1、Designation: A 1046/A 1046M 06Standard Specification forSteel Sheet, Zinc-Aluminum-Magnesium Alloy-Coated by theHot-Dip Process1This standard is issued under the fixed designation A 1046/A 1046M; the number immediately following the designation indicates theyear of original adoption or, in the case
2、of revision, the year of last revision. A number in parentheses indicates the year of lastreapproval. A superscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers zinc-aluminum-magnesiumalloy-coated steel sheet in coils and cut l
3、engths.1.2 This product is intended for applications requiringcorrosion resistance and paintability.1.3 The steel sheet is produced in a number of designations,types, grades and classes designed to be compatible withdiffering application requirements.1.4 Product furnished under this specification sh
4、all conformto the applicable requirements of the latest issue of Specifica-tion A 924/A 924M, unless otherwise provided herein.1.5 This specification is applicable to orders in eitherinch-pound units (as A 1046) or SI units (as A 1046M). Valuesin inch-pound and SI units are not necessarily equivalen
5、t.Within the text, SI units are shown in brackets. Each systemshall be used independently of the other.1.6 Unless the order specifies the “M” designation (SIunits), the product shall be furnished to inch-pound units.1.7 The text of this standard references notes and footnoteswhich provide explanator
6、y material. These notes and footnotes,excluding those in tables and figures, shall not be considered asrequirements of the standard.1.8 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establ
7、ish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2A 90/A 90M Test Method for Weight Mass of Coating onIron and Steel Articles with Zinc or Zinc-Alloy CoatingsA 568/A 568M Specification for S
8、teel, Sheet, Carbon,Structural, and High-Strength, Low-Alloy, Hot-Rolled andCold-Rolled, General Requirements forA 902 Terminology Relating to Metallic Coated Steel Prod-uctsA 924/A 924M Specification for General Requirements forSteel Sheet, Metallic-Coated by the Hot-Dip ProcessE 517 Test Method fo
9、r Plastic Strain Ratio r for Sheet MetalE 646 Test Method for Tensile Strain-Hardening Exponents(n -Values) of Metallic Sheet Materials3. Terminology3.1 Definitions:See Terminology A 902 for definitions of general terminol-ogy relating to metallic-coated hot-dip products.4. Classification4.1 The mat
10、erial is available in several designations asfollows:4.1.1 Commercial SteelCS Types A, B, and C,4.1.2 Forming SteelFS Types A and B,4.1.3 Deep Drawing SteelDDS,4.1.4 Extra Deep Drawing SteelEDDS,4.1.5 Structural SteelSS,4.1.6 High Strength Low Alloy SteelHSLAS,4.1.7 High Strength Low Alloy Steel wit
11、h ImprovedFormabilityHSLAS-F.4.2 Structural steel and high strength low alloy steel areavailable in several grades based on mechanical properties.Structural Steel Grade 50 340 is available in four classesbased on tensile strength.4.3 The product is available in several coating weightsmasses with the
12、 coating designation in accordance with Table1.5. Ordering Information5.1 Zinc-aluminum-magnesium alloy-coated steel sheet incoils and cut lengths is produced to thickness requirementsexpressed to 0.01 in. 0.01 mm. The thickness of the sheetincludes the base metal and the coating.1This specification
13、 is under the jurisdiction of ASTM Committee A05 onMetallic-Coated Iron and Steel Products and is the direct responsibility ofSubcommittee A05.11 on Sheet Specifications.Current edition approved Jan. 15, 2006. Published February 2006.2For referenced ASTM standards, visit the ASTM website, www.astm.o
