1、Designation: A 606/A 606M 09Standard Specification forSteel, Sheet and Strip, High-Strength, Low-Alloy, Hot-Rolledand Cold-Rolled, with Improved Atmospheric CorrosionResistance1This standard is issued under the fixed designationA 606/A 606M; the number immediately following the designation indicates
2、 the yearof original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.A superscript epsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the
3、Department of Defense.1. Scope*1.1 This specification covers high-strength, low-alloy, hot-and cold-rolled sheet and strip in cut lengths or coils, intendedfor use in structural and miscellaneous purposes, where savingsin weight or added durability are important. These steels haveenhanced atmospheri
4、c corrosion resistance and are supplied intwo types: Type 2 contains 0.20 % minimum copper based oncast or heat analysis (0.18 % minimum Cu for product check).Type 4 contains additional alloying elements and provides alevel of corrosion resistance substantially better than that ofcarbon steels with
5、or without copper addition (Note 1). Whenproperly exposed to the atmosphere, Type 4 steel can be usedbare (unpainted) for many applications.NOTE 1For methods of establishing the atmospheric corrosion resis-tance of low-alloy steels, see Guide G 101.1.2 The values stated in either SI units or inch-po
6、und unitsare to be regarded separately as standard. The values stated ineach system may not be exact equivalents; therefore, eachsystem shall be used independently of the other. Combiningvalues from the two systems may result in non-conformancewith the standard.2. Referenced Documents2.1 ASTM Standa
7、rds:2A 109/A 109M Specification for Steel, Strip, Carbon (0.25Maximum Percent), Cold-RolledA 568/A 568M Specification for Steel, Sheet, Carbon,Structural, and High-Strength, Low-Alloy, Hot-Rolled andCold-Rolled, General Requirements forA 749/A 749M Specification for Steel, Strip, Carbon andHigh-Stre
8、ngth, Low-Alloy, Hot-Rolled, General Require-ments forG 101 Guide for Estimating the Atmospheric CorrosionResistance of Low-Alloy Steels3. General Requirements for Delivery 3.1 Material furnished under this specification shall con-form to the applicable requirements of the current edition ofSpecific
9、ation A 568/A 568M and the dimensional tolerancetables of Specification A 109/A 109M, unless otherwise pro-vided herein.4. Ordering Information4.1 Orders for material under this specification shall includethe following information, as required, to describe adequatelythe desired material:4.1.1 ASTM s
10、pecification number and date of issue, andtype,4.1.2 Name of material (high-strength low-alloy hot-rolledsheet or strip or high-strength low-alloy cold-rolled sheet orstrip),4.1.3 Condition (specify oiled or dry, as required),4.1.4 Edges (must be specified for hot-rolled sheet or strip)(see 8.1),4.1
11、.5 FinishCold-rolled only (indicate exposed (E) orunexposed (U). Matte (dull) finish will be supplied unlessotherwise specified), and4.1.6 Dimensions (thickness, width, and whether cut lengthsor coils).4.1.6.1 As agreed upon between the purchaser and theproducer, material ordered to this specificati
12、on will be suppliedto meet the appropriate standard or restricted thickness toler-ance table shown in Specification A 568/A 568M.NOTE 2Not all producers are capable of meeting all of the limitationsof the thickness tolerance tables in Specification A 568/A 568M. Thepurchaser should contact the produ
13、cer regarding possible limitations priorto placing an order.1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is the direct responsibility of SubcommitteeA01.19 on Steel Sheet and Strip.Current edition approved April 1, 2009. Publishe
14、d April 2009. Originallyapproved in 1970. Last previous edition approved in 2004 as A 606 04.2For 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
15、Summary page onthe ASTM website.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.4.1.7 Coil size (must include inside diameter, outside diam-eter, and maximum weight),4
16、.1.8 Application (show part identification and description),4.1.9 Special requirements (if required), and4.1.10 Cast or heat (formerly ladle) analysis and mechanicalproperties report (if required) (see 10.1).NOTE 3A typical ordering description is as follows: “ASTMA 606XX, Type 4 high-strength low-a
