1、Designation: B815 02 (Reapproved 2016)Standard Specification forCobalt-Chromium-Nickel-Molybdenum-Tungsten Alloy(UNS R31233) Rod1This standard is issued under the fixed designation B815; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revisi
2、on, 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.1. Scope1.1 This specification2covers cobalt-chromium-nickel-molybdenum-tungsten alloy UNS R31233 in the form of r
3、odfor wear applications and general corrosion service.1.2 The following products are covered under this specifi-cation:1.2.1 Rods316 to34 in. (9.76 to 19.05 mm) exclusive indiameter, hot or cold finished, solution-annealed, and pickledor mechanically descaled; and1.2.2 Rods34 to 312 in. (19.05 to 88
4、.9 mm) inclusive indiameter, hot or cold finished, solution annealed, ground, orturned.1.3 The values 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 standar
5、d.1.4 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 appropriateSafety Data Sheet (SDS) for this product/material as provid
6、edby the manufacturer, to establish appropriate safety and healthpractices, and determine the applicability of regulatory limi-tations prior to use.2. Referenced Documents2.1 ASTM Standards:3B880 Specification for General Requirements for ChemicalCheck Analysis Limits for Nickel, Nickel Alloys andCo
7、balt AlloysE8 Test Methods for Tension Testing of Metallic MaterialsE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE55 Practice for Sampling Wrought Nonferrous Metals andAlloys for Determination of Chemical CompositionE1473 Test Methods for Chemical
8、 Analysis of Nickel, Co-balt and High-Temperature Alloys3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 rod, nproduct of round solid section furnished instraight lengths.4. Ordering Information4.1 It is the responsibility of the purchaser to specify allrequirements that are ne
9、cessary for material ordered under thisspecification. Examples of such requirements include, but arenot limited to, the following:4.1.1 Alloy.4.1.2 DimensionsNominal diameter and length. Theshortest usable multiple length shall be specified (Table 1).4.1.3 CertificationState whether certification or
10、 a reportof test results is required (Section 15).4.1.4 Purchaser InspectionState which tests or inspec-tions are to be witnessed (Section 13).4.1.5 Samples for Product (Check) AnalysisState whethersamples should be furnished (9.2.2).5. Chemical Composition5.1 The material shall conform to the chemi
11、cal compositionrequirements prescribed in Table 2.5.2 If a product (check) analysis is made by the purchaser,the material shall conform to the requirements specified inTable 2 subject to the permissible tolerances given in Specifi-cation B880.6. Mechanical Properties and Other Requirements6.1 The me
12、chanical properties of the material at roomtemperature shall conform to those given in Table 3.7. Dimensions, Mass, and Permissible Variations7.1 DiameterThe permissible variations from the speci-fied diameter shall be as prescribed in Table 4.1This specification is under the jurisdiction of ASTM Co
13、mmittee B02 onNonferrous Metals and Alloys and is the direct responsibility of SubcommitteeB02.07 on Refined Nickel and Cobalt and Their Alloys.Current edition approved June 1, 2016. Published June 2016. Originallyapproved in 1991. Last previous edition approved in 2011 as B815 02 (2011).DOI: 10.152
14、0/B0815-02R16.2For ASME Boiler and Pressure Vessel Code applications, see related Specifi-cation SB-815 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 informa
15、tion, 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 States17.2 Out-of-RoundnessThe permissible variation in round-ness shall be as prescribed in Table 4.7.3 Machining Allowanc
16、esWhen the surfaces of finishedmaterial are to be machined, the following allowances aresuggested for normal machining operations:7.3.1 As-Finished (Annealed and Descaled)For diametersof516 to1116 in. (7.94 to 17.46 mm) inclusive, an allowance of116 in. (1.59 mm) on the diameter should be made for f
17、inishmachining.7.4 Length:7.4.1 Unless multiple, nominal, or cut lengths are specified,random mill lengths shall be furnished.7.4.2 The permissible variations in length of multiple,nominal, or cut length rod shall be as prescribed in Table 1.Where rods are ordered in multiple lengths, a14-in. (6.35-
18、mm)length addition shall be permitted for each uncut multiplelength.7.5 Ends:7.5.1 Rods ordered to random or nominal lengths shall befurnished with either cropped or sawed ends.7.5.2 Rods ordered to cut lengths shall be furnished withsquare saw cut or machined ends.7.6 WeightFor the purposes of calc
19、ulating the weight ofthe material covered by this specification, a density of 0.306lb/in.5(8.48 g/cm5) shall be used.7.7 StraightnessThe maximum curvature (depth of chord)shall not exceed 0.050 in. multiplied by the length of the chordin feet (0.04 mm multiplied by the length in centimetres).8. Work
20、manship, Finish, and Appearance8.1 The material shall be uniform in quality and condition,smooth, and free of injurious defects.9. Sampling9.1 Lots for Chemical and Mechanical Testing:9.1.1 A lot for chemical analysis shall consist of one heat.9.1.2 A lot of bar for mechanical testing shall be defin
21、ed asthe material from one heat in the same condition and specifieddiameter.9.2 Sampling for Chemical Analysis:9.2.1 A representative sample shall be obtained from eachheat during pouring or subsequent processing.9.2.2 Product (check) analysis shall be wholly the respon-sibility of the purchaser.9.3
