1、Designation: A 1003/A 1003M 08Standard Specification forSteel Sheet, Carbon, Metallic- and Nonmetallic-Coated forCold-Formed Framing Members1This standard is issued under the fixed designation A 1003/A 1003M; 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 coated steel sheet used in themanufacture of cold-for
3、med framing members, such as, but notlimited to, studs, joists, purlins, girts, and track.1.2 The steel sheet used for cold-formed framing membersincludes metallic-coated, painted metallic-coated, or paintednonmetallic-coated.1.3 The values stated in either inch-pound or SI units shallbe regarded se
4、parately as standard. Within the text, SI units areshown in brackets. The values stated in each system are notexact equivalents; therefore, each system shall be used inde-pendently of the other.1.4 Unless the order specifies the “M” designation SIunits, the product shall be furnished to inch-pound u
5、nits.1.5 The text of this specification references notes andfootnotes, which provide explanatory material. These notes andfootnotes, excluding those in tables and figures, shall not beconsidered as requirements of this specification.2. Referenced Documents2.1 ASTM Standards:2A 463/A 463M Specificati
6、on for Steel Sheet, Aluminum-Coated, by the Hot-Dip ProcessA 568/A 568M Specification for Steel, Sheet, Carbon,Structural, 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 (G
7、alvannealed)by the Hot-Dip ProcessA 755/A 755M Specification for Steel Sheet, MetallicCoated by the Hot-Dip Process and Prepainted by theCoil-Coating Process for Exterior Exposed Building Prod-uctsA 792/A 792M Specification for Steel Sheet, 55 %Aluminum-Zinc Alloy-Coated by the Hot-Dip ProcessA 875/
8、A 875M Specification for Steel Sheet, Zinc-5 %Aluminum Alloy-Coated by the Hot-Dip ProcessA 879/A 879M Specification for Steel Sheet, Zinc Coatedby the Electrolytic Process for Applications RequiringDesignation of the Coating Mass on Each SurfaceA 902 Terminology Relating to Metallic Coated Steel Pr
9、od-uctsA 924/A 924M Specification for General Requirements forSteel Sheet, Metallic-Coated by the Hot-Dip ProcessA 941 Terminology Relating to Steel, Stainless Steel, Re-lated Alloys, and FerroalloysA 1004/A 1004M Practice for Establishing Conformance tothe Minimum Expected Corrosion Characteristics
10、 of Me-tallic, Painted-Metallic, and Nonmetallic-Coated SteelSheet Intended for Use as Cold Formed Framing MembersC 645 Specification for Nonstructural Steel Framing Mem-bersC 955 Specification for Load-Bearing (Transverse andAxial) Steel Studs, Runners (Tracks), and Bracing orBridging for Screw App
11、lication of Gypsum Panel Productsand Metal Plaster BasesD 714 Test Method for Evaluating Degree of Blistering ofPaintsD 1005 Test Method for Measurement of Dry-Film Thick-ness of Organic Coatings Using MicrometersD 1654 Test Method for Evaluation of Painted or CoatedSpecimens Subjected to Corrosive
12、EnvironmentsD 4138 Practices for Measurement of Dry Film Thicknessof Protective Coating Systems by Destructive, Cross-Sectioning MeansD 4145 Test Method for Coating Flexibility of PrepaintedSheet2.2 ISO Standard:ISO 9223 Corrosion of Metals and AlloysCorrosivity ofAtmospheres-Classification32.3 AISI
13、 Standard: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, 2008. Published June 2008. Originallyapproved in 2000. Last previous
14、edition approved in 2005 as A 1003/A 1003M - 05.2For 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 standards Document Summary page onthe ASTM website.3Available fr
15、om American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036, http:/www.ansi.org.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.Speci
16、fication for the Design of Cold-Formed Steel StructuralMembers43. Terminology3.1 DefinitionsSee Terminology A 902 for definitions ofgeneral terminology relating to metallic-coated steel products,and Terminology A 941 for definitions of general terminologyrelating to uncoated steel sheet products.3.2
17、 Definitions of Terms Specific to This Standard:3.2.1 coating sequence, nthe unbroken or uninterruptedmanufacture of coils of the same coating designation.3.2.2 coil coater, nthe organization that applies paint filmcoatings to coils of steel sheet on continuous paint lines.3.2.3 producer, nthe organ
18、ization that produces the steelsheet coil product from which the cold-formed members arefabricated.3.2.4 purlins and girts, nhorizontal structural membersthat support roof deck or panel covering with loads appliedprincipally by bending.3.2.5 resample, nadditional tests made when the originaltest res
