1、Designation: A 1063/A 1063M 09Standard Specification forSteel Sheet, Twin-Roll Cast, Zinc-Coated (Galvanized) by theHot-Dip Process1This standard is issued under the fixed designation A 1063/A 1063M; the number immediately following the designation indicates theyear of original adoption or, in the c
2、ase 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. Scope1.1 This specification covers steel sheet, produced by theTwin-Roll Cast Process (see Appendi
3、x X2) and zinc-coated(galvanized) by the hot-dip process in coils and cut lengths.NOTE 1See Appendix X2 for a description of the Twin-Roll Castprocess.1.2 The product is produced in various zinc coating weightsmasses or coating designations as shown in Table 1.1.3 Product furnished under this specif
4、ication shall conformto the applicable requirements of the latest issue of Specifica-tion A 924/A 924M unless otherwise provided herein.1.4 The product is available in a number of designations,grades and classes and in the two following general categoriesthat are designed to be compatible with diffe
5、rent applicationrequirements.1.4.1 Steels with mandatory chemical requirements andtypical mechanical properties.1.4.2 Steels with mandatory chemical requirements andmandatory mechanical properties.1.5 This material is available in the following sizes:1.5.1 Thicknessup to 0.078 in. 2.0 mm1.5.2 Widthu
6、p to 79 in. 2000 mm1.6 This specification is applicable to orders in eitherinch-pound units (as A 1063) or SI units (as A 1063M). 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 U
7、nless the order specifies the “M” designation (SIunits), the product shall be furnished to inch-pound units.1.8 The text of this specification references notes andfootnotes that provide explanatory material. These notes andfootnotes, excluding those in tables and figures, shall not beconsidered as r
8、equirements of this specification.1.9 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 limita
9、tions 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 370 Test Methods and Definitions for Mechanical Testingof Steel ProductsA 568/A 568M Specification for Steel, Sheet, Carbon,Stru
10、ctural, and High-Strength, Low-Alloy, Hot-Rolled andCold-Rolled, General Requirements forA 653/A 653M Specification for Steel Sheet, Zinc-Coated(Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed)by the Hot-Dip ProcessA 902 Terminology Relating to Metallic Coated Steel Prod-uctsA 924/A 924M Specifi
11、cation for General Requirements forSteel Sheet, Metallic-Coated by the Hot-Dip ProcessA 1039/A 1039M Specification for Steel, Sheet, HotRolled, Carbon, Commercial, Structural, and High-Strength Low-Alloy, Produced by Twin-Roll Casting Pro-cess3. Terminology3.1 DefinitionsSee Terminology A 902 for de
12、finitions ofgeneral terminology relating to metallic-coated hot-dip prod-ucts.3.2 Definitions of Terms Specific to This Standard:3.3 differentially coated, ngalvanized steel sheet having aspecified “coating designation” on one surface and a signifi-cantly lighter specified “coating designation” on t
13、he othersurface.3.3.1 DiscussionThe single side relationship of eitherspecified “coating designation” is the same as shown in thenote of Table 1 regarding uniformity of coating.1This specification is under the jurisdiction of ASTM Committee A05 onMetallic-Coated Iron and Steel Products and is the di
14、rect responsibility ofSubcommittee A05.11 on Sheet Specifications.Current edition approved May 1, 2009. Published June 2009.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, r
15、efer 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.3.4 high strength low alloy steel, na specific group ofsheet steels whose strength is achieved through the use ofmicroallo
16、ying elements such as columbium (niobium), vana-dium, titanium, and molybdenum resulting in improved form-ability and weldability than is obtained from conventionalcarbon-manganese steels.3.5 minimized spangle, nthe finish produced on hot-dipzinc-coated steel sheet in which the grain pattern is visi
17、ble tothe unaided eye, and is typically smaller and less distinct thanthe pattern visible on regular spangle.3.5.1 DiscussionThis finish is produced by one of twomethods: either (1) the zinc crystal growth has been started butarrested by special production practices during solidification ofthe zinc,
18、 or (2) the zinc crystal growth is inhibited by acombination of coating-bath chemistry plus cooling duringsolidification of the zinc. Minimized spangle is normallyproduced in coating designations G90 Z275 and lighter.3.6 regular spangle, nthe finish produced on hot-dipzinc-coated steel sheet in whic