22、 Sampling for Mechanical TestingA representativesample shall be taken from each lot of finished material.10. Number of Tests and Retests10.1 Chemical AnalysisOne test per heat.10.2 Tension TestsOne test per lot.10.3 RetestsIf the specimen used in the mechanical test ofany lot fails to meet the speci
23、fied requirements, two additionalspecimens shall be taken from different sample pieces andtested. The results of the tests on both of these specimens shallmeet the specified requirements.11. Specimen Preparations11.1 Tension test specimens shall be taken from materialafter final heat treatment and t
24、ested in the direction offabrication.11.2 Tension test specimens shall be any of the standard orsubsized specimens described in Test Methods E8.11.3 In the event of disagreement, the referee specimenshall be the largest possible round specimen described in TestMethods E8.12. Test Methods12.1 The che
25、mical composition and mechanical propertiesof the material as enumerated in this specification shall bedetermined, in case of disagreement, in accordance with thefollowing ASTM standards:12.1.1 Chemical AnalysisTest Methods E1473. For ele-ments not covered by Test Methods E1473, the referee methodsh
26、all be as agreed upon between the manufacturer and thepurchaser. The composition of the remainder element shall bedetermined arithmetically by difference.12.1.2 Tension TestTest Methods E8.12.1.3 Method of SamplingPractice E55.TABLE 1 Permissible Variations in Length of RodsRandom mill lengths 2 to
27、12 ft (610 to 3660 mm) long with not more than25 weight % under 4 ft (1.22 m).Multiple lengths Furnished in multiples of a specified unit length,within the length limits indicated above. Foreach multiple, an allowance of14 in. (6.35 mm)shall be made for cutting, unless otherwise specified.At the man
28、ufacturers option, individual specifiedunit lengths may be furnished.Nominal lengths Specified nominal lengths having a range of not lessthan 2 ft (610 mm) with no short lengths allowed.Cut lengths A specified length to which all rods shall be cut witha permissible variation of +18 in. (3.17 mm) 0.T
29、ABLE 2 Chemical RequirementsElement Composition Limits, %Boron 0.015 maxCarbon 0.020.10Chromium 23.527.5Iron 1.05.0Manganese 0.11.5Molybdenum 4.06.0Nitrogen 0.030.12Nickel 7.011.0Phosphorous 0.030 maxSulfur 0.020 maxSilicon 0.051.00Tungsten 1.03.0Cobalt RemainderAASee 12.1.1.TABLE 3 Mechanical Prope
30、rty RequirementsTensile Strength, min, ksi (MPa) 130 (896)Yield Strength, min, ksi (MPa) 55 (379)Elongation in 2 in. (50.8 mm) or 4DA,min,% 15AD refers to the diameter of the tension specimen.B815 02 (2016)212.1.4 Determining Significant PlacesPractice E29.12.2 For purposes of determining compliance
31、 with thelimits in this specification, an observed or calculated valueshall be rounded in accordance with the rounding method ofPractice E29:Requirements Rounded Unit forObserved orCalculated ValueChemical composition hardnessand tolerance (when expressedin decimals)Nearest unit in the last right-ha
32、ndplace of figures of the specified limitTensile strength and yield strength Nearest 1000 psi (7 MPa)Elongation Nearest 1 %13. Inspection13.1 Inspection of the material shall be made as agreed uponbetween the manufacturer and the purchaser as part of thepurchase contract.14. Rejection and Rehearing1
33、4.1 Material evaluated by the purchaser that fails to con-form to the requirements of this specification may be rejected.Rejection should be reported to the producer or supplierpromptly and in writing. In case of dissatisfaction with theresults of the test, the producer or supplier may make claim fo
34、ra 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 specification, and that the testresults on representative s
35、amples meet specification require-ments. When specified in the purchase order or contract, areport of the test results shall be furnished.16. Product Marking16.1 Each piece of material12 in. (12.7 mm) and over indiameter shall be marked with this specification number,manufacturers identification, an
36、d size of the product.16.2 Each bundle or shipping container shall be markedwith this specification number; the size; gross, tare, and netweight; consignor and consignee address; contract or ordernumber; and such other information as may be defined in thecontract or order.17. Keywords17.1 rod; R3123
37、3APPENDIX(Nonmandatory Information)X1. HEAT TREATMENTX1.1 Proper heat treatment during or subsequent to fabrica-tion is necessary for optimum performance, and the manufac-turer shall be consulted for details.ASTM International takes no position respecting the validity of any patent rights asserted i
38、n 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 r
39、esponsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive car
40、eful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM Internation
41、al, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the
42、ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 4 Permissible Variations in Diameter and Out-of-Roundness of Finished RodsSpecified Diameter, in. (mm)Per
43、missible Variations, in. (mm)DiameterOut-of-Roundness, max+Hot-Finished, Annealed, and Descaled Rods316 to716 (4.7611.11), incl 0.012 (0.30) 0.012 (0.30) 0.018 (0.46)Over716 to58 (11.1115.87), incl 0.014 (0.36) 0.014 (0.36) 0.020 (0.51)Over58 to34 (15.8719.05), excl 0.016 (0.41) 0.016 (0.41) 0.024 (0.61)Hot-Finished, Annealed, and Ground or Turned Rods34 to 312 (19.0588.9), incl 0.010 (0.25) 0 0.008 (0.20)B815 02 (2016)3