14、rg, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.5.2 Orders f
15、or product to this specification shall include thefollowing information, as necessary, to adequately describe thedesired product:5.2.1 Name of product (steel sheet, zinc-aluminum-magnesium alloy-coated),5.2.2 Designation of sheet steel CS (Type A, B, or C), FS(Type A or B), DDS, EDDS, SS, HSLAS or H
16、SLAS-F,5.2.2.1 When a CS type is not specified, CS Type B will befurnished. When an FS type is not specified, FS Type B will befurnished.5.2.3 When an SS or HSLAS designation is specified, statethe grade or class, or combination thereof.5.2.4 ASTM designation number and year of issue, such asA 1046-
17、_ for inch-pound units or A 1046M-_ for SI units,5.2.5 Coating designation,5.2.6 Chemically treated or not chemically treated,5.2.7 Oiled or not oiled,5.2.8 Dimensions (show thickness, width, flatness require-ments (if appropriate), and length (if cut length). The pur-chaser shall specify the approp
18、riate table of thickness toler-ances in Specification A 924/A 924M that applies to the order,that is, the table of thickness tolerances for38-in. 10-mmedge distance, or the table of thickness tolerances for 1-in.25-mm edge distance.5.2.9 Coil size requirements (specify maximum outsidediameter (OD),
19、acceptable inside diameter (ID), and maximumweight mass),5.2.10 Packaging,5.2.11 Certification, if required, and heat analysis and me-chanical property report,5.2.12 Application (show part identification and descrip-tion), and5.2.13 Special requirements (if any).5.2.14 If required, the product may b
20、e ordered to a specifiedbase metal thickness. See Supplementary Requirement S1.NOTE 1Typical ordering descriptions are as follows:Steel sheet, zinc-aluminum-magnesium alloy coated, Forming Steel TypeB, ASTM A 1046-_, coating designation ZM90, chemical treatment, nooil, minimum 0.034 by 48 in. by coi
21、l, 60-in. maximum OD, 24-in. ID,10,000-lb maximum, for inner door panel, or steel sheet, zinc-aluminum-magnesium alloy coated, Commercial Steel Type B, ASTM A 1046M-_, coating designation ZMM275, not chemically treated, oiled, mini-mum 0.85 by 900 mm by coil, 1200-mm maximum OD, 610-mm ID,9,000-kg m
22、aximum, for building panels.6. Chemical Composition6.1 Base Metal:6.1.1 The heat analysis of the base metal shall conform tothe requirements shown in Table 2 for CS (Types A, B, and C),FS (Types A and B), DDS and EDDS, and Table 3 for SS,HSLAS and HSLAS-F.6.1.2 Each of the elements listed in Tables
23、2 and 3 shall beincluded in the report of heat analysis. When the amount ofcopper, nickel, chromium, or molybdenum is less than 0.02 %,report the analysis as either 0.02 % or the actual determinedvalue. When the amount of vanadium, titanium or columbiumis less than 0.008 %, report the analysis as ei
24、ther 0.008 % orthe actual determined value.6.1.3 See Specification A 924/A 924M for chemical analy-sis procedures and product analysis tolerances.TABLE 1 Weight Mass of Coating RequirementAInch-Pound UnitsCoatingDesignationMinimum RequirementTriple-Spot TestTotal Both Sides, oz/ft2Single-Spot TestTo
25、tal Both Sides, oz/ft2ZM210 2.10 1.80ZM165 1.65 1.40ZM140 1.40 1.20ZM115 1.15 1.00ZM90 0.90 0.80ZM75 0.75 0.65ZM60 0.60 0.50ZM40 0.40 0.30ZM30 0.30 0.25ZM20 0.20 0.16SI UnitsCoatingDesignationMinimum RequirementTriple-Spot TestTotal Both Sides, g/m2Single-Spot TestTotal Both Sides, g/m2ZMM600 600 51
26、0ZMM500 500 425ZMM450 450 385ZMM350 350 300ZMM275 275 235ZMM220 220 190ZMM180 180 150ZMM120 120 90ZMM90 90 75ZMM60 60 50AThe coating designation number is the term by which this product is specified. Because of the many variables and changing conditions that are characteristic ofcontinuous hot-dip c
