1、Designation: A 887 89 (Reapproved 2009)Standard Specification forBorated Stainless Steel Plate, Sheet, and Strip for NuclearApplication1This standard is issued under the fixed designation A 887; the number immediately following the designation indicates the year oforiginal adoption or, in the case o
2、f 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.1. Scope1.1 This specification covers chromium-nickel stainlesssteel plate, sheet, and strip, modified by
3、the addition of naturalor enriched boron, for nuclear application.1.2 Borated stainless steels covered by this specification,because of their particular alloy content and specialized prop-erties, may require special care in their fabrication and weld-ing. Specific procedures are of fundamental impor
4、tance, and itis presupposed that all parameters will be in accordance withapproved methods capable of producing the desired propertiesin the finished fabrication.1.3 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathematicalconversions to SI
5、 units that are provided for information onlyand are not considered standard.2. Referenced Documents2.1 ASTM Standards:2A 370 Test Methods and Definitions for Mechanical Testingof Steel ProductsA 480/A 480M Specification for General Requirements forFlat-Rolled Stainless and Heat-Resisting Steel Plat
6、e,Sheet, and StripA 751 Test Methods, Practices, and Terminology forChemical Analysis of Steel Products3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 platematerial316 in. (4.8 mm) and over in thicknessand over 10 in. (250 mm) in width.3.1.2 sheetmaterial under316 in. (5.0 mm)
7、 in thicknessand 24 in. (600 mm) and over in width.3.1.3 stripmaterial under316 in. (5.0 mm) in thicknessand under 24 in. (600 mm) in width.4. Ordering Information4.1 Orders for material under this specification shall includethe information specified in the Ordering Information sectionof Specificati
8、on A 480/A 480M.5. Process5.1 If a specific type of melting is required by the purchaser,it shall be stated on the purchase order.5.2 When specified on the purchase order, or when aspecific type of melting has been specified on the purchaseorder, the material manufacturer shall indicate on the test
9、reportthe type of melting used to produce the material.6. Heat Treatment6.1 The austenitic chromium-nickel steels shall be solution-annealed to meet the mechanical property requirements of thisspecification. Solution-annealing shall consist of heating thematerial to a temperature of 1900F (1040C) mi
10、nimum for anappropriate time followed by water quenching or rapidlycooling by other means.7. Material Test Report7.1 A report of the results of all tests required by thisspecification and the type of melting used shall be supplied tothe purchaser.8. Chemical Composition8.1 The chemical analysis of r
11、epresentative material shall beperformed, as agreed upon between the purchaser and supplier,to determine the percentages of the elements identified in Table1. The chemical composition thus determined shall be reportedto the purchaser, or his representative, and shall conform to therequirements speci
12、fied in Table 1.8.2 When a product (check or verification) analysis isperformed, the chemical composition thus determined mayvary from the specified limits by the amounts shown in Table1, Product Analysis Tolerances, of Specification A 480/A 480M.1This specification is under the jurisdiction of ASTM
13、 Committee A01 on Steel,Stainless Steel and Related Alloys and is the direct responsibility of SubcommitteeA01.17 on Flat-Rolled and Wrought Stainless Steel.Current edition approved May 1, 2009. Published June 2009. Originallyapproved in 1988. Last previous edition approved in 2004 as A 887 89 (2004
14、).2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Bo
15、x C700, West Conshohocken, PA 19428-2959, United States.8.3 Methods and practices relating to chemical analysisrequired by this specification shall be in accordance with TestMethods, Practices, and Terminology A 751.8.4 Boron determination not covered in Test Methods,Practices, and Terminology A 751
16、 shall be made as agreedupon between the purchaser and the supplier.9. Mechanical Properties9.1 Tensile PropertiesThe material shall conform to thetensile property requirements specified in Table 2.9.2 HardnessThe material shall conform to the hardnessrequirements as specified in Table 2.9.3 GradeTh
17、e grade of the material is defined by theuniformity of the dispersion of the boron within the melt.Grade A corresponds to the near-optimal dispersion, whileGrade B corresponds to a less-than-optimal dispersion of theboron. Conventional wrought metallurgical practice conformsto Grade B properties. Th