17、lloy hot-rolled sheet, dry, mill edge0.106 by 48 by 96 in. for truck frame side members.” Or, “ASTMA 606MXX, Type 4 high-strength low-alloy hot-rolled sheet, dry, milledge, 2.7 by 1220 mm by coil for truck frame side members.”5. Materials and Manufacture5.1 ConditionThe material shall be furnished h
18、ot-rolledor cold-rolled as specified on the purchase order.5.2 Heat Treatment Unless otherwise specified, hot-rolledshall be furnished as rolled. When hot-rolled annealed orhot-rolled normalized material is required, it shall be specifiedon the purchase order.6. Chemical Composition6.1 The maximum l
19、imits of carbon, manganese, and sulfurshall be as prescribed in Table 1, unless otherwise agreed uponbetween the manufacturer and the purchaser.6.2 The manufacturer shall use such alloying elements,combined with the carbon, manganese, and sulfur within thelimits prescribed in Table 1 to satisfy the
20、mechanical propertiesprescribed in Table 2 or Table 3. Such elements shall beincluded and reported in the specified heat or cast analysis. Asindicated in 1.1, these steels have enhanced atmosphericcorrosion resistance and are supplied in two types: Type 2 andType 4. When requested, the producer shal
21、l supply acceptableevidence of corrosion resistance to the purchaser. For Type 2steel, confirmation of the minimum copper content requirementof 1.1 shall be sufficient evidence of corrosion resistance. ForType 4 steel, the basis for this evidence can be a corrosion-resistance index calculated from t
22、he chemical composition ofthe steel in accordance with Guide G 101. To comply withSpecification A 606, Type 4 steel shall have a minimumcorrosion-resistance index of 6.0, based upon Guide G 101Predictive Method Based on the Data of Larabee and Coburn(see Note 4.)NOTE 4The user is cautioned that the
23、Guide G 101 predictiveequation (Predictive Method Based on the Data of Larabee and Coburn)for calculation of an atmospheric corrosion index has been verified onlyfor the composition limits stated in that guide.6.3 When the steel is used in welded applications, weldingprocedure shall be suitable for
24、the steel chemistry as describedin 6.2 and the intended service.7. Mechanical Property Requirements7.1 Tension Tests:7.1.1 RequirementsMaterial as represented by the testspecimen shall conform to the tensile requirements specified inTable 2 (hot-rolled material) or in Table 3 (cold-rolled mate-rial)
25、.7.1.2 Number of TestsTwo tensile tests shall be madefrom each heat or from each lot of 50 tons 45 000 kg. Whenthe amount of finished material from a heat or lot is less than50 tons 45 000 kg, one test shall be made. When materialrolled from one heat differs 0.050 in. 1.27 mm or more inthickness, on
26、e tensile test shall be made from the thickest andthinnest material regardless of the weight represented.7.1.3 Location and Orientation:7.1.3.1 Tensile test specimens shall be taken at a pointimmediately adjacent to the material to be qualified.7.1.3.2 Tensile test samples shall be taken from the fu
27、llthickness of the sheet as rolled.7.1.3.3 Tensile test specimens shall be taken from a locationapproximately halfway between the center of the sheet and theedge of the material as rolled.7.1.3.4 Tensile test specimens shall be taken with the axis ofthe test specimen parallel to the rolling directio
28、n (longitudinaltest).7.1.4 Test MethodYield strength shall be determined byeither the 0.2 % offset method or by the 0.5 % extension underload method unless otherwise specified.7.2 Bending PropertiesThe minimum forming radius (ra-dii) that steel covered by this specification can be expected tosustain
29、 is listed in the Appendix X1 and is discussed in moredetail in Specifications A 568/A 568M and A 749/A 749M.Where tighter bend radii are required, where curved or offsetbends are involved, or where stretching or drawing are also aconsideration, the producers should be consulted.8. Workmanship, Fini
30、sh, and Appearance8.1 Edges:TABLE 1 Chemical RequirementsComposition, max, %Cast or Heat(Formerly Ladle)AnalysisProduct Check,or VerificationAnalysisCarbonA0.22 0.26Manganese 1.25 1.30Sulfur 0.04 0.06AFor compositions with a maximum carbon content of 0.15 % on heat or castanalysis, the maximum limit
