ASTM_A_653-A653M-04a.pdf

Designation:A 653/A 653M-04aTERStandard Specification forSteel Sheet,Zinc-Coated(Galvanized)or Zinc-lron Alloy-Coated(Galvannealed)by the Hot-Dip Process1This standard is issued under the fixed designation A 653/A 653M;the number immediately following the designation indicates the yearof original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.A superscript epsilon(e)indicates an editorial change since the last revision or reapproval.1.Scope*2.Referenced Documents1.1 This specification covers steel sheet,zinc-coated(gal-2.1 ASTM Standards:2vanized)or zinc-iron alloy-coated(galvannealed)by the hot-A 90/A 90M Test Method for Weight Massof Coating ondip process in coils and cut lengths.Iron and Steel Articles with Zinc or Zinc-Alloy Coatings1.2 The product is produced in various zinc or zinc-ironA 370 Test Methods and Definitions for Mechanical Testingalloy-coating weights masses or coating designations asof Steel Productsshown in Table 1.A 568/A 568M Specification for Steel.Sheet,Carbon.and1.3 Product furnished under this specification shall conformHigh-Strength,Low-Alloy,Hot-Rolled and Cold-Rolled,to the applicable requirements of the latest issue of Specifica-General Requirements fortion A 924/A 924M.unless otherwise provided herein.A 902 Terminology Relating to Metallic Coated Steel Prod-1.4 The product is available in a number of designations,uctstypes,grades and classes in three general categories that areA 924/A 924M Specification for General Requirements fordesigned to be compatible with different application require-Steel Sheet,Metallic-Coated by the Hot-Dip Processments.D 2092 Guide for Treatment of Zinc-Coated(Galvanized)1.4.1 Steels with mandatory chemical requirements andSteel Surfaces for Paintingtypical mechanical properties.E 517 Test Method for Plastic Strain Ratio r for Sheet Metal1.4.2 Steels with mandatory chemical requirements andE 646 Test Method for Tensile Strain-Hardening Exponentsmandatory mechanical properties.(n values)of Metallic Sheet Materials1.4.3 Steels with mandatory chemical requirements and2.2 ISO Standard:mandatory mechanical properties that are achieved throughISO 3575 Continuous Hot-Dip Zinc-Coated Carbon Steel ofsolid-solution or bake hardening.Commercial and Drawing Qualities31.5 This specification is applicable to orders in eitherISO 4998 Continuous Hot-Dip Zinc-Coated Carbon Steel ofinch-pound units(as A 653)or SI units(as A 653M).Values inStructural Qualityinch-pound and SI units are not necessarily equivalent.Withinthe text,SI units are shown in brackets.Each system shall be3.Terminologyused independently of the other.3.1 Definitions-See Terminology A 902 for definitions of1.6 Unless the order specifies the Mdesignation(SIgeneral terminology relating to metallic-coated hot-dip prod-units).the product shall be furnished to inch-pound units.ucts.1.7 The text of this specification references notes and3.2 Definitions of Terms Specific to This Standard:footnotes that provide explanatory material.These notes and3.2.1 bake hardenable steel,n-steel sheet in which afootnotes,excluding those in tables and figures,shall not besignificant increase in yield strength is realized when moderateconsidered as requirements of this specification.heat treatment,such as that used for paint baking,follows1.8 This standard does not purport to address all of thestraining or cold working.safety concerns,if any,associated with its use.It is the3.2.2 differentially coated,n-galvanized steel sheet havingresponsibility of the user of this standard to establish appro-a specified coating designationon one surface and a signifi-priate safety and health practices and determine the applica-cantly lighter specified coating designationon the otherbility of regulatory limitations prior to usesurface.2 For referenced ASTM standards,visit the ASTM website,www.astm.org,orThis specification is under the jurisdiction of ASTM Committee A05 oncontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMMetallic-Coated Iron and Steel Products and is the direct responsibility ofSrandards volume information,refer to the standards Document Summary page onSubcommittee A05.11 on Sheet Specifications.the ASTM website.Current edition approved May 1.2004.Published May 2004.Originally3 Available from American National Standards Institute(ANSI).25 W.43rd St.,approved in 1994.Last previous edition approved in 2004 as A653/A 653M-04.4th Floor.New York.NY 10036.