27、oating lines, the weight mass of the coating is not always evenly divided between the two surfaces of a sheet, nor is the coating evenly distributedfrom edge to edge. However, it can normally be expected that not less than 40 % of the single-spot test limit will be found on either surface.A 1046/A 1
28、046M 0626.2 Coating Bath CompositionThe bath metal used forzinc-aluminum-magnesium alloycoated sheet shall contain 5to 13 % aluminum, 2 to 4 % magnesium, up to 1 % totaladditional alloying elements (except iron) and the balance zinc.7. Mechanical Properties7.1 Structural steel and high strength low
29、alloy steel shallconform to the mechanical property requirements of Table 4for the grade or class or combination thereof, specified.7.2 The typical mechanical properties for CS (Types A, B,and C), FS (Types A and B), DDS, EDDS steel sheetdesignations are listed in Table 5. These mechanical propertyv
30、alues are non-mandatory. They are intended solely to providethe purchaser with as much information as possible to make aninformed decision on the steel to be specified. Values outsidethese ranges are to be expected.7.3 When base metal mechanical properties are required, alltests shall be conducted i
31、n accordance with the methodsspecified in Specification A 924/A 924M.7.4 Bending Properties:7.4.1 Minimum Cold Bending RadiiStructural steel sheetis commonly fabricated by cold bending. There are manyinterrelated factors that affect the ability of a steel to cold formover a given radius under shop c
32、onditions. These factorsinclude: thickness, strength level, degree of restraint, relation-ship to rolling direction, chemistry and base metal microstruc-ture. Appendix X1 lists the suggested minimum inside radiusfor 90 cold bending for these steel sheets. They pre-supposeTABLE 2 Chemical Requirement
33、sAComposition, %-Heat Analysis Element, max (unless otherwise shown)Designation C Mn P S Al, min Cu Ni Cr Mo V Cb TiBNCS Type AC,D,E0.10 0.60 0.030 0.035 . 0.20 0.20 0.15 0.06 0.008 0.008 0.025 .CS Type BC,F0.02 to 0.15 0.60 0.030 0.035 . 0.20 0.20 0.15 0.06 0.008 0.008 0.025 .CS Type CC,D,E0.08 0.6
34、0 0.100 0.035 . 0.20 0.20 0.15 0.06 0.008 0.008 0.025 .FS Type AC,G0.10 0.50 0.020 0.035 . 0.20 0.20 0.15 0.06 0.008 0.008 0.025 .FS Type BC,F0.02 to 0.10 0.50 0.020 0.030 . 0.20 0.20 0.15 0.06 0.008 0.008 0.025 .DDSD,E,H0.06 0.50 0.020 0.025 0.01 0.20 0.20 0.15 0.06 0.008 0.008 0.025 .EDDSH,I0.02 0
35、.40 0.020 0.020 0.01 0.20 0.20 0.15 0.06 0.10 0.10 0.15 .AWhere an ellipsis (.) appears in this table, there is no requirement, but the analysis shall be reported.BFor steels containing more than 0.02 % carbon, titanium is permitted to 0.025 % provided the ratio of % titanium to % nitrogen does not
36、exceed 3.4.CWhen a deoxidized steel is required for the application, the purchaser has the option to order CS and FS to a minimum of 0.01 % total aluminum.DSteel is permitted to be furnished as a vacuum degassed or chemically stabilized steel, or both, at the producers option.EFor carbon levels less
37、 than or equal to 0.02 %, vanadium, columbium, or titanium, or combinations thereof are permitted to be used as stabilizing elementsattheproducers option. In such cases, the applicable limit for vanadium and columbium shall be 0.10 % max. and the limit for titanium shall be 0.15 % max.FFor CS and FS
38、, specify Type B to avoid carbon levels below 0.02 %.GShall not be furnished as a stabilized steel.HMinimum Al content is not required if agreed to by purchaser and supplier.IShall be furnished as a stabilized steel.TABLE 3 Chemical RequirementsAComposition, %-Heat Analysis Element, max (unless othe
