1、Designation: A606/A606M 15Standard Specification forSteel, Sheet and Strip, High-Strength, Low-Alloy, Hot-Rolledand Cold-Rolled, with Improved Atmospheric CorrosionResistance1This standard is issued under the fixed designation A606/A606M; the number immediately following the designation indicates th
2、e 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 U.S
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 atmosphe
4、ric 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 wit
5、h 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 G101.1.2 The values stated in either SI units or inch-p
6、ound 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 Stand
7、ards:2A109/A109M Specification for Steel, Strip, Carbon (0.25Maximum Percent), Cold-RolledA568/A568M Specification for Steel, Sheet, Carbon,Structural, and High-Strength, Low-Alloy, Hot-Rolled andCold-Rolled, General Requirements forA749/A749M Specification for Steel, Strip, Carbon andHigh-Strength,
8、 Low-Alloy, Hot-Rolled, General Require-ments forG101 Guide for Estimating the Atmospheric Corrosion Re-sistance of Low-Alloy Steels3. General Requirements for Delivery3.1 Material furnished under this specification shall con-form to the applicable requirements of the current edition ofSpecification
9、 A568/A568M and the dimensional tolerancetables of Specification A109/A109M, 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 specificat
10、ion 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),4.1.2.1 Hot rolled sheet shall either be CS or grade 50(Grade 50 shall be supplied if not specified).4.1.2.2 Cold rolled sheet shall ei
11、ther be CS or grade 45(Grade 45 shall be supplied if not specified).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),4.1.5 FinishCold-rolled only (indicate exposed (E) orunexposed (U). Matte (dull) finish will be supplied unle
12、ssotherwise specified), and4.1.6 Dimensions (thickness, width, and whether cut lengthsor coils).NOTE 2Not all producers are capable of meeting all of the limitationsof the thickness tolerance tables in Specification A568/A568M. Thepurchaser should contact the producer regarding possible limitations
13、priorto placing an order.4.1.7 Coil size (must include inside diameter, outsidediameter, and maximum weight),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
14、.Current edition approved Nov. 1, 2015. Published November 2015. Originallyapproved in 1970. Last previous edition approved in 2009 as A606/A606M 09a.DOI: 10.1520/A0606_A0606M-15.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org.
15、 For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States14.1
16、.8 Application (show part identification and description),4.1.9 Cast or heat (formerly ladle) analysis and mechanicalproperties report (if required) (see 10.1), and4.1.10 Special requirements (if any).4.1.10.1 When the purchaser requires thickness tolerancesfor38 in. 10 mm minimum edge distance (see
17、 SupplementaryRequirement in Specification A568/A568M), this requirementshall be specified in the purchase order or contract.NOTE 3A typical ordering description is as follows: “ASTMA606XX, Grade 50, Type 4 high-strength low-alloy hot-rolled sheet, dry,mill edge 0.106 by 48 by 96 in. for truck frame
18、 side members.” Or,“ASTMA606MXX, Grade 50, Type 4 high-strength low-alloy hot-rolledsheet, dry, mill edge, 2.7 by 1220 mm by coil for truck frame sidemembers.”5. Materials and Manufacture5.1 ConditionThe material shall be furnished hot-rolled orcold-rolled as specified on the purchase order.5.2 Heat
19、 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 limits of carbon, manganese, and sulfurshall be as prescribed in Tab
20、le 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 mechanical propertiesprescribed in Table 2 or Table 3. As indicated
21、 in 1.1, thesesteels have enhanced atmospheric corrosion resistance and aresupplied in two types: Type 2 and Type 4. When requested, theproducer shall supply acceptable evidence of corrosion resis-tance to the purchaser.6.2.1 For Type 2 steel, confirmation of the minimum coppercontent requirement of
22、 1.1 shall be sufficient evidence ofcorrosion resistance.6.2.2 For Type 4 steel, the basis for this evidence can be acorrosion-resistance index calculated from the chemical com-position of the steel in accordance with Guide G101.Tocomply with Specification A606, Type 4 steel shall have aminimum corr
23、osion-resistance index of 6.0, based upon GuideG101 (see Note 4).NOTE 4The user is cautioned that the Guide G101 predictive equationfor 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 application
24、s, weldingprocedure shall be suitable for the steel chemistry as describedin 6.2 and the intended service.7. Mechanical Property Requirements7.1 Material ordered as CS has no mechanical propertiesrequirements. Specific requirements may be added if agreedupon between the purchaser and the producer.7.
