1、Designation: B637 121Standard 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 o
2、foriginal 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 Department
3、of Defense.1NOTEVanadium content for UNS N07752 in Table 1 was corrected editorially in November 2012.1. Scope1.1 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
4、stated in inch-pound units are to be regardedas standard. The values given in parentheses 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
5、 use. It is theresponsibility of the user of this standard to become familiarwith all hazards including those identified in the appropriateMaterial Safety Data Sheet (MSDS) for this product/materialas provided by the manufacturer, to establish appropriatesafety and health practices, and determine th
6、e applicability ofregulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:3B880 Specification for General Requirements for ChemicalCheck Analysis Limits for Nickel, Nickel Alloys andCobalt AlloysE8 Test Methods for Tension Testing of Metallic MaterialsE29 Practice for Using Sig
7、nificant Digits in Test Data toDetermine Conformance with SpecificationsE139 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, n
8、material of rectangular (flats), hexagonal,octagonal, or square solid section in straight lengths.3.1.2 rod, nmaterial of round solid section furnished instraight lengths.4. Ordering Information4.1 It is the responsibility of the purchaser to specify allrequirements that are necessary for material o
9、rdered 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 cold 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.
10、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 certification is required (Sec-tion 15).4.1.9 Samples for Product (Check) AnalysisWhethersamples for product (check) analys
11、is shall be furnished (9.2).4.1.10 Purchaser InspectionIf the purchaser wishes towitness tests or inspection of material at the place ofmanufacture, the purchase order must so state indicating whichtests or inspections are to be witnessed (Section 13).1This specification is under the jurisdiction of
12、 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 May 1, 2012. Published May 2012. Originallyapproved in 1970. Last previous edition addition approved in 2011 asB637 06 (201
13、1). DOI: 10.1520/B063712E01.2For 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 website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards
14、volume information, refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States15. Chemical Composition5.1 The material shall conform to the requirements as tochemical composition pr
15、escribed in Table 1.5.2 If a product (check) analysis is performed by thepurchaser, 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 solu
16、tion treated condition, suitablefor subsequent age hardening.6.2 The cold worked 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 theprecipita
17、tion hardening treatment described in Table 2.6.3 When the material is to be supplied 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
18、as agreed upon between the purchaser andthe manufacturer as part 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 prescribed in Table 5, and of hot-worked
19、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 in. (12.7TABLE 1 Chemical Requirem
20、entsElement Composition Limits, %UNS N07022 UNS N07208UNS N07252(FormerlyGrade 689)UNS N07001(FormerlyGrade 685)UNS N07500(FormerlyGrade 684)UNS N07750(FormerlyGrade 688)UNS N07718(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
21、max 1.00 max 0.75 max 1.00 max 0.35 maxSilicon 0.08 max 0.15 max 0.50 max 0.75 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 18.002
22、1.00 15.0020.00 14.0017.00 17.021.0Cobalt 1.0 max 9.011.0 9.0011.00 12.0015.00 13.0020.00 1.00 maxA1.0 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
23、max 1.381.65 0.751.25 1.201.60 2.503.25 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 . 0.006 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 rem
24、ainderBremainderBremainderBremainderBremainderB70.00 min 50.055.0Tantalum 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
25、 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 19.522.5 19.0022.50Cobalt . 0.050 max . .Molybdenum . . 2.53.5 7.009.50Columbium(Nb) + tantalum. 0.701.20 0.5 max (Nb only)
26、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 .Zirconium . 0.050 max . .Vanadium . 0.10 max . .Nickel remainderB70.0 min 42.046.0 55.059.0AIf determined.BThe element
27、 shall be determined arithmetically by difference. Chromium content was corrected editorially. Vanadium content was corrected editoriallyB637 1212mm) 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 practical