39、rwise shown)Designation C Mn P S Cu Ni Cr Mo VBCbBTiB,C,DNSS Grade33 230 0.20 . 0.04 0.040 0.20 0.20 0.15 0.06 0.008 0.008 0.025 .37 255 0.20 . 0.10 0.040 0.20 0.20 0.15 0.06 0.008 0.008 0.025 .40 275 0.25 . 0.10 0.040 0.20 0.20 0.15 0.06 0.008 0.008 0.025 .50 340 Class 1,2 and 4 0.25 . 0.20 0.040 0
40、.20 0.20 0.15 0.06 0.008 0.008 0.025 .50 340 Class 3 0.25 . 0.04 0.040 0.20 0.20 0.15 0.06 0.008 0.008 0.025 .80 550 0.20 . 0.04 0.040 0.20 0.20 0.15 0.06 0.008 0.015 0.025 .HSLASE40 275 0.20 1.50 . 0.035 . 0.20 0.15 0.16 0.01 min 0.005 min 0.01 min .50 340 0.20 1.50 . 0.035 0.20 0.20 0.15 0.16 0.01
41、 min 0.005 min 0.01 min .60 410 0.20 1.50 . 0.035 0.20 0.20 0.15 0.16 0.01 min 0.005 min 0.01 min .70 480 0.20 1.65 . 0.035 0.20 0.20 0.15 0.16 0.01 min 0.005 min 0.01 min .80 550 0.20 1.65 . 0.035 0.20 0.20 0.15 0.16 0.01 min 0.005 min 0.01 min .HSLAS-FF40 275 0.15 1.50 . 0.035 . 0.20 0.15 0.16 0.0
42、1 min 0.005 min 0.01 min .50 340 0.15 1.50 . 0.035 0.20 0.20 0.15 0.16 0.01 min 0.005 min 0.01 min .60 410 0.15 1.50 . 0.035 0.20 0.20 0.15 0.16 0.01 min 0.005 min 0.01 min .70 480 0.15 1.65 . 0.035 0.20 0.20 0.15 0.16 0.01 min 0.005 min 0.01 min .80 550 0.15 1.65 . 0.035 0.20 0.20 0.15 0.16 0.01 mi
43、n 0.005 min 0.01 min .AWhere an ellipsis (.) appears in this table there is no requirement, but the analysis shall be reported.BFor carbon levels less than or equal to 0.02 %, vanadium, columbium, or titanium, or combinations thereof, are permitted to be used as stabilizing elements at theproducers
44、option. In such cases, the applicable limit for vanadium and columbium shall be 0.10 % max, and the limit for titanium shall be 0.15 % max.CTitanium is permitted for SS steels to 0.025 % provided the ratio of % titanium to % nitrogen does not exceed 3.4.DFor steels containing more than 0.02 % carbon
45、, titanium is permitted to 0.025 %, provided the ratio of % titanium to % nitrogen does not exceed 3.4.EHSLAS and HSLAS-F steels commonly contain the strengthening elements columbium, vanadium, and titanium added singly or in combination. The minimumrequirements only apply to the microalloy elements
46、 selected for strengthening of the steel.FThe producer has the option to treat HSLAS-F steels by means of small alloy additions to effect sulfide inclusion control.A 1046/A 1046M 063TABLE 4 Mechanical Property Requirements, Base Metal (Longitudinal)Inch-Pound UnitsDesignation Grade Yield Strength,mi
47、n, ksiTensile Strength,min, ksiAElongationin2in.,min,%ASS 33 33 45 2037 37 52 1840 40 55 1650 Class 1 50 65 1250 Class 2 50 . 1250 Class 3 50 70 1250 Class 4 50 60 1280B80C82 .HSLAS 40 40 50D2250 50 60D2060 60 70D1670 70 80D1280 80 90D10HSLAS-F 40 40 50D2450 50 60D2260 60 70D1870 70 80D1480 80 90D12
48、SI UnitsDesignation Grade Yield Strength,min, MPaTensile Strength,min, MPaAElongationin 50 mm, min, %ASS 230 230 310 20255 255 360 18275 275 380 16340 Class 1 340 450 12340 Class 2 340 . 12340 Class 3 340 480 12340 Class 4 340 410 12550B550C570 .HSLAS 275 275 340D22340 340 410D20410 410 480D16480 48
49、0 550D12550 550 620D10HSLAS-F 275 275 340D24340 340 410D22410 410 480D18480 480 550D14550 550 620D12AWhere an ellipsis (.) appears in this table there is no requirement.BFor sheet thickness of 0.028 in. 0.71 mm or thinner, no tension test is required if the hardness result in Rockwell B 85 or higher.CAs there is no discontinuous yield curve, the yield strength should be taken as the stress at 0.5 % elongation under load or 0.2 % offset.DIf a higher tensile strength is required, the user should consult the
