1、Designation: A1046/A1046M 17A1046/A1046M 17aStandard 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,
2、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-magnesium alloy-coated steel sheet in co
3、ils and cut lengths.1.2 This product is intended for applications requiring corrosion resistance and paintability.1.3 The steel sheet is produced in a number of designations, types, grades and classes designed to be compatible with differingapplication requirements.1.4 Product furnished under this s
4、pecification shall conform to the applicable requirements of the latest issue of SpecificationA924/A924M, unless otherwise provided herein.1.5 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes,excluding those in tables and figures,
5、 shall not be considered as requirements of the standard.1.6 This specification is applicable to orders in either inch-pound units (as A1046) or SI units (as A1046M). Values ininch-pound and SI units are not necessarily equivalent. Within the text, SI units are shown in brackets. Each system shall b
6、e usedindependently of the other.1.7 Unless the order specifies the “M” designation (SI units), the product shall be furnished to inch-pound units.1.8 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this st
7、andard to establish appropriate safety and healthsafety, health, environmental practices and determine theapplicability of regulatory limitations prior to use.1.9 This international standard was developed in accordance with internationally recognized principles on standardizationestablished in the D
8、ecision on Principles for the Development of International Standards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2A90/A90M Test Method for Weight Mass of Coating on Iron and Steel Articles wit
9、h Zinc or Zinc-Alloy CoatingsA568/A568M Specification for Steel, Sheet, Carbon, Structural, and High-Strength, Low-Alloy, Hot-Rolled and Cold-Rolled,General Requirements forA902 Terminology Relating to Metallic Coated Steel ProductsA924/A924M Specification for General Requirements for Steel Sheet, M
10、etallic-Coated by the Hot-Dip ProcessE517 Test Method for Plastic Strain Ratio r for Sheet MetalE646 Test Method for Tensile Strain-Hardening Exponents (n -Values) of Metallic Sheet Materials3. Terminology3.1 Definitions:See Terminology A902 for definitions of general terminology relating to metalli
11、c-coated hot-dip products.1 This specification is under the jurisdiction ofASTM Committee A05 on Metallic-Coated Iron and Steel Products and is the direct responsibility of Subcommittee A05.11on Sheet Specifications.Current edition approved Feb. 1, 2017Nov. 1, 2017. Published February 2017November 2
12、017. Originally approved in 2006. Last previous edition approved in 20162017as A1046/A1046M - 16.A1046/A1046M - 17. DOI: 10.1520/A1046_A1046M-17.10.1520/A1046_A1046M-17A.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annua
13、l Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be t
14、echnically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.*A Summary of Changes section appears at the end of t
15、his standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States14. Classification4.1 The material is available in several designations as follows:4.1.1 Commercial SteelCS Types A, B, and C,4.1.2 Deep Drawing SteelDDS,4.1.3 Extra Deep Draw
16、ing 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 Improved FormabilityHSLAS-F.4.1.7 Structural SteelSS,4.2 Structural steel and high strength low alloy steel are available in several grades based on mechanical properti
17、es. StructuralSteel Grade 50 340 is available in four classes based on tensile strength.4.3 The product is available in several coating weights masses with the coating designation in accordance with Table 1.5. Ordering Information5.1 Zinc-aluminum-magnesium alloy-coated steel sheet in coils and cut
18、lengths is produced to thickness requirements expressedto 0.001 in. 0.01 mm. The thickness of the sheet includes the base metal and the coating.5.2 Orders for product to this specification shall include the following information, as necessary, to adequately describe thedesired product:5.2.1 Name of
19、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 HSLAS-F,5.2.2.1 When a CS type is not specified, CS Type B will be furnished. When an FS type is not specified, FS Type B will befurnished.5.2.
20、3 When an SS or HSLAS designation is specified, state the grade or class, or combination thereof.5.2.4 ASTM designation number and year of issue, such as A1046-_ for inch-pound units or A1046M-_ for SI units,5.2.5 Coating designation,5.2.6 Coating bath composition type (see section 6.2).TABLE 1 Weig
21、ht 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 1.1
22、5 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 35
23、0 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
24、 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 17a25.2.7 Chemically treated or not chemically treated,5.2.8 Oiled or
25、not oiled,5.2.9 Dimensions (show thickness, minimum or nominal, width, flatness requirements (if appropriate), and length (if cutlength).5.2.10 Coil size requirements (specify maximum outside diameter (OD), acceptable inside diameter (ID), and maximum weightmass),5.2.11 Packaging,5.2.12 Certificatio
26、n, if required, and heat analysis and mechanical property report,5.2.13 Application (show part identification and description), and5.2.14 Special requirements (if any).5.2.14.1 When the purchaser requires thickness tolerances for 38-in. 10-mm minimum edge distance (see SupplementaryRequirement in sp
27、ecification A924/A924M), this requirement shall be specified in the purchase order or contract.NOTE 1Typical ordering descriptions are as follows:Steel sheet, zinc-aluminum-magnesium alloy coated, Forming Steel Type B, ASTM A1046-_, coating designation ZM90, chemical treatment, no oil,minimum 0.034
