ASTM A924 A924M-2009 Standard Specification for General Requirements for Steel Sheet Metallic-Coated by the Hot-Dip Process.pdf
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1、Designation: A 924/A 924M 09Standard Specification forGeneral Requirements for Steel Sheet, Metallic-Coated bythe Hot-Dip Process1This standard is issued under the fixed designationA 924/A 924M; the number immediately following the designation indicates the yearof original adoption or, in the case o
2、f revision, the year of last revision. A number in parentheses indicates the year of last reapproval.A superscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification covers the general requirements that,unless otherwise specified in the pro
3、duct specification, apply tosteel sheet in coils and cut lengths, metallic-coated on continu-ous lines by the hot-dip process. The product is intended forapplications requiring corrosion resistance. The product speci-fications contain requirements for specific strength levels, heatresistance, painta
4、bility, or formability, or a combinationthereof.1.2 Subject to individual product specification provisions,steel sheet is available as Commercial Steel (CS) Types A, B,and C, Forming Steel (FS), Drawing Steel (DS), Deep DrawingSteel (DDS), Extra Deep Drawing Steel (EDDS), High Tem-perature Steel (HT
5、S), Structural Steel (SS), and High StrengthLow Alloy Steel (HSLAS). Steel sheet is produced with thefollowing metallic coatings. Specific information on each ofthe following is contained in the individual product specifica-tion:1.2.1 Zinc or zinc-iron alloy coated,1.2.2 Zinc-5 % aluminum alloy coat
6、ed,1.2.3 55 % aluminumzinc alloy coated,1.2.4 Aluminumcoated,1.2.5 Terne (lead-tin alloy) coated, and1.2.6 Zinc-aluminum-magnesium alloy coated.1.3 Products covered by this general requirements specifi-cation are described in the following product standards: Speci-fications A 308/A 308M; A 463/A 463
7、M; A 653/A 653M;A 755/A 755M; A 792/A 792M; A 875/A 875M; A 929/A 929M; and A 1046/A 1046M.1.4 Metallic-coated steel sheet is produced to various coat-ing designations, as shown in the individual product specifica-tions. Except for differentially coated sheet, the coating isalways expressed as the t
8、otal coating of both surfaces.1.5 In case of any conflict in requirements, the requirementsof the individual product specifications shall prevail over thoseof this general specification.1.6 The purchaser is permitted to specify additional require-ments that do not negate any of the provisions of thi
9、s generalspecification or of the individual product specifications. Suchadditional requirements, the acceptance of which are subject tonegotiation with the supplier, shall be included in the orderinformation.1.7 For purposes of determining conformance with thisspecification and the various product s
10、pecifications referencedin 1.3, values shall be rounded to the nearest unit in theright-hand place of figures used in expressing the limitingvalues (except to the nearest 5 MPa for SI strength values) inaccordance with the rounding method of Practice E29.1.8 Metallic-coated steel sheet covered by th
11、is specificationis produced to thickness requirements expressed to 0.001 in.0.01 mm for both coils and cut lengths. The thickness is thetotal of the base steel and the coating.1.9 The values stated in inch-pound units or SI units are tobe regarded separately as standard. Within the text, the SI unit
12、sare shown in brackets. The values stated in each system are notexact equivalents; therefore, each system must be used inde-pendently of the other.1.10 This specification and some of the applicable productspecifications are expressed in both inch-pound and SI units.However, unless the order specifie
13、s the applicable “M” speci-fication designation (SI units), the product shall be furnished toinch-pound units.1.11 The text of this specification references notes andfootnotes that provide explanatory material. These notes andfootnotes (excluding those in tables and figures) shall not beconsidered a
14、s requirements of the specification.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 308/A 308M Specification for Steel Sheet, Terne (Lead-Tin Alloy) Coated by the Hot-Dip ProcessA 309 Test Method
15、 for Weight and Composition of Coatingon Terne Sheet by the Triple-Spot TestA 370 Test Methods and Definitions for Mechanical Testingof Steel Products1This specification is under the jurisdiction of ASTM Committee A05 onMetallic-Coated Iron and Steel Products and is the direct responsibility ofSubco
16、mmittee A05.11 on Sheet Specifications.Current edition approved May 1, 2009. Published June 2009. Originallyapproved in 1994. Last previous edition approved in 2008 as A 924/A 924M - 08a.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at servicea
17、stm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.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
18、States.A 428/A 428M Test Method for Weight Mass of Coatingon Aluminum-Coated Iron or Steel ArticlesA 463/A 463M Specification for Steel Sheet, Aluminum-Coated, by the Hot-Dip ProcessA 653/A 653M Specification for Steel Sheet, Zinc-Coated(Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed)by the Hot
19、-Dip ProcessA 700 Practices for Packaging, Marking, and LoadingMethods for Steel Products for ShipmentA 751 Test Methods, Practices, and Terminology forChemical Analysis of Steel ProductsA 754/A 754M Test Method for Coating Weight (Mass) ofMetallic Coatings on Steel by X-Ray FluorescenceA 755/A 755M
20、 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/A 875M Specification for Steel Sheet, Zinc-5 %
21、Aluminum Alloy-Coated by the Hot-Dip ProcessA 902 Terminology Relating to Metallic Coated Steel Prod-uctsA 929/A 929M Specification for Steel Sheet, Metallic-Coated by the Hot-Dip Process for Corrugated Steel PipeA 1030/A 1030M Practice for Measuring Flatness Charac-teristics of Steel Sheet Products
22、A 1046/A 1046M Specification for Steel Sheet, Zinc-Aluminum-Magnesium Alloy-Coated by the Hot-Dip Pro-cessE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE 376 Practice for Measuring Coating Thickness byMagnetic-Field or Eddy-Current (Electromagnetic
23、) Exami-nation Methods2.2 Federal Standard:Fed. Std. No. 123 Marking for Shipment (Civil Agencies)33. Terminology3.1 DefinitionsFor definitions of items used in this speci-fication, refer to Terminology A 902.4. Ordering Information4.1 Ordering information for all products are shown in theindividual
24、 product specifications.5. Materials and Manufacture5.1 Hot-dip metallic coatings are used to provide corrosionprotection to steel sheets. Hot-dip metallic coatings are avail-able in six different types, zinc and zinc-iron alloy, lead-tinalloy (Terne), aluminum, 55 % aluminum-zinc alloy, zinc-5 %alu
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