19、h there is a visible multifacetedzinc crystal structure.3.6.1 DiscussionSolidification of the zinc coating is typi-cally uncontrolled, which produces the variable grain sizeassociated with this finish.3.7 spangle-free, nthe uniform finish produced on hot-dipzinc-coated steel sheet in which the visua
20、l spangle pattern,especially the surface irregularities created by spangle forma-tion, is not visible to the unaided eye.3.7.1 DiscussionThis finish is produced when the zinccrystal growth is inhibited by a combination of coating-bathchemistry, or cooling, or both during solidification of the zinc.4
21、. Classification4.1 The material is available in several designations asfollows:4.1.1 Commercial steel (CS Types A, B, and C),4.1.2 Structural steel (SS)4.1.3 High strength low alloy steel (HSLAS)4.2 Structural steel and high-strength low-alloy steel areavailable in several grades based on mechanica
22、l properties.Structural steel Grade 80 is available in two classes andhigh-strength low-alloy grades 45 through 80 are available intwo classes.4.3 The material is available zinc-coated in several coatingweights masses or coating designations as shown in Table 1,andTABLE 1 Weight Mass of Coating Requ
23、irementsA,B,CNOTE 1 Use the information provided in 8.1.2 to obtain the approximate coating thickness from the coating weight mass.Minimum RequirementTriple-Spot Test Single-Spot TestInch-Pound UnitsType Coating Designation Total Both Sides, oz/ft2One Side, oz/ft2Total Both Sides, oz/ft2Zinc G01Cno
24、minimum no minimum no minimumG30 0.30 0.10 0.25G40 0.40 0.12 0.30G60 0.60 0.20 0.50G90 0.90 0.32 0.80G100 1.00 0.36 0.90G115 1.15 0.40 1.00G140 1.40 0.48 1.20G165 1.65 0.56 1.40G185 1.85 0.64 1.60SI UnitsType Coating Designation Total Both Sides, g/m2One Side, g/m2Total Both Sides, g/m2Zinc Z001Cno
25、minimum no minimum no minimumZ90 90 30 75Z120 120 36 90Z180 180 60 150Z275 275 94 235Z305 305 110 275Z350 350 120 300Z450 450 154 385Z500 500 170 425Z550 550 190 475Z600 600 204 510AThe coating designation number is the term by which this product is specified. Because of the many variables and chang
26、ing conditions that are characteristic ofcontinuous hot-dip coating lines, the zinc coating is not always evenly divided between the two surfaces of a coated sheet; nor is it always evenly distributed from edgeto edge. However, the minimum triple-spot average coating weight (mass) on any one side sh
27、all not be less than 40 % of the single-spot requirement.BAs it is an established fact that the atmospheric corrosion resistance of zinc coated sheet products is a direct function of coating thickness (weight (mass), the selectionof thinner (lighter) coating designations will result in almost linear
28、ly reduced corrosion performance of the coating. For example, heavier galvanized coatings performadequately in bold atmospheric exposure whereas the lighter coatings are often further coated with paint or a similar barrier coating for increased corrosion resistance.Because of this relationship, prod
29、ucts carrying the statement “meets ASTM A 1063/A 1063M requirements” should also specify the particular coating designation.CNo minimum means that there are no established minimum requirements for triple- and single-spot tests.A 1063/A 1063M 0924.3.1 The material is available with the same or differ
30、entcoating designations on each surface.5. Ordering Information5.1 Zinc-coated sheet in coils and cut lengths is produced tothickness requirements expressed to 0.001 in. 0.01 mm. Thethickness of the sheet includes both the base metal and thecoating.5.2 Orders for product to this specification shall
31、include thefollowing information, as necessary, to adequately describe thedesired product:5.2.1 Name of product (steel sheet, twin-roll cast, zinc-coated (galvanized),5.2.2 Designation of sheet CS (Types A, B, and C), SS(Limits L or H), and HSLAS (Limits L or H).5.2.2.1 When a CS type is not specifi
32、ed, CS Type B will befurnished.5.2.3 When a SS or HSLAS designation is specified, statethe appropriate grade, or class, or combination thereof.5.2.3.1 When a class for SS Grade 80 is not specified, class1 will be provided5.2.3.2 When a class for HSLAS is not specified, class 1will be provided.5.2.4
33、Specify Limit L or Limit H for Cu, Ni, Cr, and Mo,5.2.4.1 When the limit L or H is not specified, limit H willbe furnished.5.2.5 ASTM designation number and year of issue asA 1063 for inch-pound units or A 1063M for SI units.5.2.6 Coating designation,5.2.7 Chemically treated or not chemically treate