28、ly ex-act angles and sharp corners.TABLE 2 Heat TreatmentAAlloyRecommendedAnnealing TreatmentRecommended SolutionTreatmentRecommended StabilizingTreatmentPrecipitation HardeningTreatmentN07022BType 1 . 1800 to 2000F (982 to1093C), hold12 h/in.,5 minutes minimum,rapid air cool orwater quench.N07022CT
29、ype 2 . 1800 to 2000F (982 to1093C), hold12 h/in.,5 minutes minimum,rapid air cool orwater quench. 1125 25F (605 14C),hold 10 h, air coolBN07022 Type 3 . 1800 to 2000F (982 to1093C), hold12 h/in.,5 minutes minimum,rapid air cool orwater quench. 1300 25F (705 14C),hold 16 h, furnace cool to1125 25F (
30、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. 1850 25F (1010 14C),hold 2 h, air cool, followed by1450 25F (788 14C),hold 8 h, air coolN07252 . 1950 25F (106614C), hold 4 h, air cool. 1400 25F (760 14C),hold 15 h
31、, 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 (108014C), hold 4 h, air cool1550 25F (843 14C),hold
32、24 h, air cool1400 25F (760 14C),hold 16 h, air cool or furnacecoolN07750 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 1
33、4C), 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 coolN07750 Type 3 . 1975 2050F (1079 1121C), hold 1 to 2 h, aircool. 1300 25F (704 14C),hold20h,+40h,airco
34、olN07752 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 or oil quenching. 1400 25F (760 14C),hold 100 h, + 4, 0 h, aircoolN07718 . 1700 to 1850F (924 to1010C)
35、, 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 reached18 h, air coolN07080 . 1950 25F (1066 14C), hold 8 h, air cool1560 25F (849 14C),hold 24 h, air
36、cool1290 25F (699 14C),hold 16 h, air coolB637 12137.1.3 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. (203 mm) and less in diameter or thedistance between parallel surfaces. For larger sizes, the per-missible va
37、riation 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 feet (0.04 mmmultiplied by the length in centimetres). Material under12 in.(12.7 mm) in diameter or the dista
38、nce 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.7.1.6 Dimensions and tolerances for forging stock shall beas agreed upon between the purchaser and the manuf
39、acturer.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 PropertiesA lot
40、 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 shall consist of one heat.9.1.2.2 Where material cannot be identified by heat, a lotshall consist
41、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 subsequent processing.9.2.1.1 Product (Check) Analysis shall be wholly the re-sponsibility of the purchaser.9.
42、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 Tests10.1 Chemical AnalysisOne test per lot.10.2 TensionOne test per lot.10.3 HardnessOne test per lot.10
43、.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 offabrication.11.1.2 All rod and bar shall be tested in full cross-sectionsize when possible. When a full c
44、ross-section size test cannotbe performed, the largest possible round specimen shown inTest Methods E8 shall be used. Longitudinal strip specimensshall be prepared in accordance with Test Methods E8 forrectangular bar up to12 in. (12.7 mm), inclusive, in thickness,which are too wide to be pulled ful
45、l 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:11.2.1 The tension test specimen representing each lot shallbe taken from a forging or from a test prolongation.11.2.2 The axis of the specimen shall be located at a
46、ny pointmidway between the center and the surface of solid forgingsand at any point midway between the inner and outer surfacesof the wall of hollow forgings, and shall be parallel to thedirection of greatest metal flow.11.2.3 The specimens shall be the largest possible round-type shown in Test Meth
47、ods E8.TABLE 2 ContinuedAlloyRecommendedAnnealing TreatmentRecommended SolutionTreatmentRecommended StabilizingTreatmentPrecipitation HardeningTreatmentN07725 . 1900 25F (1038 14C), hold12 min, and 4h max, cool at rateequivalent to air cool. 1350 25F (732 14C), hold at temperaturefor 5 to 812 h, fur
48、nace coolto 1150 25F (621 14C),hold at temperature for 5 to812 h, air cool or fasterN09925 . 1825 to 1875F (996 to1024C), hold12 min,and 4 h max, cool at rateequivalent to air cool orfaster. 1365 25F (740 14C), hold at temperaturefor 6 to 9 hr, furnace cool to1150 25F (621 14C), hold until totalprecipitation heat treatmenttime has reached 18 h, aircool or fasterAThe purchaser shall designate on the purchase order or inquiry any partial stage of heat treatment required on material to be shipped.BFor solution treated + cold worked material only, when specif
