1、Designation: B 639 02 (Reapproved 2008)Standard Specification forPrecipitation Hardening Cobalt-Containing Alloys (UNSR30155 and UNS R30816) Rod, Bar, Forgings, and ForgingStock for High-Temperature Service1This standard is issued under the fixed designation B 639; the number immediately following t
2、he designation indicates the 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 (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification cov
3、ers hot- and cold-worked precipi-tation hardenable cobalt-containing alloys (UNS R30155 andUNS R30816) rod, bar, forgings, and forging stock for high-temperature service.1.2 The values stated in inch-pound units are to be regardedas the standard. The values given in parentheses are forinformation on
4、ly.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 Data Sheet (MSDS) for this product/materia
5、las 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:2B 880 Specification for General Requirements for ChemicalCheck Analysis Limits for Nickel, Nickel Al
6、loys 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 Metallic MaterialsE 1473 Test Methods for
7、 Chemical Analysis of Nickel,Cobalt, and High-Temperature Alloys3. Terminology3.1 Definitions of Terms Specific to This Standard: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 instrai
8、ght 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 Name or UNS Number (see Table 1).4.1.2
9、ASTM Designation, including year of issue.4.1.3 Condition (temper) (Table 4).4.1.4 SectionRod or bar (round, rectangle, square, hexa-gon, octagon).4.1.4.1 Forging (sketch or drawing).4.1.5 Dimensions, including length.4.1.6 Quantity (mass or number of pieces).4.1.7 Forging stockSpecify if material i
10、s stock for reforg-ing.4.1.8 Finish.4.1.9 CertificationState if certification or a report of testresults is required (Section 15).4.1.10 Samples for Product (Check) AnalysisWhethersamples for product (check) analysis should be furnished (9.2).4.1.11 Purchaser InspectionIf the purchaser wishes towitn
11、ess the 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).5. Chemical Composition5.1 The material shall conform to the chemical compositionlimits specified in Table 1.1This specification
12、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.* New designation established in accordance with Practices E 527 and SAEJ1086. Practice for Numbering Metals and Alloys
13、(UNS).Current edition approved March 1, 2008. Published March 2008. Originallyapproved in 1970. Last previous edition approved in 2002 as B 639 02.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandard
14、s volume information, refer to the standards Document Summary page onthe ASTM website.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 p
15、roduct (check)analysis variations per Specification B 880.6. Mechanical Requirements6.1 Tensile and Hardness RequirementsThe material shallconform to the requirements for tensile and hardness propertiesin Table 2.6.2 Stress-Rupture RequirementsThe material shall con-form to the requirements for stre
16、ss-rupture properties in Table3.7. 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 6.7.1.1 Out-of-RoundCold
17、-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-of-round by the totalpermissible variations in diam
18、eter 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. (203 mm) and less in diameter orTABLE 1 Chemical Requi
19、rementsElement Composition Limits, % Composition Limits, %UNS R30155 (FormerlyGrade 661)UNS R30816 (FormerlyGrade 671)Carbon 0.08 to 0.16 0.32 to 0.42Manganese 1.00 to 2.00 1.00 to 2.00Silicon 1.00 max 1.00 maxPhosphorus 0.040 max 0.040 maxSulfur 0.030 max 0.030 maxChromium 20.00 to 22.50 19.00 to 2
20、1.00Nickel 19.00 to 21.00 19.00 to 21.00Molybdenum 2.50 to 3.50 3.50 to 4.50Tungsten 2.00 to 3.00 3.50 to 4.50Columbium + tantalum 0.75 to 1.25 3.50 to 4.50Iron remainderA5.00 maxCobalt 18.50 to 21.00 40.00 minNitrogen 0.20 max .AElement shall be determined arithmetically by difference.TABLE 2 Tensi
21、le and Hardness RequirementsAAlloy Heat TreatmentTensile Strength,min, psi (MPa)Yield Strength (0.2 %offset), min, psi (MPa)Elongation in 2 in.or 50.8 mm or 4D,min, %Reductionof Area,min, %BrinellHardness,minR30155 solution + precipitation harden 110 000 (760) 50 000 (345) 30 30 192R30816 solution +
22、 precipitation harden 130 000 (895) 60 000 (415) 20 20 248AThe supplier shall demonstrate that the material will meet fully heat-treated properties after full heat treatment in accordance with Table 4.TABLE 3 Stress-Rupture RequirementsAAlloy Heat TreatmentTest Temperature, F(C)Stress, psi (MPa)BMin
23、imum, hElongation in 2 in. or 50.8mm, or 4D,min,%R30155 solution + precipitation harden 1350 (732) 24 000 (165) 100 10R30816 solution + precipitation harden 1350 (732) 38 000 (260) 100 8AThe supplier shall demonstrate that material will meet fully heat-treated properties after full heat treatment in
24、 accordance with Table 4.BTest specimens meeting minimum requirements may be overloaded to produce rupture in a reasonable and practical time period.TABLE 4 Heat TreatmentAAlloyRecommended SolutionTreatmentPrecipitation Hardening TreatmentR30155 2125 to 2175F (1162 to1190C) hold 30 min,minimum, wate
25、r quench1475 to 1525F (801 to 829C)hold 4 h, air cool or furnacecoolR30816 2130 to 2170F (1165 to1187C), hold 1 h, waterquench1390 to 1410F (754 to 765C)hold 12 h, air cool or furnacecoolAThe purchaser shall designate on the purchase order or inquiry any partialstage of heat treatment required on th
