1、Designation: A 606 04Standard Specification forSteel, Sheet and Strip, High-Strength, Low-Alloy, Hot-Rolledand Cold-Rolled, with Improved Atmospheric CorrosionResistance1This standard is issued under the fixed designation A 606; the number immediately following the designation indicates the year ofo
2、riginal adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department o
3、f 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 atmospheric corrosion
4、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 or without c
5、opper 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 inch-pound units are to be regardedas
6、the standard.2. Referenced Documents2.1 ASTM Standards:2A 109/A 109M Specification for Steel, Strip, Carbon (0.25Maximum Percent), Cold-RolledA 568/A 568M Specification for Steel, Sheet, Carbon, andHigh-Strength, Low-Alloy, Hot-Rolled and Cold-Rolled,General Requirements forA 749/A 749M Specificatio
7、n for Steel, Strip, Carbon andHigh-Strength, 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 require
8、ments of the current edition ofSpecification 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 adeq
9、uatelythe desired material:4.1.1 ASTM specification 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
10、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 unlessotherwise specified), and4.1.6 Dimensions (thickness, width, and whether cut lengthsor coils).4.1.6.1 As agreed upon between the purchaser and theproduce
11、r, material ordered to this specification 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
12、. Thepurchaser should contact the producer regarding possible limitations priorto placing an order.4.1.7 Coil size (must include inside diameter, outside diam-eter, and maximum weight),4.1.8 Application (show part identification and description),1This specification is under the jurisdiction of ASTM
13、Committee A01 on Steel,Stainless Steel and Related Alloys, and is the direct responsibility of SubcommitteeA01.19 on Steel Sheet and Strip.Current edition approved March 1, 2004. Published March 2004. Originallyapproved in 1970. Last previous edition approved in 2001 as A 606 01.2For referenced ASTM
14、 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.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM
15、 International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.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:
16、“ASTMA 606XX, Type 4 high-strength low-alloy hot-rolled sheet, dry, mill edge0.106 by 48 by 96 in. for truck frame side members.”5. Materials and Manufacture5.1 ConditionThe material shall be furnished hot-rolledor cold-rolled as specified on the purchase order.5.2 Heat Treatment Unless otherwise sp
17、ecified, 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 Table 1, unless otherwise agreed
18、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. Such elements shall beincluded and reporte
19、d 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 shall supply acceptableevidence of corrosion resistance to the purchaser. For Type 2steel, confirmati
20、on 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 the chemical composition ofthe steel in accordance with Guide G 101. To comply withSpecification A
21、 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 Guide G 101 predictiveequation (Predictive Method Based on the Data of Larabee and Coburn)for cal
22、culation 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 the steel chemistry as describedin 6.2 and the intended service.7. Mechanical Property Requiremen
23、ts7.1 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).7.1.2 Number of TestsTwo tensile tests shall be madefrom each heat or from each lot of 50 tons (
24、45 Mg). When theamount of finished material from a heat or lot is less than 50tons, one test shall be made. When material rolled from oneheat differs 0.050 in. (1.27 mm) or more in thickness, onetensile test shall be made from the thickest and thinnestmaterial regardless of the weight represented.7.
25、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 fullthickness of the sheet as rolled.7.1.3.3 Tensile test specimens shall be taken from a locationapproximate
26、ly 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 direction (longitudinaltest).7.1.4 Test MethodYield strength shall be determined byeither the 0.2 % offset method o
27、r 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 is listed in the Appendix X1 and is discussed in moredetail in Specifications A 568/A 568M and A 749/A 749
28、M.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, Finish, and Appearance8.1 Edges:8.1.1 Hot-RolledIn the as-rolled condition the materialhas mill edges. Pickled
29、or blast-cleaned material has cut edges.When required, as-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:TABLE 1 Chemical RequirementsComposition, max, %Cast or Heat(F
30、ormerly 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 for manganese on heat or cast analysis may beincreased to 1.40 % (with product analysis l
31、imits of 0.19 % carbon and 1.45 %manganese).TABLE 2 Tensile RequirementsAfor Hot-Rolled MaterialAs-RolledAnnealed orNormalizedTensile strength, min ksi (MPa) 70 (480) 65 (450)Yield strength, min, ksi (MPa) 50 (340) 45 (310)Elongation in 2 in. or 50 mm, 22 22min, %AFor coil products, testing by the p
32、roducer 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 strength, min, ksi (MPa) 65 (450)Yield strength, min, ksi (MPa) 45 (310)Elongation in 2
33、in. or 50 mm, min, % 22AA0.0448 in. (1.14 mm) and under in thickness20 %.A6060428.2.1 Hot-RolledUnless otherwise specified, hot-rolledas-rolled material shall be furnished dry, and hot-rolled pickledor blast-cleaned material shall be furnished oiled. Whenrequired, pickled or blast-cleaned material m
34、ay 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-rolled materialmay be specified to be furnished dry, but is not recommendeddue to the increased possib
35、ility 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 specified, cold-rolledmaterial shall have a
36、matte (dull) finish.9. Retests9.1 If the results on an original tensile specimen are within2 ksi (14 MPa) of the required tensile strength, within 1 ksi (7MPa) of the required yield strength, or within 2 % of therequired elongation, a retest shall be permitted for which onerandom specimen from the h
37、eat or test lot shall be used. If theresults on this retest specimen meet the specified requirements,the heat or test lot will be accepted.10. Certification10.1 When requested, the manufacturer shall furnish copiesof a test report showing the results of the heat or cast analysisand mechanical proper
38、ty 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.11. Keywords11.1 alloy steel sheet; alloy steel strip; cold rolled steelsh
39、eet; 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 Radius for Cold BendingANOTE 1(t) equals a radius equivalent to the steel th
40、ickness.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, when fabricated in accordance with the above requirements, may be subject to r
41、ejection pending negotiation with thesteel supplier.SUMMARY OF CHANGESCommittee A01 has identified the location of selected changes made to this standard since the last issue,A 60601, that may impact the use of this standard. (Approved March 1, 2004.)(1) Percentage sign (%) added in 1.1. (2) The 90
42、% caveat removed from Footnote A of Table 2.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
43、 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 are invited either for revisio
44、n 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 sho
45、uldmake 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).A606043
