered under thisspecification. Examples of such requirements inclu
9、de, but are not limited to, the following:4.1.1 Alloy (Table 1).4.1.2 Condition (temper or cold worked) (Tables 2 and 3 and 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
10、 pieces).1 This specification is under the jurisdiction ofASTM Committee B02 on Nonferrous Metals andAlloys and is the direct responsibility of Subcommittee B02.07 on RefinedNickel and Cobalt and Their Alloys.Current edition approved Oct. 1, 2015Oct. 1, 2016. Published November 2015October 2016. Ori
11、ginally approved in 1970. Last previous edition addition approved in20122015 as B637 12 15.1. DOI: 10.1520/B0637-15.10.1520/B0637-16.2 For ASME Boiler and Pressure Vessel Code applications, see related Specification SB-637 in Section II of that Code.3 For referencedASTM standards, visit theASTM webs
12、ite, 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.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indicatio
13、n of what changes 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 consid
14、ered the official 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 States1TABLE 1 Chemical RequirementsElement Composition Limits, %UNSN07022UNSN07208UNSN07252(Formerly
15、Grade 689)UNSN07001(FormerlyGrade 685)UNSN07500(FormerlyGrade 684)UNS N07750(FormerlyGrade 688)UNSN07718(FormerlyGrade 718)Carbon 0.010 max 0.040.08 0.100.20 0.030.10 0.15 max 0.08 max 0.08 maxManganese 0.5 max 0.3 max 0.50 max 1.00 max 0.75 max 1.00 max 0.35 maxSilicon 0.08 max 0.15 max 0.50 max 0.
16、75 max 0.75 max 0.50 max 0.35 maxPhosphorus 0.025 max 0.015 max 0.015 max 0.030 max 0.015 max . 0.015 maxSulfur 0.015 max 0.015 max 0.015 max 0.030 max 0.015 max 0.01 max 0.015 maxChromium 20.021.4 18.520.5 18.0020.00 18.0021.00 15.0020.00 14.0017.00 17.021.0Cobalt 1.0 max 9.011.0 9.0011.00 12.0015.
17、00 13.0020.00 1.00 maxA 1.0 maxAMolybdenum 15.517.4 8.09.0 9.0010.50 3.505.00 3.005.00 . 2.803.30Columbium(Nb) + tantalum. . . . . 0.701.20 4.755.50Titanium . 1.902.30 2.252.75 2.753.25 2.503.25 2.252.75 0.651.15Aluminum 0.5 max 1.381.65 0.751.25 1.201.60 2.503.25 0.401.00 0.200.80Zirconium . 0.020
18、max . 0.020.12 . . .Boron 0.006 max 0.0030.010 0.0030.01 0.0030.01 0.0030.01 . 0.006 maxIron 1.8 max 1.5 max 5.00 max 2.00 max 4.00 max 5.009.00 remainderBCopper 0.5 max 0.1 max . 0.50 max 0.15 max 0.50 max 0.30 maxNickel remainderB remainderB remainderB remainderB remainderB 70.00 min 50.055.0Tanta
19、lum 0.2 max 0.1 max . . . . .Columbium(Niobium). 0.2 max . . . . .Tungsten 0.8 max 0.5 max . . . . .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 maxPhosphoru
20、s . 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 19.522.5 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
21、 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 .Zirconium . 0.050 max . .Vanadium . 0.10 max . .Nickel remainderB 70.0 min 42.046.0 55.059.0TABLE 1 Chemical RequirementsElement Composition Limits, %UNSN07022UNSN07208UNSN07252(Formerly
22、Grade 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 1.00 max 0.75 max 1.00 max 1.00 max 0.35 maxSilicon 0.