26、e material to be shipped.TABLE 5 Permissible Variations in Diameter or DistanceBetween Parallel Surfaces of Cold-Worked Rod and BarSpecified Dimension, in. (mm)APermissible Variations fromSpecified Dimension, in. (mm)+Rods:116 to316 (1.59 to 4.76), excl 0 0.002 (0.051)316 to12 (4.76 to 12.70), excl
27、0 0.003 (0.076)12 to1516 (12.70 to 23.81), incl 0.001 (0.025) 0.002 (0.051)Over1516 to 11516 (23.81 to 49.2),incl0.0015 (0.038) 0.003 (0.076)Over 11516 to 212 (49.2 to 63.5), incl 0.002 (0.051) 0.004 (0.102)Bars:116 to316 (1.59 to 4.76), excl 0 0.002 (0.051)316 to12 (4.76 to 12.7), excl 0 0.003 (0.0
28、76)ADimensions apply to the diameter of rods, to the distance between parallelsurfaces of hexagonal, octagonal, and square bar, and separately to the width andthickness of rectangular bar.B 639 02 (2008)2distance between parallel surfaces. For larger sizes, the per-missible variation shall be +14 in
29、. (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 distance between parallel surfac
30、esshall 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 supplier.8. Workmanship, Finish,
31、 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 for tension, hardness,and stre
32、ss-rupture testing shall consist of all material from thesame heat, nominal diameter or thickness, or forging size, andcondition (temper).9.1.2.1 A lot for forging stock 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)
33、 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.9.2.2 Mechanical PropertiesSamples
34、 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.10.4 Stress-RuptureOne test per lo
35、t.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 cross-section size test cannotbe
36、performed, the largest possible round specimen shown inTest Methods E8shall 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 full size.11.1.3 Forging stock test
37、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 any pointmidway between the center
38、 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 Methods E8.11.3 Stress-rupture specim
39、ens shall be the same as tensionspecimens except modified as necessary for stress-rupturetesting in accordance with Test Methods E 139.12. Test Methods12.1 Determine the chemical composition, mechanical andother properties of the material as enumerated in this specifi-cation, in case of disagreement
40、, in accordance with thefollowing methods:Test ASTM DesignationChemical analysis E 1473Tension E8Rounding procedure E29Stress rupture E 13912.2 For purposes of determining compliance with thespecified limits for requirements of the properties listed in thefollowing table, an observed value or a calc
41、ulated value shallbe rounded as indicated, in accordance with the roundingmethod of Practice E29.Test Rounded Unit for Observed orCalculated ValueChemical composition, hard-ness, and tolerances (whenexpressed in decimals)nearest unit in the last right-hand place offigures of the specified limit. If
42、twochoices are possible, as when the digitsdropped are exactlya5ora5followedonly by zeros, choose the one ending inan even digit, with zero defined as aneven digit.Tensile strength and yieldstrengthnearest 1000 psi (6.9 MPa)Elongation nearest 1 %Rupture Life 1 h13. Inspection13.1 Inspection of the m
43、aterial shall be as agreed uponbetween the purchaser and the supplier as part of the purchasecontract.TABLE 6 Permissible Variations in Diameter or DistanceBetween Parallel Surfaces of Hot-Worked Rods and BarsSpecified Dimension, in. (mm)APermissible Variations fromSpecified Dimension, in. (mm)+Rod
44、and bar, hot-finished:1 (25.4) and under 0.016 (0.41) 0.016 (0.41)Over 1 to 2 (25.4 to 50.8), incl 0.031 (0.79) 0.016 (0.41)Over 2 to 4 (50.8 to 101.6), incl 0.047 (1.19) 0.031 (0.79)Over 4 (101.6) 0.125 (3.18) 0.063 (1.60)Rod, hot-finished and rough-turned orground:Under 1 (25.4) 0.005 (0.13) 0.005
45、 (0.13)1 (25.4) and over 0.031 (0.79) 0B 639 02 (2008)314. Rejection and Rehearing14.1 Material that fails to conform to the requirements ofthis specification may be rejected. Rejection should be reportedto the producer or supplier promptly and in writing. In case ofdissatisfaction with the results
46、of the test, the producer orsupplier may make claim for a rehearing.15. Certification15.1 When specified in the purchase order or contract, amanufacturers certification shall be furnished to the purchaserstating that material has been manufactured, tested, and in-spected in accordance with this spec
47、ification, and that the testresults on representative samples meet specification require-ments. When specified in the purchase order or contract, areport of the test results shall be furnished.16. Product Marking16.1 The following shall be marked on the material orincluded on the package, or on a la
48、bel or tag attached thereto:the name of the material or UNS Number, heat number,condition (temper), this specification number, the size, gross,tare, and net weight, consignor and consignee address, contractor order number, or such other information as may be definedin the contract or order.17. Keywo
49、rds17.1 bar; forgings; rod; R30155; R30816ASTM 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 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 r