*A Summary of Changes section appears at the end of this standard.Copyright ASTM Intemnational,100 Barr Harbor Drive.PO Box C700,West Conshohocken,PA 19428-2959.United States.46A653/A653M-04aTABLE 1 Weight Massof Coating Requirements4&cNorE 1-Use the information provided in 8.1.2 to obtain the approximate coating thickness from the coating weight mass.Minimum RequirementTriple-Spot TestSingle-Spot TestInch-Pound UnitsTypeCoating DesignationTotal Both Sides,oz/ft?One SideTotal Both Sides,oz/ft2ZincG3603.601283.20G3003.001.042.60G2352.350.802.00G2102.100.721.80G1851.850.641.60G1651650.561.40G1401.400.481.20G1151.150.401.00G900.900.320.80G600.600.200.50G400400.120.30G300.300.100.25G01no minimumno minimumno minimumZinc-iron alloyA600.600.200.50A400.400.120.30A250.250.080.20A01no minimumno minimumno minimumSI UnitsTypeCoating DesignationTotal Both Sides,g/mOne SideTotal Both Sides,g/m2ZincZ11001100390975Z900900316790Z700700238595Z600600204510Z550550190475Z500500170425Z450450154385Z350350120300Z27527594235Z18018060150Z120120690Z90903075Z001no minimumno minimumno minimumZinc-iron alloyZF18018060150ZF120120360ZF75752460ZF001no minimumno minimumno minimumAThe 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 coating lines,the zinc or zinc-iron alloy coating is not always evenly divided between the two surfaces of a coated sheet;nor is it always evenlydistributed from edge to edge.However,the minimum triple-spot average coating weight(mass)on any one side shall not be less than 40%of the single-spot requirement.BAs it is an established fact that the atmospheric corrosion resistance of zinc or zinc-iron alloy-coated sheet products is a direct function of coating thickness(weight(mass),the selection of thinner(lighter)coating designations will result in almost linearly reduced corrosion performance of the coating.For example,heavier galvanizedcoatings perform adequately in bold atmospheric exposure whereas the lighter coatings are often further coated with paint or a similar barrier coating for increasedcorrosion resistance.Because of this relationship.products carrying the statementmeets ASTMA 653/A 653M requirementsshould also specify the particular coatingdesignation.CInternational Standard,ISO 3575,continuous hot-dip zinc-coated carbon steel sheet contains Z100 and Z200 designations and does not specify a ZF75 coating.No minimum means that there are no established minimum requirements for triple-and single-spot tests.3.2.2.1 Discussion-The single side relationship of either3.2.4.1 Discussion-Suppliers use one or a combination ofspecified coating designationis the same as shown in themicroalloying elements as strengthening agents and also treatnote of Table 1 regarding uniformity of coating.the steel with additional small alloy additions to effect sulfide3.2.3 high strength low alloy steel,Type A sheet,n-steelinclusion control.sheet intended for applications where mechanical properties3.2.5 minimized spangle,n-the finish produced on hot-dipare specified and where improved formability is requiredzinc-coated steel sheet in which the grain pattern is visible tocompared to structural steel.the unaided eye,and is typically smaller and less distinct than3.2.3.1 Discussion-Suppliers use one or a combination ofthe pattern visible on regular spangle.microalloying elements as strengthening agents.3.2.5.1 Discussion-This finish is produced by one of two3.2.4 high strength low alloy steel,Type B sheet,n-steelmethods:either(1)the zinc crystal growth has been started butsheet intended for applications where mechanical propertiesarrested by special production practices during solidification ofare specified and where improved formability