1、Designation: A 895 89 (Reapproved 2009)Standard Specification forFree-Machining Stainless Steel Plate, Sheet, and Strip1This standard is issued under the fixed designation A 895; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the
2、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 hot-finished or cold-finishedplate, sheet, and strip in the more commonly used types
3、 ofstainless free machining steels designed especially for opti-mum machinability and for general corrosion and high tem-perature service. Stainless and heat-resisting plate, sheet, andstrip, other than free-machining types, are covered in separatespecifications.1.2 The values stated in inch-pound u
4、nits are to be regardedas standard. The values given in parentheses are mathematicalconversions to SI 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
5、/A 480M Specification for General Requirements forFlat-Rolled Stainless and Heat-Resisting Steel Plate,Sheet, and StripA 751 Test Methods, Practices, and Terminology forChemical Analysis of Steel ProductsE 527 Practice for Numbering Metals and Alloys in theUnified Numbering System (UNS)2.2 SAE Stand
6、ard:SAE J 1086 Recommended Practice for Numbering Metalsand Alloys3. 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) in thicknessand 24 in. (600 mm) and
7、over in width.3.1.3 stripmaterial under316 in. (5.0 mm) in thicknessand under 24 in. (600 mm) in width.4. Process4.1 The steel shall be made by one or more of the followingprocesses: electric-arc, electric-induction, or other suitablecommercial processes.4.2 Plate, sheet, and strip may be furnished
8、in one of theconditions listed in Table 1.5. Ordering Information5.1 Orders for material under this specification shouldinclude the following information:5.1.1 Quantity (weight or number of pieces),5.1.2 Type or UNS designation (Table 2),5.1.3 Form (plate, sheet, or strip),5.1.4 Condition (Table 2),
9、5.1.5 Finish (9.2),5.1.6 Dimensions (thickness, width, and length),5.1.7 Edge, strip only (see Specification A 480/A 480M),5.1.8 ASTM designation and date of issue,5.1.9 Additions to specification or special requirements,5.1.10 Preparation for delivery, and5.1.11 Marking requirements.6. Chemical Com
10、position6.1 The chemical composition shall conform to the require-ments specified in Table 2.6.2 Methods and practices relating to chemical analysisrequired by this specification shall be in accordance with TestMethods, Practices, and Terminology A 751.7. Hardness Requirement7.1 The material shall c
11、onform to the hardness requirementsas specified in Table 3.1This specification is under the jurisdiction of ASTM 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,
12、 2009. Published June 2009. Originallyapproved in 1989. Last previous edition approved in 2004 as A 895 89 (2004).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 th
13、e standards Document Summary page onthe ASTM website.TABLE 1 ConditionTypeCondition A(Annealed)Condition T(IntermediateTemper)Condition H (HardTemper)303 A . .303Se A . . . . . .416 A T H416Se A T H420F A . . . . . .420FSe A T . . .430F A . . . . . .430FSe A . . . . . .1Copyright ASTM International,
14、 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.7.2 The hardness test shall be determined in accordancewith Test Methods and Definitions A 370.8. General Requirements for Delivery8.1 Material furnished under this specification shall con-form to the applicable req
15、uirements of the current edition ofSpecification A 480/A 480M. In case of conflict, the require-ments of this specification shall prevail.9. Workmanship, Finish, and Appearance9.1 The material shall be of uniform quality consistent withgood manufacturing and inspection practices. The steel qualitysh
16、all be satisfactory for the production or fabrication offinished parts.NOTE 1Free-machining stainless steels may not equal the quality ofnon-free-machining stainless steels because of the inclusions present toimpart free-machining.9.2 Plates and sheets may be ground to remove surfacedefects, provide
17、d such grinding does not reduce the thicknessor width at any point beyond the allowable dimensionaltolerances. An iron-free abrasive wheel shall be used for suchgrinding and shall be operated at a speed ample to ensure thatdefective areas are cleanly cut out.10. Product Marking10.1 Each sheet, strip
18、, or plate shall be marked on one face,in the locations indicated below with the designation numberand its suffix, type, heat number, and the name or mark of themanufacturer. The characters shall be of such size as to beclearly legible. The marking shall be sufficiently stable towithstand normal han
19、dling. Unless otherwise specified by thepurchaser, the marking, at the producers option, may be donewith: (1) marking fluid, (2) low-stress blunt-nosed-continuousor low-stress blunt-nosed-interrupted-dot die stamp, (3) avibratory tool with a minimum tip radius of 0.005 in. (0.01mm), or (4) electroch
20、emical etching.10.1.1 Flat sheet, strip in cut lengths, and plate shall bemarked in two places near the ends or may be continuously linemarked along one edge.10.1.2 Sheet and strip in coils shall be marked near theoutside end of the coil. The inside of the coil shall also bemarked or shall have a ta
21、g or label attached and marked withthe information in 10.1. Alternatively, the coils may becontinuously line marked.10.1.3 Material less than14 in. (6.4 mm) in thickness shallnot be marked with die stamps.10.2 Marking for identification for U.S. Government pro-curement shall be in accordance with Sp
22、ecificationA 480/A 480M.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 the riskof infringe
23、ment 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 this standard o
24、r 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 k
25、nown 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 obtained by contacting A
26、STM 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 2 Chemical RequirementsUNSDesignationAChemical Composition, %Type CarbonBManganese,maxPhosphorus,maxSulfurBSilicon, max Chromium Nickel Other ElementsS
27、30300 303 0.15 2.00 0.20 0.15 min 1.00 17.0019.00 8.0010.00 . . .S30323 303Se 0.15 2.00 0.20 0.06 1.00 17.0019.00 8.0010.00 Se 0.15 minS41600 416 0.15 1.25 0.06 0.15 min 1.00 12.0014.00 . . . . . .S41623 416Se 0.15 1.25 0.06 0.06 1.00 12.0014.00 . . . Se 0.15 minS42020 420F 0.300.40 1.25 0.06 0.15 m
28、in 1.00 12.0014.00 0.50CCu 0.60 maxCS42023 420FSe 0.200.40 1.25 0.06 0.06 1.00 12.0014.00 0.50CCu 0.60 maxCSe 0.15 minS43020 430F 0.12 1.25 0.06 0.15 min 1.00 16.0018.00 . . . . . .S43023 430FSe 0.12 1.25 0.06 0.06 1.00 16.0018.00 . . . Se 0.15 minANew designation established in accordance with Prac
29、tice E 527 and SAE J 1086, Practice for Numbering Metals and Alloys (UNS).BMaximum unless otherwise noted.CAt manufacturers option, reported only when intentionally added.TABLE 3 Mechanical Test RequirementsTypes Condition Hardness (HBN)303, 303Se A 202 maxAll (except 303, 303Se) A 262 max416, 416Se and 420FSe T 248 to 302416 and 416Se H 293 to 352A 895 89 (2009)2
