1、Designation: A1046/A1046M 14A1046/A1046M 16Standard 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, i
2、n 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 coi
3、ls 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 sp
4、ecification 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 be
6、 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 sta
7、ndard to establish appropriate safety and health practices and determine the applicability of regulatorylimitations prior to use.2. Referenced Documents2.1 ASTM Standards:2A90/A90M Test Method for Weight Mass of Coating on Iron and Steel Articles with Zinc or Zinc-Alloy CoatingsA568/A568M Specificat
8、ion 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, Metallic-Coated by the Hot-Dip ProcessE517 Test Met
9、hod 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 metallic-coated hot-dip products.4. Classification4.1 The
10、 material is available in several designations as follows:4.1.1 Commercial SteelCS Types A, B, and C,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 e
11、dition approved May 1, 2014Nov. 1, 2016. Published May 2014November 2016. Originally approved in 2006. Last previous edition approved in 20102014 asA1046/A1046M - 10aA1046/A1046M - 14.1. DOI: 10.1520/A1046_A1046M-14.10.1520/A1046_A1046M-16.2 For referencedASTM standards, visit theASTM website, www.a
12、stm.org, or contactASTM Customer Service at serviceastm.org. For Annual 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
13、changes have been made to the previous version. Becauseit may not be technically 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 o
14、fficial document.*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 States14.1.2 Deep Drawing SteelDDS,4.1.3 Extra Deep Drawing SteelEDDS,4.1.4 Forming SteelFS Types A and B,4.1.5
15、 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 properties. StructuralSteel Grade 50 340 is available in four c
16、lasses 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 lengths is produced to thickness requirements expressed
17、to 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 product (steel sheet, zinc-aluminum-magnesium alloy-coa
18、ted),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.5.2.3 When an SS or HSLAS designation is specified, state t
19、he 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 Chemically treated or not chemically treated,5.2.7 Oiled or not oiled,5.2.8 Dimensions (show thickness, mimimummini
20、mum or nominal, width, flatness requirements (if appropriate), and length (ifcut length).TABLE 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.
21、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 75ZMM12
22、0 120 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 character
23、istic 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
24、on either surface.A1046/A1046M 1625.2.9 Coil size requirements (specify maximum outside diameter (OD), acceptable inside diameter (ID), and maximum weightmass),5.2.10 Packaging,5.2.11 Certification, if required, and heat analysis and mechanical property report,5.2.12 Application (show part identific
25、ation and description), and5.2.13 Special requirements (if any).5.2.13.1 When the purchaser requires thickness tolerances for 38-in. 10-mm minimum edge distance (see SupplementaryRequirement in specification A924/A924M), this requirement shall be specified in the purchase order or contract.NOTE 1Typ
26、ical 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 by 48 in. by coil, 60-in. maximum OD, 24-in. ID, 10,000-lb maximum, for inner door panel, or steel sheet
27、, 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 ID, 9,000-kg maximum, for building panels.6. Chemical Composition6.1 Base Metal:6.1.1 The heat analysis
28、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 listed in Tables 2 and 3 shall be included in the report of heat analysis. When the amount of copper,nick
29、el, 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 the analysis as either 0.008 % or the actualdetermined value.6.1.3 See Specification A924/A924M for che
30、mical analysis procedures and product analysis tolerances.6.2 Coating Bath CompositionThe bath metal used for zinc-aluminum-magnesium alloycoated sheet shall contain 5 to 13 %aluminum, 2 to 4 % magnesium, up to 1 % total additional alloying elements (except iron) and the balance zinc.7. Mechanical P
31、roperties7.1 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.7.2 The typical mechanical properties for CS (Types A, B, and C), FS (Types A and B), DDS, EDDS steel sheet designa
32、tionsare 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 metal mechanica
33、l 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 affect the ability
34、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 bending for these stee
35、l sheets. They pre-suppose “hard way” bending (bend axisTABLE 2 Chemical RequirementsAComposition, %-Heat Analysis Element, max (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
36、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 0.008 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.
37、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 0.15 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 % car
38、bon, 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 deg
39、assed or chemically stabilized steel, or both, at the producers 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 elements at theproducers option. In such cases, the applicable limit for vanadium
40、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 stabi
41、lized steel.A1046/A1046M 163parallel 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 initiate upon bending a sheared edge or cold-w
42、orked 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 the specific coating designation.8.1.2 Use t
43、he following relationships to estimate the coating thickness from the coating weight mass:8.1.2.1 For product coated with bath Al content from 5 to 9 %, 1.00 oz/ft2 coating weight = 2.00 mils coating thickness,8.1.2.2 6.01 g/m2 coating mass = 1.00 m coating thickness,8.1.2.3 For product coated with
44、bath Al content from 9 to 13 %, 1.00 oz/ft2 coating weight = 2.10 mils coating thickness, and8.1.2.4 5.70 g/m2 coating mass = 1.00 m coating thickness.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
45、 Weight Mass Tests: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/A90M8.3 Coating Bend TestThe coating bend test specimens s
46、hall be capable of being bent through 180 in any direction withoutflaking of the coating on the outside of the bend only. The coating bend test inside diameter shall have a relation to the thicknessof the specimen as shown in Table 6. Flaking of the coating within 0.25 in. 6 mm of the edge of the be
47、nd specimen shall notbe cause for rejection.TABLE 3 Chemical RequirementsAComposition, %-Heat Analysis Element, max (unless otherwise shown)Designation C Mn P S Cu Ni Cr Mo VB CbB TiB,C ,D NSS Grade33 230 0.20 . 0.04 0.040 0.20 0.20 0.15 0.06 0.008 0.008 0.025 .33 230 0.20 1.35 0.04 0.040 0.20 0.20
48、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 .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 . 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 Cl
49、ass 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 1,2 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 .50 340 Class 3 0.25 . 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 .