is requiredthe zinc,or(2)the zinc crystal growth is inhibited by acompared to high strength low alloy steel,Type A.combination of coating-bath chemistry plus cooling during24A653/A653M-04asolidification of the zinc.Minimized spangle is normally5.Ordering Informationproduced in coating designations G90 Z275and lighter.5.1 Zinc-coated or zinc-iron alloy-coated sheet in coils and3.2.6 regular spangle,n-the finish produced on hot-dipcut lengths is produced to thickness requirements expressed tozinc-coated steel sheet in which there is a visible multifaceted0.001 in.0.01 mm.The thickness of the sheet includes bothzinc crystal structure.the base metal and the coating3.2.6.1 Discussion-Solidification of the zinc coating is5.2 Orders for product to this specification shall include thetypically uncontrolled,which produces the variable grain sizefollowing information,as necessary,to adequately describe theassociated with this finish.desired product:3.2.7 spangle-free,n-the uniform finish produced on hot-5.2.1 Name of product(steel sheet,zinc-coated(galvanized)dip zinc-coated steel sheet in which the visual spangle pattern,or zinc-iron alloy-coated(galvannealed).especially the surface irregularities created by spangle forma-tion,is not visible to the unaided eye.5.2.2 Designation of sheet CS(Types A,B,and C),FS(Types A and B),DDS,EDDS,SS,or HSLAS(Types A and B),3.2.7.1 Discussion-This finish is produced when the zincSHS,or BHScrystal growth is inhibited by a combination of coating-bath5.2.2.1 When a CS type is not specified,CS Type B will bechemistry,or cooling,or both during solidification of the zinc.furnished.When an FS type is not specified,FS Type B will be3.2.8 solid-solution hardened steel or solution hardenedfurnished.steel,n-steel sheet strengthened through additions of substi-5.2.3 When an SS,HSLAS,SHS,or BHS designation istutional alloying elements such as Mn,P,or Si.specified,state the type,grade,or class,or combination3.2.8.1 Discussion-Substitutional alloying elements suchthereof.as Mn,P,and Si can occupy the same sites as iron atoms within5.2.4 ASTM designation number and year of issue,as A 653the crystalline structure of steels.Strengthening arises as afor inch-pound units or A 653M for SI units.result of the mismatch between the atomic sizes of these5.2.5 Coating designation,elements and that of iron.5.2.6 Chemically treated or not chemically treated,3.2.9 zinc-iron alloy,n-a dull grey coating with no spangle5.2.7 Oiled or not oiled,pattern that is produced on hot-dip zinc-coated steel sheet.3.2.9.1 Discussion-Zinc-iron alloy coating is composed5.2.8 Minimized spangle(if required),entirely of inter-metallic alloys.It is typically produced by5.2.9 Extra smooth(if required),subjecting the hot-dip zinc-coated steel sheet to a thermal5.2.10 Phosphatized(if required),treatment after it emerges from the molten zinc bath.This type5.2.11 Dimensions(show thickness,minimum or nominal,of coating is suitable for immediate painting without furtherwidth,flatness requirements,and length,if cut lengths).Thetreatment except normal cleaning(refer to Guide D 2092).Thepurchaser shall specify the appropriate table of thicknesslack of ductility of the alloy coating presents a potential fortolerances in Specification A 924/A 924M that applies to thepowdering,etc.order,that is,the table of thickness tolerances for%-in10-mmedge distance,or the table of thickness tolerances for4.Classification1-in.25-mmedge distance.4.1 The material is available in several designations as5.2.12 Coil size requirements(specify maximum outsidefollows:diameter(OD),acceptable inside diameter(ID),and maximumweight mass),4.1.1 Commercial steel(CS Types A,B,and C).5.2.13 Packaging.4.1.2 Forming steel(FS Types A and B),4.1.3 Deep drawing steel(DDS).5.2.14 Certification,if required,heat analysis and mechani-cal property report4.1.4 Extra deep drawing steel(EDDS).5.2.15 Application(part identification and description),and4.1.5 Structural steel(SS).5.2.16 Special requirements(if any).4.1.6 High strength low alloy steel(HSLAS Type A),5.2.16.1 If