23、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 20.021.4 18.520.5 18.0020.00 18.0021.00 15.0020.00 23.5
24、025.50 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 maxA 1.0 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 . 1.902.30 2.252.75 2.753.25 2.503.25 0.502.50 2.252.7
25、5 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 4.00 max 3.00 max 5.009.00 remainderBCopper 0.5 max
26、0.1 max . 0.50 max 0.15 max 0.50 max 0.50 max 0.30 maxNickel remainderB remainderB remainderB remainderB remainderB remainderB 70.00 min 50.055.0Tantalum 0.2 max 0.1 max . . . . . .Columbium(Niobium). 0.2 max . . . 0.502.50 . .B637 1624.1.6 Forging StockSpecify if material is stock for reforging.4.1
27、.7 Finish.4.1.8 CertificationState if certification is required (Section 15).4.1.9 Samples for Product (Check) AnalysisWhether samples for product (check) analysis shall be furnished (9.2).4.1.10 Purchaser InspectionIf the purchaser wishes to witness tests or inspection of material at the place of m
28、anufacture, thepurchase order must so state indicating which tests or inspections are to be witnessed (Section 13).5. Chemical Composition5.1 The material shall conform to the requirements as to chemical composition prescribed in Table 1.5.2 If a product (check) analysis is performed by the purchase
29、r, the material shall conform to the product (check) analysisvariations prescribed in Specification B880.6. Mechanical Properties6.1 Unless otherwise specified, the material shall be supplied in the cold worked or solution treated condition, suitable forsubsequent age hardening.6.2 The cold worked o
30、r solution treated material shall be capable of meeting the mechanical property requirements of Table 3,and the stress rupture requirements of Table 4 (except alloys UNS N07022, N09925 and N07725), following the precipitationhardening treatment described in Table 2.6.3 When the material is to be sup
31、plied in the cold worked or solution treated plus aged condition, the requirements of Table3 and Table 4 (except alloys UNS N07022, N09925 and N07725) shall apply, with the precipitation hardening treatment of Table2, or as agreed upon between the purchaser and the manufacturer as part of the purcha
32、se contract.7. Dimensions and Permissible Variations7.1 Diameter, Thickness, or WidthThe permissible variations from the specified dimensions of cold-worked rod and bar shallbe as prescribed in Table 5, and of hot-worked rod and bar as prescribed in Table 6.7.1.1 Out of RoundCold-worked and hot-work
33、ed rod, all sizes, in straight lengths, shall not be out-of-round by more than onehalf the total permissible variations in diameter shown in Table 5 and Table 6, except for hot-worked rod 12 in. (12.7 mm) andunder, which may be out-of-round by the total permissible variations in diameter shown in Ta
34、ble 6.7.1.2 CornersCold-worked bar shall have practically exact angles and sharp corners.7.1.3 Cut LengthsA specified length to which all rod and bar will be cut with a permissible variation of + 18 in. (3.18 mm),0 for sizes 8 in. (203 mm) and less in diameter or the distance between parallel surfac
35、es. For larger sizes, the permissible variationshall be + 14 in. (6.35 mm), 0.Element Composition Limits, %UNSN07022UNSN07208UNSN07252(FormerlyGrade 689)UNSN07001(FormerlyGrade 685)UNSN07500(FormerlyGrade 684)UNSN07740UNSN07750(FormerlyGrade 688)UNSN07718(FormerlyGrade 718)Tungsten 0.8 max 0.5 max .
36、 . . . . .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 18.0
37、021.00 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 remainderBCo
38、pper . 0.50 max 1.53.0 .Zirconium . 0.050 max . .Vanadium . 0.10 max . .Nickel remainderB 70.0 min 42.046.0 55.059.0A If determined.B The element shall be determined arithmetically by difference.B637 163TABLE 2 Heat TreatmentAAlloy RecommendedAnnealing Treatment Recommended SolutionTreatment Recomme
39、nded StabilizingTreatment Precipitation HardeningTreatmentN07022B Type 1A or 1B . 1800 to 2100F (982 to1149C), hold 12 h/in.,5 minutes minimum,rapid air cool orwater quench.N07022B Type 1A or 1B . 1800 to 2100F (982 to1149C), hold 12 h/in.,5 minutes minimum,rapid air cool orwater quench.N07022C Type
40、 2 . 1800 to 2100F (982 to1149C),hold 12 h/in.,5 minutes minimum,rapid air cool orwater quench. 1125 25F (605 14C),hold 10 h, air coolBN07022C Type 2 . 1800 to 2100F (982 to1149C),hold 12 h/in.,5 minutes minimum,rapid air cool orwater quench. 1125 25F (605 14C),hold 10 h, air coolBN07022 Type 3 . 18
41、00 to 2100F (982 to1149C), hold 12 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 coolN07022 Type 3 . 1800 to 2100F (982 to1149C), hold 12 h/in.,5 minutes minimum,rapid air cool orwater quench. 1300 25F (705 14C),
42、hold 16 h, furnace cool to1125 25F (605 14C),hold 32 h, air coolN07208 . 2000 to 2125F (1093 to1163C), hold 12 h/in.,5 to 10 minutes minimum,water quench orrapid air cool. 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,
43、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 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), hol
44、d 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, hold 1 h per in.of thickness with 12 hminimim hold, waterquench or rapid air cool. 1400 to 1500F (760 to815C), hold 4 h minimum forup to 2 in. thickness +additiona
45、l 12 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 25F (704 14C),hold 20 h, air cool or furnacecoolN07750 Type 2(Service up to1100F) (593C). 1800 25F (982 14C), hold 12 h m
46、in, 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 coolN07750 Type 3 . 1975 2050F (1079 1121C), hold 1 to 2 h, aircool. 1300 25F (704 14C),hold 20 h, + 4 0 h, air coolB637
47、1647.1.4 Straightness for Cold-Worked and Hot-Worked Rod and BarThe maximum curvature (depth of chord) shall not exceed0.050 in. multiplied by the length in feet (0.04 mm multiplied by the length in centimetres). Material under 12 in. (12.7 mm) indiameter or the distance between parallel surfaces sh
48、all be reasonably straight and free of sharp bends and kinks.7.1.5 For forgings, dimensions and tolerances shall be as specified on the order, sketch, or drawing.7.1.6 Dimensions and tolerances for forging stock shall be as 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 LotDefinition:9.1.1 A lot for chemical analysis shall consist of one heat.9.1.2 Mechanical P