34、d,5.2.8 Oiled or not oiled,5.2.9 Minimized spangle (if required),5.2.10 Extra smooth (if required),5.2.11 Dimensions (show thickness, minimum or nominal,width, flatness requirements, and length, if cut lengths). Thepurchaser shall specify the appropriate table of thicknesstolerances in Specification
35、 A 924/A 924M that applies to theorder, that is, the table of thickness tolerances for38-in.10-mm edge distance, or the table of thickness tolerances for1-in. 25-mm edge distance.5.2.12 Coil size requirements (specify maximum outsidediameter (OD), acceptable inside diameter (ID), and maximumweight m
36、ass),5.2.13 Packaging,5.2.14 Certification, if required, heat analysis and mechani-cal property report,5.2.15 Application (part identification and description), and5.2.16 Special requirements (if any).5.2.17 Supplementary Requirement, please specify.NOTE 2Typical ordering descriptions are as follows
37、: steel sheet,zinc-coated, commercial steel Type A, Limit H, ASTM A 1063, CoatingDesignation G 90, chemically treated, oiled, minimum 0.040 by 34 by 117in., for stock tanks, or steel sheet, zinc-coated, high strength low alloysteel Grade 340, class 1, Limit L, ASTM /A 1063M, Coating DesignationZ275,
38、 minimized spangle, not chemically treated, oiled, minimum 1.00 by920 mm by coil, 1520-mm maximum OD, 600-mm ID, 10 000-kgmaximum, for tractor inner fender.NOTE 3The purchaser should be aware that there are variations inmanufacturing practices among the producers and therefore is advised toestablish
39、 the producers standard (or default) procedures for thicknesstolerances.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),and Table 3 for SS and HSLAS and Table 4 for Cu, Ni, Cr, andMo.6.1.2 Ea
40、ch of the elements listed in Tables 2-4 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
41、.008 %, report the analysis as either 0.008 % orthe actual determined value.6.1.3 See Specification A 924/A 924M for chemical analy-sis procedures and product analysis tolerances.6.2 Zinc Bath AnalysisThe bath metal used in continuoushot-dip galvanizing shall contain not less than 99 % zinc.NOTE 4To
42、 control alloy formation and promote adhesion of the zinccoating with the steel base metal, the molten coating metal compositionnormally contains a percentage of aluminum usually in the range from0.05 to 0.25. This aluminum is purposely supplied to the molten coatingbath, either as a specified ingre
43、dient in the zinc spelter or by the additionof a master allot containing aluminum.7. Mechanical Properties7.1 Structural steel, and high-strength low-alloy steel, shallconform to the mechanical property requirements in Table 5 forTABLE 2 Chemical RequirementsAfor Twin Roll Cast Hot Rolled Steel Shee
44、t Designations CSDesignationComposition, %Heat Analysis Element,Maximum (unless otherwise shown)CMn P SAlB,CSiCCuDNi Cr Mo V Cb Ti NCSEType A0.10 0.70 0.030 0.035 . . . . . . 0.25 0.20 0.15 0.06 0.008 0.008 0.008 . . .CSType B0.02 to0.150.70 0.030 0.035 . . . . . . 0.25 0.20 0.15 0.06 0.008 0.008 0.
45、008 . . .CSType C0.02 to0.150.80 0.030 0.035 . . . . . . 0.50 0.30 0.30 0.15 0.008 0.008 0.008 . . .AWhere an ellipsis (. . .) appears in this table there is no requirement, but the analysis shall be reported.BWhen aluminum deoxidized steel is required, it may be ordered to a minimum of 0.01 % total
46、 aluminum.CTwin-roll cast product shall be deoxidized using either silicon or aluminum.DWhen copper steel is specified, the copper limit is a minimum of 0.20 %.ESpecify Type B or type C to avoid carbon levels below 0.02 %.A 1063/A 1063M 093the grade, or class, or both. The typical ranges of mechanic
47、alproperties (nonmandatory) for CS types A, B, and C are shownin Table 6.8. Coating Properties8.1 Coating Weight Mass:8.1.1 Coating weight mass shall conform to the require-ments as shown in Table 1 for the specific coating designation.8.1.2 Use the following relationships to estimate the coatingthi
48、ckness from the coating weight mass:8.1.2.1 1 oz/ft2coating weight = 1.7 mils coating thickness,and8.1.2.2 7.14 g/m2coating mass = 1 m coating thickness.8.1.2.3 1oz/ft2= 305.15g/m28.2 Coating Weight Mass Tests:TABLE 3 Chemical RequirementsA,Bfor Twin Roll Cast Hot Rolled Steel Sheet Designations SS
49、and HSLASDesignationComposition, %Heat Analysis Element, max(unless otherwise shown)CMn P SAlCSiCVCbTiNSS:DGrade 40 275 0.25 1.35 0.035 0.04 . . . . . . 0.008 0.008 0.008 . . .Grade 50 340 0.25 1.35 0.035 0.04 . . . . . . 0.008 0.008 0.008 . . .Grade 55 380 0.25 1.35 0.035 0.04 . . . . . . 0.008 0.008 0.008 . . .Grade 60 410 0.25 1.35 0.035 0.04 . . . . . . 0.008 0.008 0.008 . . .Grade 70 480 0.25 1.35 0.035 0.04 . . . . . . 0.008 0.008 0.008 . . .Grade 80 550Classes 1 and 20.25 1.35 0.035 0.04 . . . . . . 0.008 0