required,the product may be ordered to a4.1.7 High strength low alloy steel(HSLAS Type B)specified base metal thickness(see Supplementary Require-4.1.8 Solution hardened steel(SHS),andment S1.)4.1.9 Bake hardenable steel(BHS)4.2 Structural steel,high strength low alloy steel.solutionNorE 1-Typical ordering descriptions are as follows:steel sheet.zinc-coated,commercial steel Type A.ASTM A 653.Coating Designationhardened steel,and bake hardenable steel are available inG 115,chemically treated,oiled,minimum 0.040 by 34 by 117 in.,forseveral grades based on mechanical properties.Structural Steelstock tanks,or steel sheet,zinc-coated,high strength low alloy steel TypeGrade 50 340is available in four classes based on tensileA Grade 340,ASTM A653M,Coating Designation Z275,minimizedstrength.spangle,not chemically treated,oiled,minimum 1.00 by 920 mm by coil,4.3 The material is available as either zinc-coated or zinc-520-mm maximum OD.600-mm ID,10 000-kg maximum,for tractorinner fender.iron alloy-coated in several coating weights massesorcoating designations as shown in Table 1,andNorE 2-The purchaser should be aware that there are variations inmanufacturing practices among the producers and therefore is advised to4.3.1 The material is available with the same or differentestablish the producers standard(or default)procedures for thicknesscoating designations on each surface.tolerances.46A653/A653M-04aTABLE 3 Chemical RequirementsAComposition,%Heat Analysis Element,maxDesignation(unless otherwise shown)CarbonManganese PhosphorusSulfurAl,min.CuNQMoCbe TiC.B.D NSS Grade332300.200.040.040.200.200.150.060.0080.0080.025372550.20年年80.100.040.200.200.150.060.0080.0080.025402750.250.100.040.200.200.150.060.0080.0080.02550 340Class 1,2,and 40.250.200.040.200.200.150.060.0080.0080.025503401 Class30.250.040.040.200.200.150.060.0080.0080.025805500.200.040.040.200.200.150.060.0080.0150.025HSLAS Type A402750.201.200.0350.200.150.160.01min0.0050.01minmin503400.201.200.0350.200.200.150.160.01 min0.0050.01minmin604100.201.350.0350.200.200.150.160.01 min00050.01minmin704800.201.650.0350.200.200.150.160.01 min0.0050.01minmin8055010.201.650.0350.200.200.150.160.01 min0.0050.01minminHSLAS Type BEF40275)0.151.200.0350.200.150.160.01 min0.0050.01minmin503400.151.200.0350.200.200.150.160.01 min0.0050.01minmin604100.151.200.0350.200.200.150.160.01 min0.0050.01minmin704800.151.650.0350.200.200.150.160.01 min0.0050.01minmin8055010.151.650.0350.200.200.150.160.01min0.0050.01minminSHS0.121.500.120.0300.200.200.150.060.0080.0080.025BHS0.121.500.120.0300.200.200.150.060.0080.0080.025AWhere an ellipsis(.appears in this table there is no requirement,but the analysis shall be reported.For 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 and columbium shall be 0.10%max.,and the limit for titanium shall be 0.15%max.OTitanium is permitted for SS steels to 0.025%provided the ratio of titanium to nitrogen does not exceed 3.4.For 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.HSLAS 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 Type B steels by means of small alloy additions to effect sulfide inclusion control.any direction without flaking of the coating on the outside of10.Keywordsthe bend only.The coating bend test inside diameter shall havea relation to the thickness of the specimen as shown in Table 6.10.1 alloyed coating;bake hardenable steel;high strengthFlaking of the coating within 0.25 in.6 mmof the edge of thelow alloy;minimized spangle coating:sheet steel;solutionbend specimen shall not be cause for rejection.hardened steel;spangle;steel;steel sheet;structural steel;zinc;8.3.2 Because of the characteristics of zinc-iron alloy coat-zinc coated(galvanized);zinc iron-alloy;zinc iron-alloy coatedings designated by prefix AZFas explained in 3.2.3.coating bend tests are not applicable.9.Dimensions and Permissible Variations9.1 All dimensions and permissible variations shall complywith the requirements of Specification A 924/A 924M,exceptfor flatness of SS and HSLAS,which is specified in Table 7 andTable 8,respectively.5