28、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-magnesiumalloy coated, Commercial Steel Type B, ASTM A1046M-_, coating designation ZMM275, not chemically treated, oiled, minimum 0.85 by 900 mmby coil, 1200-mm maximum OD, 610-mm
29、ID, 9,000-kg maximum, for building panels.6. Chemical Composition6.1 Base Metal:6.1.1 The heat analysis of the base metal shall conform to the 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 l
30、isted in Tables 2 and 3 shall be included in the report of heat analysis. When the amount of copper,nickel, chromium, or molybdenum is less than 0.02 %, report the analysis as either 0.02 % or the actual determined value. Whenthe amount of vanadium, titanium or columbium is less than 0.008 %, report
31、 the analysis as either 0.008 % or the actualdetermined value.6.1.3 See Specification A924/A924M for chemical analysis procedures and product analysis tolerances.6.2 Coating Bath CompositionThe bath metal used for zinc-aluminum-magnesium alloycoated sheet shall contain 0.5 to13 % aluminum, 0.4 to 4
32、% magnesium, up to 1 % total additional alloying elements (except iron) and the balance zinc.FourFive types are available, as follows (see Annex A1 for a visual representation):Type 1: 5 to 13 % aluminum, 2 to 4% magnesiumType 2: 3 to less than 5% aluminum, 2 to 4% magnesiumType 3: 3 to 6% aluminum,
33、 0.4 to less than 2% magnesiumType 4: 0.5 to less than 3% aluminum, 0.4 to less than 2.6 % magnesiumType 5: 0.5 to less than 3% aluminum, 2.6 to 4% magnesium.Due to differences in coating bath chemistry, the properties provided by each type may differ and the user shall specify the typesuitable for
34、the application accordingly.7. Mechanical Properties7.1 Structural steel and high strength low alloy steel shall conform to the mechanical property requirements of Table 4 for thegrade or class or combination thereof, specified.TABLE 2 Chemical RequirementsAComposition, %-Heat Analysis Element, max
35、(unless otherwise shown)Designation C Mn P S Al, min Cu Ni Cr Mo V Cb TiB NCS Type AC,D ,E 0.10 0.60 0.030 0.035 . 0.20 0.20 0.15 0.06 0.008 0.008 0.025 .CS Type BC,F 0.02 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 ,E 0.08 0.60 0.100 0.035 . 0.20 0.20 0.15 0.06 0.
36、008 0.008 0.025 .FS Type AC,G 0.10 0.50 0.020 0.035 . 0.20 0.20 0.15 0.06 0.008 0.008 0.025 .FS Type BC,F 0.02 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,H 0.06 0.50 0.020 0.025 0.01 0.20 0.20 0.15 0.06 0.008 0.008 0.025 .EDDSH,I 0.02 0.40 0.020 0.020 0.01 0.20 0.20 0.1
37、5 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 stee
38、l 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 than or equal to 0.02 %, vanadium
39、, columbium, or titanium, or combinations thereof are permitted to be used as stabilizing elements at theproducers 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
40、 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.A1046/A1046M 17a37.2 The typical mechanical properties for CS (Types A, B, and C), FS (Types A and B), DDS, EDDS ste
41、el sheet designationsare listed in Table 5. These mechanical property values are non-mandatory. They are intended solely to provide the purchaser withas much information as possible to make an informed decision on the steel to be specified. Values outside these ranges are to beexpected.7.3 When base
42、 metal mechanical properties are required, all tests shall be conducted in accordance with the methods specifiedin Specification A924/A924M.7.4 Bending Properties:7.4.1 Minimum Cold Bending RadiiStructural steel sheet is commonly fabricated by cold bending.There are many interrelatedfactors that aff
43、ect the ability of a steel to cold form over a given radius under shop conditions. These factors include: thickness,strength level, degree of restraint, relationship to rolling direction, chemistry and base metal microstructure. Appendix X1 lists thesuggested minimum inside radius for 90 cold bendin
44、g for these steel sheets. They pre-suppose “hard way” bending (bend axisparallel to rolling direction) and reasonably good shop forming practices. Where possible, the use of larger radii or “easy way”bending is recommended for improved performance.7.4.2 Fabricators should be aware that cracks may in
45、itiate upon bending a sheared edge or cold-worked edge. This is notconsidered to be a fault of the steel, but is rather a function of the induced localized cold-work zone.8. Coating Properties8.1 Coating Weight Mass:8.1.1 Coating weight mass shall conform to the requirements as shown in Table 1 for
46、the specific coating designation.8.1.2 Use the relationships in Table 6 to estimate the coating thickness from the coating weight mass.8.1.3 Use the following relationship to convert coating weight to coating mass:8.1.3.1 1.00 oz/ft2 coating weight = 305 g/m2 coating mass.8.2 Coating Weight Mass Tes
47、ts:8.2.1 Coating weight mass tests shall be performed in accordance with the requirements stated in Specification A924/A924M.8.2.2 The referee method to be used shall be the dilute hydrochloric acid method, in Test Method A90/A90MTABLE 3 Chemical RequirementsAComposition, %-Heat Analysis Element, ma
48、x (unless otherwise shown)Designation C Mn P S Cu Ni Cr Mo VB CbB TiB,C ,D NSS Grade33 230 0.20 1.35 0.04 0.040 0.20 0.20 0.15 0.06 0.008 0.008 0.025 .37 255 0.20 1.35 0.10 0.040 0.20 0.20 0.15 0.06 0.008 0.008 0.025 .40 275 0.25 1.35 0.10 0.040 0.20 0.20 0.15 0.06 0.008 0.008 0.025 .50 340 Class 1,
49、2 and 4 0.25 1.35 0.20 0.040 0.20 0.20 0.15 0.06 0.008 0.008 0.025 .50 340 Class 3 0.25 1.35 0.04 0.040 0.20 0.20 0.15 0.06 0.008 0.008 0.025 .55 380 0.25 1.35 0.04 0.040 0.20 0.20 0.15 0.06 0.008 0.008 0.025 .60 410 0.25 1.35 0.04 0.040 0.20 0.20 0.15 0.06 0.008 0.008 0.025 .70 480 0.25 1.35 0.04 0.040 0.20 0.20 0.15 0.06 0.008 0.008 0.025 .80 550 0.20 1.35 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
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