1、Designation: A 581/A 581M 95b (Reapproved 2004)Standard Specification forFree-Machining Stainless Steel Wire and Wire Rods1This standard is issued under the fixed designation A 581/A 581M; the number immediately following the designation indicates the yearof original adoption or, in the case of revi
2、sion, the year of last revision. A number in parentheses indicates the year of last reapproval.A superscript epsilon (e) indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1. Scope1.1 This specification
3、 covers cold-finished wire and hot-finished wire rods in coils. Wire rods are a semi-finishedproduct primarily for the manufacture of wire. Wire includesrounds, squares, hexagons, and special shapes in the morecommonly used types of stainless free-machining steels de-signed especially for optimum ma
4、chinability and for generalcorrosion and high-temperature service.NOTE 1For wire other than those of the free-machining types, seeSpecification A 580/A 580M.1.2 The values stated in either inch-pound units or SI(metric) units are to be regarded separately as standards; withinthe text and tables, the
5、 SI units are shown in brackets. Thevalues stated in each system are not exact equivalents; there-fore, each system must be used independently of the other.Combining values from the two systems may result in noncon-formance with the specification.1.3 Unless the order specifies the applicable “M” spe
6、cifica-tion designation, the material shall be furnished to the inch-pound units.2. Referenced Documents2.1 ASTM Standards:2A 555/A 555M Specification for General Requirements forStainless Steel Wire and Wire RodsA 580/A 580M Specification for Stainless Steel WireA 751 Test Methods, Practices, and T
7、erminology forChemical Analysis of Steel ProductsE 527 Practice for Numbering Metals and Alloys (UNS)2.2 SAE Standard:3J 1086 Practice for Numbering Metals and Alloys (UNS)3. Ordering Information3.1 It is the responsibility of the purchaser to specify allrequirements that are necessary for material
8、ordered under thisspecification. Such requirements may include, but are notlimited to, the following:3.1.1 Quantity (weight),3.1.2 Name of material (stainless steel),3.1.3 Condition (see Section 5),3.1.4 Finish (see Section 7),3.1.5 Applicable dimensions including size, thickness,width, and length o
9、r coil diameter (inside or outside diameter),and coil weights,3.1.6 Cross section (round, square, etc.),3.1.7 Type or UNS designation (Table 1),3.1.8 ASTM designation (Specification A 581/A 581M) anddate of issue, and3.1.9 Exceptions to the specification or special require-ments.NOTE 2A typical orde
10、ring description is as follows: 5000 lb 2000 kgstainless steel wire, annealed,14 in. 6.5 mm round, coils, Type 303,ASTM Specification A 581/A 581M dated . End use: machined valveparts.4. Chemical Composition4.1 The steel shall conform to the requirements as tochemical composition specified in Table
11、1.4.2 Methods and practices relating to chemical analysisrequired by this specification shall be in accordance with TestMethods, Practices, and Terminology A 751.5. Condition5.1 Cold-finished wire may be furnished in one of theconditions listed in Table 2.5.2 Wire rods may be furnished in the as-hot
12、-rolled oras-hot-rolled and annealed condition.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 Sept. 1, 2004. Pu
13、blished September 2004. Originallyapproved in 1967. Last previous edition approved in 2000 as A 581/A 581M 95b(2000).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
14、 the standards Document Summary page onthe ASTM website.3Available from Society of Automotive Engineers (SAE), 400 CommonwealthDr., Warrendale, PA 15096-0001.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.6. Mechanical Requirements6
15、.1 Wire products shall conform to the mechanical testrequirements specified in Table 3.6.2 Wire rods shall conform to the annealed mechanical testrequirements specified in Table 3.7. Finish7.1 Wire rods are furnished with a hot rolled or a hot rolledand cleaned finish.7.2 Wire in the cold-finished c
16、ondition, is generally fur-nished with a cold-drawn finish.8. General Requirements for Delivery8.1 In addition to the requirements of this specification, allrequirements of the current edition of Specification A 555/A 555M shall apply. Failure to comply with the generalrequirements of Specification
17、A 555/A 555M constitutes non-conformance with this specification.9. Keywords9.1 free-machining; free-machining wire; stainless steelTABLE 1 Chemical RequirementsUNSDesig-nationATypeComposition, %Carbon,maxManga-neseBPhos-phorus,maxSulfurBSilicon,maxChromium Nickel Other ElementsAUSTENITICS20300 XM-1
18、 0.08 5.06.5 0.04 0.180.35 1.00 16.018.0 5.06.5 Cu 1.752.25S30300 303 0.15 2.00 0.20 0.15 min 1.00 17.019.0 8.010.0 . . .0.20S30310 XM-5 0.15 2.54.5 0.20 0.25 min 1.00 17.019.0 7.010.0 . . .S30323 303 Se 0.15 2.00 0.20 0.06 1.00 17.019.0 8.010.0 Se 0.15 minS30345 XM-2 0.15 2.00 0.05 0.110.16 1.00 17
19、.019.0 8.010.0 Mo 0.400.60Al 0.601.00MARTENSITICS41600 416 0.15 1.25 0.06 0.15 min 1.00 12.014.0 . . . . . .S41610 XM-6 0.15 1.502.50 0.06 0.15 min 1.00 12.014.0 . . . . . .S41623 416 Se 0.15 1.25 0.06 0.06 1.00 12.014.0 . . . Se 0.15 minFERRITICS18200 XM-34 0.08 2.50 0.04 0.15 min 1.00 17.519.5 . .