31、 for manganese on heat or cast analysis may beincreased to 1.40 % (with product analysis limits of 0.19 % carbon and 1.45 %manganese).TABLE 2 Tensile RequirementsAfor Hot-Rolled MaterialAs-RolledAnnealed orNormalizedTensile strength, min ksi (MPa) 70 480 65 450Yield strength, min, ksi (MPa) 50 340 4
32、5 310Elongation in 2 in. or 50 mm, 22 22min, %AFor coil products, testing by the producer is limited to the end of the coil.Mechanical properties throughout the coil shall comply with the minimum valuesspecified.TABLE 3 Tensile Requirements for Cold-Rolled MaterialCut Lengths and CoilsTensile streng
33、th, min, ksi (MPa) 65 450Yield strength, min, ksi (MPa) 45 310Elongation in 2 in. or 50 mm, min, % 22AA0.0448 in. 1.1 mm and under in thickness20 %.A 606/A 606M 0928.1.1 Hot-RolledIn the as-rolled condition the materialhas mill edges. Pickled or blast-cleaned material has cut edges.When required, as
34、-rolled material may be specified to have cutedges. If mill edge material is required it must be specified.8.1.2 Cold-RolledCold-rolled material shall have cutedges only.8.2 Oiling:8.2.1 Hot-RolledUnless otherwise specified, hot-rolledas-rolled material shall be furnished dry, and hot-rolled pickled
35、or blast-cleaned material shall be furnished oiled. Whenrequired, pickled or blast-cleaned material may be specified tobe furnished dry, and as-rolled material may be specified to befurnished oiled.8.2.2 Cold-RolledUnless otherwise specified, cold-rolledmaterial shall be oiled. When required, cold-r
36、olled materialmay be specified to be furnished dry, but is not recommendeddue to the increased possibility of rusting.8.3 Surface Finish:8.3.1 Hot-RolledUnless otherwise specified, hot-rolledmaterial shall have an as-rolled, not pickled surface finish.When required, material may be specified to be p
37、ickled orblast-cleaned.8.3.2 Cold-RolledUnless otherwise specified, cold-rolledmaterial shall have a matte (dull) finish.9. Retests and Disposition of Non-Conforming Material9.1 Retests, conducted in accordance with the requirementsof Section 11.1 of Specification A 568/A 568M, are permittedwhen an
38、unsatisfactory test result is suspected to be theconsequence of the test method procedure.9.2 Disposition of non-conforming material shall be subjectto the requirements of Section 11.2 of Specification A 568/A 568M.10. Certification10.1 When requested, the manufacturer shall furnish copiesof a test
39、report showing the results of the heat or cast analysisand mechanical property tests made to determine compliancewith this specification. The report shall include the purchaseorder number, the ASTM designation number, and the heat orlot number correlating the test results with the materialrepresente
40、d.11. Keywords11.1 alloy steel sheet; alloy steel strip; cold rolled steelsheet; cold rolled steel strip; high strength low alloy steel; hotrolled steel sheet; hot rolled steel strip; steel sheet; steel stripAPPENDIX(Nonmandatory Information)X1. BENDING PROPERTIESTABLE X1.1 Suggested Minimum Inside
41、Radius for Cold BendingANOTE 1(t) equals a radius equivalent to the steel thickness.NOTE 2The suggested radii should be used as minimums for 90 bends in actual shop practice.Grade Minimum Inside Radius for Cold BendingHot Rolled or Cold Rolled 212 tAMaterial which does not perform satisfactorily, wh
42、en fabricated in accordance with the above requirements, may be subject to rejection pending negotiation with thesteel supplier.SUMMARY OF CHANGESCommitteeA01 has identified the location of selected changes to this standard since the last issue (A 606 04)that may impact the use of this standard. (Ap
43、proved April 1, 2009.)(1) 1.2 replaced.(2) Note 3Metric example added.(3) 7.1.2Metric values changed from “soft” to “hard.”(4) 9Entire paragraph replaced with current wording onretesting, resampling, etc.(5) Table 2Metric values changed from “soft” to “hard.”(6) Table 3Metric values changed from “so
44、ft” to “hard.”(7) Standard Designation changed to show dual standard.A 606/A 606M 093ASTM 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 th
45、e 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 responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. You
46、r 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
47、 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 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 606/A 606M 094
