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ASTM A1046 - A 1046M - 14.pdf

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ASTM A1046 - A 1046M - 14.pdf

Designation A1046/A1046M − 14Standard Specification forSteel Sheet, Zinc-Aluminum-Magnesium Alloy-Coated by theHot-Dip Process1This standard is issued under the fixed designation A1046/A1046M; the number immediately following the designation indicates theyear of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of lastreapproval. A superscript epsilon indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification covers zinc-aluminum-magnesiumalloy-coated steel sheet in coils and cut lengths.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 shall conformto the applicable requirements of the latest issue of Specifica-tion A924/A924M, unless otherwise provided herein.1.5 The text of this standard references notes and footnoteswhich provide explanatory material. These notes and footnotes,excluding those in tables and figures, shall not be considered asrequirements of the standard.1.6 This specification is applicable to orders in eitherinch-pound units as A1046 or SI units as A1046M. Valuesin inch-pound and SI units are not necessarily equivalent.Within the text, SI units are shown in brackets. Each systemshall be used independently of the other.1.7 Unless the order specifies the “M” designation SIunits, the product shall be furnished to inch-pound units.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 establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards2A90/A90M Test Method for Weight [Mass] of Coating onIron and Steel Articles with Zinc or Zinc-Alloy CoatingsA568/A568M Specification for Steel, Sheet, Carbon,Structural, and High-Strength, Low-Alloy, Hot-Rolled andCold-Rolled, General Requirements forA902 Terminology Relating to Metallic Coated Steel Prod-uctsA924/A924M Specification for General Requirements forSteel Sheet, Metallic-Coated by the Hot-Dip ProcessE517 Test Method for Plastic Strain Ratio r for Sheet MetalE646 Test Method for Tensile Strain-Hardening Exponentsn -Values of Metallic Sheet Materials3. Terminology3.1 DefinitionsSee Terminology A902 for definitions of general terminologyrelating to metallic-coated hot-dip products.4. Classification4.1 The material is available in several designations asfollows4.1.1 Commercial SteelCS Types A, B, and C,4.1.2 Deep Drawing SteelDDS,4.1.3 Extra Deep Drawing SteelEDDS,4.1.4 Forming SteelFS Types A and B,4.1.5 High Strength Low Alloy SteelHSLAS,4.1.6 High Strength Low Alloy Steel with ImprovedFormabilityHSLAS-F.4.1.7 Structural SteelSS,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 weights[masses] with the 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 0.001 in. [0.01 mm]. The thickness of the sheetincludes the base metal and the coating.1This specification 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 May 1, 2014. Published May 2014. Originallyapproved in 2006. Last previous edition approved in 2010 as A1046/A1046M - 10aε1. DOI 10.1520/A1046_A1046M-14.2For 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 standard’s 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 States15.2 Orders for product to this specification shall include thefollowing information, as necessary, to adequately describe thedesired product5.2.1 Name of product steel sheet, zinc-aluminum-magnesium alloy-coated,5.2.2 Designation of sheet steel {CS Type A, B, or C, FSType A or B, DDS, EDDS, SS, HSLAS or HSLAS-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 asA1046-___ for inch-pound units or A1046M-___ 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, mimimum or nominal,width, flatness requirements if appropriate, and length if cutlength.5.2.9 Coil size requirements specify maximum outsidediameter OD, 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 anddescription, and5.2.13 Special requirements if any.5.2.13.1 When the purchaser requires thickness tolerancesfor3⁄8-in. [10-mm] minimum edge distance see Supplemen-tary Requirement in specification A924/A924M, this require-ment shall be specified in the purchase order or contract.NOTE 1Typical ordering descriptions are as followsSteel sheet, zinc-aluminum-magnesium alloy coated, Forming Steel TypeB, ASTM A1046-___, coating designation ZM90, chemical treatment, nooil, minimum 0.034 by 48 in. by coil, 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 A1046M-___,coating designation ZMM275, not chemically treated, oiled, minimum0.85 by 900 mm by coil, 1200-mm maximum OD, 610-mm ID, 9,000-kgmaximum, for building panels.6. Chemical Composition6.1 Base Metal6.1.1 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 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 determinedTABLE 1 Weight [Mass] of Coating RequirementAInch-Pound UnitsCoatingDesignationMinimum RequirementTriple-Spot TestTotal Both Sides, oz/ft2Single-Spot TestTotal Both Sides, oz/ft2ZM20 0.20 0.16ZM30 0.30 0.25ZM40 0.40 0.30ZM50 0.50 0.40ZM60 0.60 0.50ZM70 0.70 0.60ZM75 0.75 0.65ZM90 0.90 0.80ZM100 1.00 0.90ZM115 1.15 1.00ZM140 1.40 1.20ZM165 1.65 1.40ZM210 2.10 1.80SI UnitsCoatingDesignationMinimum RequirementTriple-Spot TestTotal Both Sides, g/m2Single-Spot TestTotal Both Sides, g/m2ZMM60 60 50ZMM90 90 75ZMM120 120 90ZMM150 150 120ZMM180 180 150ZMM210 210 180ZMM220 220 190ZMM275 275 235ZMM300 300 270ZMM350 350 300ZMM450 450 385ZMM500 500 425ZMM600 600 510AThe coating designation number is the term by which this product is specified. Because of the many variables and changing conditions that are characteristic of continuoushot-dip coating lines, the weight [mass] of the coating is not always evenly divided between the two surfaces of a sheet, nor is the coating evenly distributed from edgeto edge. However, it can normally be expected that not less than 40 of the single-spot test limit will be found on either surface.A1046/A1046M − 142value. When the amount of vanadium, titanium or columbiumis less than 0.008 , report the analysis as either 0.008 orthe actual determined value.6.1.3 See Specification A924/A924M for chemical analysisprocedures and product analysis tolerances.6.2 Coating Bath CompositionThe bath metal used forzinc-aluminum-magnesium alloy–coated 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 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 propertyvalues 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 in accordance with the methodsspecified in Specification A924/A924M.7.4 Bending Properties7.4.1 Minimum Cold Bending RadiiStructural steel sheetis commonly fabricated by cold bending. There are manyinterrelated factors that affect the ability of a steel to cold formTABLE 2 Chemical RequirementsAComposition, -Heat Analysis Element, max unless otherwise shownDesignation 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 0.60 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 0.40 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 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 producer’s option.EFor carbon levels less than or equal to 0.02 , vanadium, columbium, or titanium, or combinations thereof are permitted to be used as stabilizing elementsattheproducer’s 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, 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 otherwise shownDesignation 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 0.20 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 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 0.01 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 min 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 theproducer’s 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, 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 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.A1046/A1046M − 143over a given radius under shop conditions. 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-suppose“hard way” bending bend axis parallel to rolling direction andTABLE 4 Mechanical Property Requirements, Base Metal LongitudinalInch-Pound UnitsDesignation Grade Yield Strength,min, 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 90D12SI 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 480 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 i

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