20、 . Mo 1.502.50S18235 . . . 0.025 0.50 0.030 0.150.35 1.00 17.518.5 1.00 Mo 2.002.50Ti 0.301.00N 0.025 maxC+N 0.035 maxS41603 . . . 0.08 1.25 0.06 0.15 min 1.00 12.0-14.0 . . . . . .S43020 430 F 0.12 1.25 0.06 0.15 min 1.00 16.018.0 . . . . . .S43023 430 F Se 0.12 1.25 0.06 0.06 1.00 16.018.0 . . . S
21、e 0.15 minANew designation established in accordance with Practice E 527 and SAE J 1086, Practice for Numbering Metals and Alloys (UNS).BMaximum unless otherwise noted.TABLE 2 ConditionUNSDesignationTypeCondition A(Annealed)ConditionB (ColdWorked)ConditionT (Inter-mediateTemper)ConditionH (HardTempe
22、r)AUSTENITICS20300 XM-1 A B . . . . . .S30300 303 A B . . . . . .S30310 XM-5 A B . . . . . .S30323 303 Se A B . . . . . .S30345 XM-2 A B . . . . . .MARTENSITICS41600 416 A . . . T HS14160 XM-6 A . . . T HS41623 416 Se A . . . T HFERRITICS18200 XM-34 A . . . . . . . . .S18235 . . . A B . . . . . .S41
23、603 . . . A . . . . . . . . .S43020 430 F A . . . . . . . . .S43023 430 F Se A . . . . . . . . .TABLE 3 Mechanical Test RequirementsTypeCondition(see Section5)Tensile Strengthksi MPaAll (Except S 18235) A 85 to 125 585 to 860S18235 AB60 to 9080 to 120415 to 620550 to 830303, 303Se, XM-1, XM-2,XM-3,
24、and XM-5BA115 to 145 795 to 1000416, 416Se, and XM-6 T 115 to 145 790 to 1000416, 416Se, and XM-6 H 140 to 175 965 to1210ACondition B applies only to wire annealed and cold worked to produce highstrength in chromium-nickel types not hardenable by heat treatment.A 581/A 581M 95b (2004)2APPENDIX(Nonma
25、ndatory Information)X1. CROSS REFERENCEX1.1 This table is intended to assist the user whenSpecification A 581/A 581M is referenced in a governmentprocurement. It shows the types of steels in SpecificationA 581/A 581M replacing the steels formerly specified in MIL-W-52263C(MR).TABLE X1.1 Cross Refere
26、nceUNS DesignationAMIL-W-52263C(MR)Specification A 581,TypeS20300 203 EZ XM-1S30300 303 303S30310 303 plus X XM-5S30323 303 Se 303 SeS30345 303 Ma XM-2S41600 416 416S41610 416 plus X XM-16S41623 416 Se 416 SeS43020 430 F 430 FS43023 430 Se 430 F SeANew designation established in accordance with Prac
27、tice E 527 and SAE J 1086, Practice for Numbering Metals and Alloys (UNS).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
28、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
29、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 r
30、eceived 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 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 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).A 581/A 581M 95b (2004)3
