1、Designation: B 818 03Standard Specification forCobalt-Chromium-Nickel-Molybdenum-Tungsten Alloy(UNS R31233) Plate, Sheet and Strip1This standard is issued under the fixed designation B 818; the number immediately following the designation indicates the year oforiginal adoption or, in the case of rev
2、ision, 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 cobalt-chromium-nickel-molybdenum-tungsten alloy UNS R31233 in the form
3、of rolledplate, sheet, and strip for wear applications and generalcorrosion service.1.2 The following products are covered under this specifi-cation:1.2.1 Sheet and StripHot or cold rolled, annealed anddescaled unless solution-annealing is performed in an atmo-sphere yielding a bright finish.1.2.2 P
4、lateHot rolled, solution-annealed, and descaled.1.3 The values stated in inch-pound units are to be regardedas the standard. The values given in parentheses are forinformation only.1.4 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresp
5、onsibility 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 manufacturer, to establish appropriate safety andhealth practices, and determine the applicability of regul
6、atorylimitations prior to use.2. Referenced Documents2.1 ASTM Standards:B 906 Specification for General Requirements for Flat-Rolled Nickel and Nickel Alloys Plate, Sheet, and Strip23. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 platematerial316 in. (4.76 mm) and over in thic
7、k-ness.3.1.2 sheet and stripmaterial under316 in. (4.76 mm) inthickness.4. General Requirements4.1 Material furnished under this specification shall con-form to the applicable requirements of Specification B 906unless otherwise provided herein.5. Ordering Information5.1 It is the responsibility of t
8、he purchaser to specify allrequirements that are necessary for material ordered under thisspecification. Examples of such requirements include, but arenot limited to, the following:5.1.1 Alloy.5.1.2 DimensionsThickness (in decimals of an inch),width, and length (inch or fraction of an inch).5.1.3 Ce
9、rtificationState if a report of test results is re-quired (see Specification B 906, Section 21).5.1.4 Optional RequirementPlate; state how plate is to becut (see Specification B 906, Table A2.3).5.1.5 Purchase InspectionState which tests or inspectionsare to be witnessed (see Specification B 906, Se
10、ction 18).5.1.6 Samples, for Product (Check) AnalysisStatewhether samples should be furnished (see Specification B 906,Section 7.2.2).6. Chemical Composition6.1 The material shall conform to the requirements as tochemical composition prescribed in Table 1.6.2 If a product (check) analysis is made by
11、 the purchaser,the material shall conform to the requirements specified inTable 1 and Specification B 906.7. Mechanical Properties and Other Requirements7.1 Tensile PropertiesThe material shall conform to theroom temperature tensile properties prescribed in Table 2.8. Dimensions, Mass, and Permissib
12、le Variations8.1 Thickness:8.1.1 Sheet and StripThe thickness shall be measuredwith the micrometer spindle38 in. (9.525 mm) or more fromany edge for material 1 in. (25.4 mm) or over in width and atany place on material under 1 in. in width.1This specification is under the jurisdiction of ASTM Commit
13、tee 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 10, 2003. Published July 2003. Originallyapproved in 1991. Last previous edition approved in 1998 as B 818 - 98a.2Annual Book of A
14、STM Standards, Vol 02.04.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.8.2 Length:8.2.1 Sheet and StripSheet and strip may be ordered to cutlengths, in which case a variation of18 in. (3.175 mm) over thespecified length shall be pe
15、rmitted, with a “0” minus tolerance.8.3 Straightness:8.3.1 The edgewise curvature (depth of chord) of flat sheet,strip, and plate shall not exceed the product of 0.05 in.multiplied by the length in feet (0.04 mm multiplied by thelength in centimetres).8.3.2 Straightness for coiled strip is subject t
16、o agreementbetween the manufacturer and the purchaser.8.4 Squareness (Sheet)For sheets of all thicknesses andwidths of 6 in. (152.4 mm) or more, the angle between adjacentsides shall be 90 6 0.15 (116 in. in 24 in. or 2.6 mm/m).8.5 FlatnessPlate, sheet, and strip shall be commerciallyflat.8.6 Edges:
17、8.6.1 Plates shall have sheared, abrasive cut, or plasmatorch-cut edges as specified.8.6.2 Sheet and strip shall have sheared or slit edges.9. Product Marking9.1 Each plate, sheet, or strip shall be marked on one facewith the specification number, heat number, manufacturersidentification, and size.
18、The markings shall have no deleteriouseffect on the material or its performance and shall be suffi-ciently stable to withstand normal handling.9.2 Each bundle or shipping container shall be marked withthis specification number; the size; gross, tare, and net weight;consignor and consignee address; c
19、ontract or order number;and such other information as may be defined in the contract ororder.10. Keywords10.1 plate; sheet; strip; R31233APPENDIX(Nonmandatory Information)X1. HEAT TREATMENTX1.1 Proper heat treatment during or subsequent to fabri-cation is necessary for optimum performance and the ma
20、nu-facturer shall be consulted for details.ASTM 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
21、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
22、 of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful 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 shou
23、ldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 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 obtai
24、ned by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).TABLE 1 Chemical RequirementsElement Composition Limits, %Boron 0.015 maxCarbon 0.020.10Chromium 23.527.5Iron 1.05.0Manganese 0.11.5Molybd
25、enum 4.06.0Nitrogen 0.030.12Nickel 7.011.0Phosphorous 0.030 maxSulfur 0.020 maxSilicon 0.051.00Tungsten 1.03.0Cobalt RemainderAASee Specification B 906.TABLE 2 Mechanical Property RequirementsTensile Strength, min, ksi (MPa) 130 (896)Yield Strength, min, ksi (MPa) 55 (379)Elongation in 2 in. (50.8 mm) or 4DAmin % 15AD refers to the diameter of the tension specimen.B818032
