1、Designation: B 639 02Standard 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 the designation ind
2、icates 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 covers hot- and cold-
3、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 only.1.3 This standa
4、rd 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 for this product/material as pro-vided by the man
5、ufacturer, to establish appropriate safety andhealth practices, and determine the applicability of regulatorylimitations prior to use.2. Referenced Documents2.1 ASTM Standards:B 880 Specification for General Requirements for ChemicalCheck Analysis Limits for Nickel, Nickel Alloys andCobalt Alloys2E
6、8 Test Methods for Tension Testing of Metallic Materials3E 29 Practice for Using Significant Digits in Test Data toDetermine Conformance with Specifications4E 139 Test Methods for Conducting Creep, Creep-Rupture,and Stress-Rupture Tests of Metallic Materials3E 1473 Test Methods for Chemical Analysis
7、 of Nickel,Cobalt, and High-Temperature Alloys53. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 barmaterial of rectangular (flats), hexagonal, oc-tagonal, or square solid section in straight lengths.3.1.2 rodmaterial of round solid section furnished instraight lengths.4. Orderi
8、ng 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 ASTM Designation, inc
9、luding year of issue. Table2Table 34.1.3 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 stock Specify if material is stoc
10、k forreforging.4.1.8 Finish.4.1.9 Certification State 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 towitness the
11、 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 ASTM Committee B02 onNonferrous Metals and Alloys and is the direct responsibility of S
12、ubcommitteeB02.07 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 (UNS).Current edition approved Oct. 10, 2002. Published December 2002. Originallypublished as A 639 70. Redesignated
13、 B 639 in 1980. Last previous editionB639972Annual Book of ASTM Standards, Vol 02.04.3Annual Book of ASTM Standards, Vol 03.01.4Annual Book of ASTM Standards, Vol 14.02.5Annual Book of ASTM Standards, Vol 03.05.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA
14、19428-2959, United States.5. Chemical Composition5.1 The material shall conform to the chemical compositionlimits specified in Table 1.5.2 If a product (check) analysis is performed by thepurchaser, the material shall conform to the product (check)analysis variations per Specification B 880.6. Mecha
15、nical 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 stress-rupture properties in Table3.7. Dimensions and Permissible Vari
16、ations7.1 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-Round Cold-worked and hot-worked rod, allsizes, in straight lengths, shall
17、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 diameter shown in Table 6.7.1.2 CornersCold-worked bar shall have pra
18、ctically ex-act angles and sharp corners.7.1.3 Cut Lengths A specified length to which all rod andbar will be cut with a permissible variation of +18 in. (3.18TABLE 1 Chemical RequirementsElement Composition Limits, % Composition Limits, %UNS R30155 (FormerlyGrade 661)UNS R30816 (FormerlyGrade 671)C
19、arbon 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 21.00Nickel 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
20、 + 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 Tensile and Hardness RequirementsAAlloy Heat TreatmentTensile Strength,min, psi (MPa)Yield Strength (0.2 %offset), min, psi
21、(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 + precipitation harden 130 000 (895) 60 000 (415) 20 20 248AThe supplier shall demonstrate that the material will meet f
22、ully 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)BMinimum, hElongation in 2 in. or 50.8mm, or 4D, min, %R30155 solution + precipitation harden 1350 (732) 24 000 (165) 100 1
23、0R30816 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 accordance with Table 4.BTest specimens meeting minimum requirements may be overloaded to produce rupture in a reaso
24、nable and practical time period.TABLE 4 Heat TreatmentAAlloyRecommended SolutionTreatmentPrecipitation Hardening TreatmentR30155 2125 to 2175F (1162 to1190C) hold 30 min,minimum, water quench1475 to 1525F (801 to 829C)hold 4 h, air cool or furnacecoolR30816 2130 to 2170F (1165 to1187C), hold 1 h, wa
25、terquench1390 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 the material to be shipped.TABLE 5 Permissible Variations in Diameter or DistanceBetween Parallel Surfaces of Cold-Work
26、ed 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 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),incl0.00
27、15 (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 (0.076)ADimensions apply to the diameter of rods, to the distance between parallelsurfaces of hexagonal, octagonal, and s
28、quare bar, and separately to the width andthickness of rectangular bar.B639022mm), 0 for sizes 8 in. (203 mm) and less in diameter ordistance 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
29、 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 surfacesshall be reasonably straight and free of sharp bends and kinks.7.1.5
30、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, and Appearance8.1 The material shall be uniform in quality and conditi
31、on,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 stress-rupture testing shall consist of all material from thesame heat, nom
32、inal 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) of material in thesame size and condition (temper).9.2 Test Material S
33、election: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 of the material toprovide test specimens for mechanical properties sha
34、ll 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-Rupture One test per lot.11. Specimen Preparation11.1 Rod and Bar:11.1.1 Tension test specime
35、ns 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 performed, the largest possible round specimen shown inTest Methods E
36、8 shall be used. Longitudinal strip specimensshall be prepared in accordance with Test Methods E 8 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 specimens shall be taken from aforged-down coupon or a sample taken
37、 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 and the surface of solid forgingsand at any point midway between t
38、he 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 E 8.11.3 Stress-rupture specimens shall be the same as tensionspecimens except modified as neces
39、sary 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, in accordance with thefollowing methods:Test ASTM DesignationChe
40、mical analysis E 1473Tension E 8Rounding procedure E 29Stress 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 calculated value shallbe rounded as indicated, in accordance with th
41、e roundingmethod of Practice E 29.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 twochoices are possible, as when the digitsdropped are exactlya
42、5ora5followedonly 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 material shall be as agreed uponbetween the purchaser and the su
43、pplier 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 and bar, hot-finished:1 (25.4) and under 0.016 (0.41) 0.016 (0.
44、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 (0.13)1 (25.4) and over 0.031 (0.79) 0B63902314. Rejection and
45、 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 of the test, the producer orsupplier may make claim for a rehearing.15.
46、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 specification, and that the testresults on representative samples meet speci
47、fication 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 label or tag attached thereto:the name of the material or UNS Number, heat
48、 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. Keywords17.1 bar; forgings; rod; R30155; R30816ASTM International takes no po
49、sition 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 reapproved or withdrawn. Your comments are invited either for revision of th