18、e quality of the boron dispersion ismeasured indirectly through the ductility requirements, asspecified in Table 2.10. Special Tests10.1 If any special tests are required that are pertinent to theintended application of the material ordered, they shall beagreed upon between the supplier and the purc
19、haser.10.2 Charpy V-notch impact testing is not required unless itis specified on the purchase order. If so specified, impacttesting shall be performed in accordance with Test Methodsand Definitions A 370. The impact test results thus determinedshall be reported to the purchaser, or his representati
20、ve, andshall conform to the requirements specified in Table 3.Ifsubsize impact test specimens are used, the applicable require-ments shall be agreed upon between the purchaser and thesupplier.11. Dimensions and Permissible Variations11.1 Unless otherwise specified in the purchase order, ma-terial sh
21、all conform to the permissible tolerances shown inSpecification A 480/A 480M.11.2 Sheet, Strip, and PlateMaterial with No. 1 finishmay be ground to remove surface imperfections, provided suchgrinding does not reduce the thickness or width at any pointbeyond the permissible variations in dimensions.1
22、2. Workmanship, Finish, and Appearance12.1 The material shall be uniform quality consistent withgood manufacturing and inspection practices. The steel shallhave no imperfections of a nature or degree, for the type andquality ordered, that will adversely affect the stamping, form-ing, machining, or f
23、abrication of finished parts.13. General Requirements for Delivery13.1 Material furnished under this specification shall con-form to the applicable requirements of the current edition ofSpecification A 480/A 480M. In case of conflict, the require-ments of this specification shall prevail.TABLE 1 Che
24、mical Requirements CompositionAUNSDesignationType Carbon Manganese Phosphorous Sulfur Silicon Chromium Nickel Boron OtherElementsBS30460 304B 0.08 2.00 0.045 0.030 0.75 18.0020.00 12.0015.00 0.200.29 N 0.10 maxS30461 304B1 0.08 2.00 0.045 0.030 0.75 18.0020.00 12.0015.00 0.300.49 N 0.10 maxS30462 30
25、4B2 0.08 2.00 0.045 0.030 0.75 18.0020.00 12.0015.00 0.500.74 N 0.10 maxS30463 304B3 0.08 2.00 0.045 0.030 0.75 18.0020.00 12.0015.00 0.750.99 N 0.10 maxS30464 304B4 0.08 2.00 0.045 0.030 0.75 18.0020.00 12.0015.00 1.001.24 N 0.10 maxS30465 304B5 0.08 2.00 0.045 0.030 0.75 18.0020.00 12.0015.00 1.25
26、1.49 N 0.10 maxS30466 304B6 0.08 2.00 0.045 0.030 0.75 18.0020.00 12.0015.00 1.501.74 N 0.10 maxS30467 304B7 0.08 2.00 0.045 0.030 0.75 18.0020.00 12.0015.00 1.752.25 N 0.10 maxAMaximum, unless range or minimum is indicated.BCobalt concentration shall be limited to 0.2 max, unless a lower concentrat
27、ion is agreed upon between the purchaser and the supplier.TABLE 2 Mechanical Test RequirementsUNSDesignationType Grade Tensile Strength, min Yield Strength, min Elongation in 2in.or50mm,min, %Hardness, maxksi MPa ksi MPa Brinell Rockwell BS30460 304B A 75 515 30 205 40.0 201 92B 75 515 30 205 40.0 2
28、01 92S30461 304B1 A 75 515 30 205 40.0 201 92B 75 515 30 205 35.0 201 92S30462 304B2 A 75 515 30 205 35.0 201 92B 75 515 30 205 27.0 201 92S30463 304B3 A 75 515 30 205 31.0 201 92B 75 515 30 205 19.0 201 92S30464 304B4 A 75 515 30 205 27.0 217 95B 75 515 30 205 16.0 217 95S30465 304B5 A 75 515 30 20
29、5 24.0 217 95B 75 515 30 205 13.0 217 95S30466 304B6 A 75 515 30 205 20.0 241 100B 75 515 30 205 9.0 241 100S30467 304B7 A 75 515 30 205 17.0 241 100B 75 515 30 205 6.0 241 100A 887 89 (2009)214. Number of Tests14.1 In the case of sheet or strip produced in coil form, twoor more hardness tests (one
30、from each end of the coil); oneimpact test, when required; and one or more tension tests shallbe made on specimens taken from each coil. If the hardnessdifference between the two ends of the coil exceeds 5 HRB, orequivalent, tensile properties must be determined on both ends.14.2 In the case of shee
31、t, strip, or plate produced in cutlengths, one tension test; one impact test, when required; andone or more hardness tests shall be made on each 100 or lesspieces of the same heat and nominal thickness rolled separatelyor continuously and heat treated within the same operatingperiod, either as a lot
32、 or continuously.NOTE 1The term “continuously,” as applied to heat treatment, ismeant to describe a heat-treating operation in which one cut length followsanother through the furnace. Interspersement of different melts is permis-sible if they are of approximately the same nominal thickness and are h