19、ults do not satisfy the specification requirements.3.2.6 retest, nadditional test, or tests, made when theoriginal test results do not satisfy the specification require-ments and the failure is due to a mechanical condition of thetest specimen.3.2.7 roll former, nthe organization that produces theco
20、ld-formed members.3.2.8 zinc-iron alloy, na dull grey coating with no spanglepattern that is produced on hot-dip zinc-coated steel sheet.3.2.8.1 DiscussionZinc-iron alloy-coating is normallydull gray in appearance when produced by the manufacture ofthe coated sheet. Typically, the coating contains b
21、etween 8 and12 % iron, which is the result of a diffusion reaction betweenthe steel sheet and the zinc coating during the coating process.In most applications, this product is intended to be painted. Thecoating offers excellent paint adhesion. When the product isexposed to the environment without a
22、paint coating, there is atendency for the development of a rust-colored stain on thesurface. This is caused by the presence of iron in the coating.This stain may be aesthetically objectionable to some users ofcold formed framing members.3.2.9 aluminum coating type 1, na coating of aluminumand silico
23、n alloy on steel sheet.3.2.9.1 DiscussionAluminum-coated steel sheet type 1provides protection from corrosion primarily through thebarrier action of the coating. The aluminum-silicon alloycoating provides galvanic corrosion only in marine environ-ments. Because this coating does not generally provid
24、e gal-vanic protection, rust staining may be evident at area where thebase metal is exposed to the environment, such as at punch-outs, cut or sheared edges of members, and at scratches.3.2.10 aluminum coating type 2, na coating of commer-cially pure aluminum on steel sheet.3.2.10.1 DiscussionAluminu
25、m-coated steel sheet type 2provides protection from corrosion primarily through thebarrier action of the coating. The aluminum coating providesgalvanic corrosion only in marine environments. Because thiscoating does not generally provide galvanic protection, ruststaining may be evident at areas wher
26、e the base metal isexposed to the environment such as at punch-outs, cut orsheared edges of members, and at scratches.3.3 Suffxes:H, adjhigh ductility.L, adjlow ductility.NS, adjnonstructural.3.3.1 These designations are associated with aspects of theend uses of the steel products; H and L are assoc
27、iated withstructural or load-bearing applications, and NS with nonstruc-tural or nonload-bearing applications.4. Classification4.1 The steel sheet is available in the following designa-tions:4.1.1 Structural Grade 50 Type H (ST50H), StructuralGrade 340 Type H ST340H.4.1.2 Structural Grade 40 Type H
28、(ST40H), StructuralGrade 275 Type H ST275H.4.1.3 Structural Grade 37 Type H (ST37H), StructuralGrade 255 Type H ST255H.4.1.4 Structural Grade 33 Type H (ST33H), StructuralGrade 230 Type H ST230H.4.1.5 Structural Grade 50 Type L (ST50L), Structural Grade340 Type L ST340L.4.1.6 Structural Grade 40 Typ
29、e L (ST40L), Structural Grade275 Type L ST275L.4.1.7 Structural Grade 37 Type L (ST37L), Structural Grade255 Type L ST255L.4.1.8 Structural Grade 33 Type L (ST33L), Structural Grade230 Type L ST230L.4.1.9 Nonstructural Grade 33 (NS33), Nonstructural Grade230 NS230).NOTE 1Abbreviated designations are
30、 shown in parenthesis or brack-ets.4.2 Use of Type L steels is limited to purlins and girts (see3.2.4).5. Ordering Information5.1 Steel sheet in coils or cut lengths shall be ordered tobase metal thickness requirements expressed in increments of0.0001 in. 0.001 mm.5.2 Orders for product to this spec
31、ification shall include thefollowing information, as necessary to adequately describe thedesired product.5.2.1 ASTM specification number and year of issue (A 1003 _ for inch-pound units and A 1003M _ for SI units),5.2.2 Name of the material (metallic-coated steel sheet),(painted metallic-coated stee
32、l sheet), or (painted nonmetallic-coated steel sheet), and designation (see 4.1).5.2.2.1 See Specification A 755/A 755M for additional or-dering requirements for the painted-metallic-coated steel sheet.4Available from American Iron and Steel Institute (AISI), 1140 ConnecticutAve., NW, Suite 705, Was
33、hington, DC 20036, http:/www.steel.org.A 1003/A 1003M 0825.2.3 Type of coating (metallic-coated; zinc, zinc-iron alloy,55 % aluminum-zinc alloy, zinc-5 % aluminum alloy,aluminum-coated Type 1, and aluminum-coated Type 2, elec-trolytic zinc-coated), (painted-metallic-coated; metallic-coating and nonm
34、etallic-coating type), (painted nonmetalliccoated: nonmetallic-coating type).5.2.3.1 Metallic coating weight mass designation (seeTable 1), (see 9.1).5.2.3.2 Nonmetallic coating thickness (see 9.2 or 9.3).5.2.4 Chemically-treated or not chemically-treated(metallic-coated only).5.2.5 Oiled or not-oil