25、2 Tension Tests:7.2.1 RequirementsMaterial ordered to either grade 50 ashot rolled or grade 45 as cold rolled shall conform to the tensilerequirements specified in Table 2 (hot-rolled material) or inTable 3 (cold-rolled material).7.2.2 Number of TestsTwo tensile tests shall be made fromeach heat or
26、from each lot of 50 tons 45 000 kg. When theamount of finished material from a heat or lot is less than 50tons 45 000 kg, one test shall be made. When material rolledfrom one heat differs 0.050 in. 1.27 mm or more in thickness,one tensile test shall be made from the thickest and thinnestmaterial reg
27、ardless of the weight represented.7.2.3 Location and Orientation:7.2.3.1 Tensile test specimens shall be taken at a pointimmediately adjacent to the material to be qualified.7.2.3.2 Tensile test samples shall be taken from the fullthickness of the sheet as rolled.7.2.3.3 Tensile test specimens shall
28、 be taken from a locationapproximately halfway between the center of the sheet and theedge of the material as rolled.7.2.3.4 Tensile test specimens shall be taken with the axis ofthe test specimen parallel to the rolling direction (longitudinaltest).7.2.4 Test MethodYield strength shall be determine
29、d byeither the 0.2 % offset method or by the 0.5 % extension underload method unless otherwise specified.7.3 Bending PropertiesThe minimum forming radius (ra-dii) that steel covered by this specification can be expected tosustain is listed in the Appendix X1 and is discussed in moredetail in Specifi
30、cations A568/A568M and A749/A749M.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
31、 limit 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 Grade 50 MaterialAs-RolledAnnealed orNormalizedTensile strength, min ksi (MPa) 70 480 65 450Yield strength, min, ksi
32、 (MPa) 50 340 45 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 Grade 45 MaterialCut Lengths
33、 and CoilsTensile strength, 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 %.A606/A606M 152Where tighter bend radii are required, where curved or offsetbends are involved, or where stretching or drawing ar
34、e also aconsideration, the producers should be consulted.8. Workmanship, Finish, and Appearance8.1 Edges:8.1.1 Hot-RolledIn the as-rolled condition the materialhas mill edges. Pickled or blast-cleaned material has cut edges.When required, as-rolled material may be specified to have cutedges. If mill
35、 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-rolled as-rolled material shall be furnished dry, and hot-rolled pickled orblast-cleaned material shall be furnished oiled. When r
36、equired,pickled or blast-cleaned material may be specified to befurnished 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-rolled materialmay be specified to be furnished dry, but is
37、 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 pickled orblast-cleaned.8.3.2 Cold-RolledUnless otherwise s
38、pecified, 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 A568/A568M, are permittedwhen an unsatisfactory test result is suspected to be theconsequence
39、 of the test method procedure.9.2 Disposition of non-conforming material shall be subjectto the requirements of Section 11.2 of Specification A568/A568M.10. Certification10.1 When requested, the manufacturer shall furnish copiesof a test report showing the results of the heat or cast analysisand mec
40、hanical 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 materialrepresented.10.1.1 The heat or cast analysis shall include reporting the
41、elements listed in 6.1 and reporting the following elements.10.1.1.1 Copper, chromium, nickel, phosphorous,columbium, vanadium, titanium, molybdenum, sulphur,nitrogen, manganese, and carbon.10.1.1.2 For columbium, titanium, vanadium; if less than0.008 wt % they may be reported as 0.008 wt %.10.1.1.3
42、 Other elements as agreed upon between purchaserand producer.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
43、)X1. BENDING PROPERTIESTABLE X1.1 Suggested Minimum Inside 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 Roll
44、ed 212 tAMaterial which does not perform satisfactorily, when fabricated in accordance with the above requirements, may be subject to rejection pending negotiation with the steelsupplier.A606/A606M 153SUMMARY OF CHANGESCommittee A01 has identified the location of selected changes to this standard si
45、nce the last issue(A606/A606M 09a) that may impact the use of this standard. (Approved Nov. 1, 2015.)(1) Revised Sections 4 and 7 to add CS (no mandatorymechanical properties) class of material.(2) Revised Section 10 (updated for reporting of composition).(3) Revised Section 6 to remove references t
46、o a specificmethod in Guide G101.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
47、 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 of this s
48、tandard 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 you
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