33、eattreated in the same operating period and under the same conditions (timeand temperature), provided that each heat is tested.15. Specimen Preparation15.1 Tension-test specimens shall be taken from finishedmaterial and shall be selected either in the longitudinal ortransverse direction. The tension
34、-test specimen shall conformto the appropriate Sections, (Plate-Type Specimen, Sheet-TypeSpecimen, and Round Specimens) of Test Methods and Defi-nitions A 370.NOTE 2For plate material up to and including34 in. (19.05 mm) thick,the sheet-type tension specimen described in the Sheet-Type Specimensecti
35、on (Figure relating to rectangular tension test specimens), of TestMethods and Definitions A 370 is also permitted.15.2 Notched-bar impact test specimens shall be taken fromfinished material. Full-size (10 by 10 mm) Type A specimensshall be used when the material thickness permits. When thematerial
36、thickness is insufficient to obtain full-size specimens,subsize specimens shall be used. The subsize specimens mayhave a width of full material thickness or may be reduced inthickness to provide the largest possible standard subsizespecimen listed in Test Methods and Definitions A 370. Alter-native
37、specimens may be used, in place of the subsizespecimens, as agreed upon between the purchaser and thesupplier.15.3 Hardness tests may be made on the grip ends of thetensions test specimens before they are subjected to the tensiontest.16. Test Methods16.1 The properties enumerated in this specificati
38、on shall bedetermined in accordance with methods as specified in Speci-fication A 480/A 480M.16.2 Retests may be made in accordance with the provisionsof the section on General Precautions of Test Methods andDefinitions A 370.17. Retreatment17.1 If any specimens selected to represent any heat fail t
39、omeet any of the test requirements, the material represented bysuch specimens may be reheat-treated and resubmitted for test.18. Inspection18.1 In addition to inspection performed by the supplier,inspection of the material by the purchasers representative atthe producing plant shall be made as agree
40、d upon between thepurchaser and supplier as part of the purchase order.19. Rejection and Rehearing19.1 Samples tested by the purchaser in accordance withthis specification that represent rejected material shall beretained for 3 weeks from the date of the notification to theseller of the rejection. I
41、n case of dissatisfaction with the resultsof the tests, the seller may make claim for a rehearing withinthat time.20. Certification20.1 The producers certification that the material wasmanufactured and tested in accordance with this specification,together with the report of the test results, shall b
42、e furnished atthe time of shipment.21. Product Marking21.1 Each sheet, strip, or plate shall be marked on one face,in the locations indicated below with the designation numberand its suffix, type, test identification number, and the name ormark of the manufacturer. The characters shall be of such si
43、zeas to be clearly legible. The marking shall be sufficiently stableto withstand normal handling. Unless otherwise specified bythe purchaser, the marking, at the producers option, may bedone with: (1) marking fluid (if a specific maximum impuritylimit of designated elements in the marking fluid is r
44、equired bythe purchaser, it shall be so stated on the purchase order), (2)low-stress blunt-nosed-continuous or low-stress blunt-nosed-interrupted-dot die stamp, (3), a vibratory tool with a minimumtip radius of 0.005 in. (0.1 mm), or (4) electrochemical etching.21.1.1 Flat sheet, strip in cut length
45、s, and plate shall bemarked in two places near the ends.21.1.2 Sheet and strip in coils shall be marked near theoutside end of the coil. The inside of the coil shall also beTABLE 3 Impact Test RequirementsType Grade Charpy V-Notch Energy,ft-lb (J), min304B A 65 (88)B 40 (54)304B1 A 60 (81)B 35 (47)3
46、04B2 A 48 (65)B 16 (22)304B3 A 38 (52)B 10 (14)304B4 A 30 (41)B .304B5 A 23 (31)B .304B6 A 16 (22)B .304B7 A 10 (14)B .A 887 89 (2009)3marked or shall have a tag or label attached and marked withthe information of 21.1.21.1.3 Material less than14 in. (6.4 mm) in thickness shallnot be marked with die
47、 stamps.21.2 The manufacturers test identification number shall belegibly stamped on each test specimen, if to be shipped to thecustomer.21.3 Marking for identification for U.S. Government pro-curement shall be in accordance with Specification A 480/A 480M.ASTM International takes no position respec
48、ting 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 sta
49、ndard 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 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 shouldmake your views known to th