35、ed,5.2.6 Dimensions (show thickness, width, and flatness re-quirements and length, if cut lengths). Specify the applicabletable of thickness tolerances of A 568/A 568M for bothmetallic-coated and nonmetallic-coated sheet that applies to theorder, that is, the table of thickness tolerances for38-in.1
36、0-mm edge distance, or the table of thickness tolerances for1-in. 25-mm edge distance.5.2.7 Coil size requirements (specify maximum outsidediameter (OD) acceptable inside diameter (ID), and maximumweight mass.5.2.8 Packaging (specify requirements for banding, paperwrapping and other special packagin
37、g requirements).5.2.9 Certification, if required (heat analysis, metallic coat-ing weight or nonmetallic coating thickness and mechanicalproperties report).5.2.10 Special Requirements, if any.NOTE 2Typical ordering descriptions are as follows: Steel sheet,zinc-coated, Structural Grade 50 Type H (ST5
38、0H), ASTM A 1003,Coating Designation G60, chemically-treated, not oiled, 0.035 by 48 in.by coil, thickness tolerance Table 2, 24-in ID, 30 000 lb maximum forsteel studs, orSteel sheet, zinc-coated, Structural Grade 230 Type L ST230L, ASTMA 1003M, Coating Designation Z180, chemically-treated, not oil
39、ed, 1.00mm by 920 mm by coil, thickness tolerance Table 2, 600 mm ID, 10 000kg maximum for purlins.NOTE 3Electrolytic zinc-coated steel sheet designations indicate thecoating on one surface only; therefore, the coating requirement must bespecified for each side of the steel sheet as indicated in Tab
40、le 1. Also, theelectrolytic zinc-coated steel sheet is only available in SI values.6. Materials and Manufacture6.1 The ordered thickness shall be the base metal thickness.NOTE 4This requirement differs from the normal ordering practice forhot dip metallic-coated products where the ordered thickness
41、includes thebase metal and the coating but is similar to the ordering practice for heavycoating mass electrolytic coated product.7. Chemical Composition7.1 Base Metal:7.1.1 The chemical composition of the steel sheet shallconform to the requirements of Table 3.7.1.2 All tests shall be conducted in a
42、ccordance with therequirements for chemical composition as described in Speci-fication A 924/A 924M for products with metallic coatings andSpecification A 568/A 568M for nonmetallic coated products.TABLE 1 Coating Weight Mass Requirements(Metallic Coatings)ProductDesignationCoating DesignationType H
43、 andType LG60 Z180AA60 Z180BAZ50 AZ150CGF30 ZGF90DT125 T1M 75ET2100 T2M 300E90G/90GFType NS G40 Z120AA40 Z120BAZ50 AZ150CGF30 ZGF90DT125 T1M 75ET2100 T2M 300E60G/60GFAZinc-coated steel sheet as described in Specification A 653/A 653M.BZinc-iron alloy-coated steel sheet as described in Specification
44、A 653/A 653M.C55 % aluminum-zinc alloy-coated as described in Specification A 792/A 792M.DZinc-5 % aluminum alloy-coated steel sheet as described in SpecificationA 875/A 875M.EAluminum-coated Type 1 and Type 2 steel sheet as described in SpecificationA 463/A 463M.FZinc-coated steel sheet as describe
45、d in Specification A 879/A 879MTABLE 2 Mechanical Properties, Base MetalNOTE 1All values are minimum requirements in the longitudinaldirection.DesignationYieldStrength,ksi MPaTensileStrengthksi MPaElongationAin12 in. 13 mmElongation in2 in. 50 mmST50H ST340H 50 340B65 450C10 %ST40H ST275H 40 275B55
46、380C10 %ST37H ST255H 37 255B52 360C10 %ST33H ST255H 33 230B45 310C10 %ST50L ST340LD50 340 20 %E3%FST40L ST275LD40 275 20 %E3%FST37L ST255LD37 255 20 %E3%FST33L ST230LD33 230 20 %E3%FNS 33 33 230 . . .G.GAThe procedure for determining the local and uniform elongation can be foundin the AISI Cold Form
47、ed Design Manual, “Standard Methods for Determination ofUniform and Local Ductility.”BRatio of tensile strength to yield strength for the Type H steels shall not be lessthan 1.08.CElongation in12-in. 13-mm is not required.DThe use of Type L steels shall be limited to purlins and girts (see 3.2.4).EL
48、ocal elongation in a12-in. 13-mm gage length across the fracture.FUniform elongation outside of the fracture.GWhere an ellipsis appears there is no requirement.TABLE 3 Chemical Composition Heat and Product Analysis,Max %Element Heat Analysis Product AnalysisCarbon 0.25AManganese 1.15APhosphorus 0.20
49、ASulfur 0.04ACopper 0.20B0.23Nickel 0.20B0.23Chromium 0.15B,C0.19Molybdenum 0.06B0.07Vanadium 0.008D0.018DColumbium 0.008D0.018DTitanium 0.008D0.018DAProduct analysis tolerances for these elements are found in Table 1 ofSpecification A 924/A 924M.BThe sum of copper, chromium, nickel, and molybdenum shall not exceed0.50 %. When one or more of these elements are specified, the sum does notapply. If this occurs, only the individual lim
