Standard Specification for Steel Sheet, 55 % …

1 Designation: A 792/A 792M 09 Standard Specification forSteel sheet , 55 % Aluminum-Zinc Alloy-Coated by the Hot-Dip Process1 This Standard is issued under the fixed designation A 792/A 792M; 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 superscript epsilon ( ) indicates an editorial change since the last revision or Standard has been approved for use by agencies of the Department of Scope* This specification covers 55 % aluminum-zinc alloy-coated Steel sheet in coils and cut This product is intended for applications requiringcorrosion resistance or heat resistance, or The product is produced in a number of designations,types, and grades which are designed to be compatible withdiffering application Product furnished under this specification shall conformto the applicable requirements of the latest issue of Specifica-tionA 924/A 924M.

2 Unless otherwise provided This specification is applicable to orders in eitherinch-pound units (as A 792) or SI units (as A 792M). Values ininch-pound and SI units are not necessarily equivalent. Withinthe text, SI units are shown in brackets. Each system shall beused independent of the Unless the order specifies the M designation (SIunits), the product shall be furnished to inch-pound 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 requirements of this Standard does not purport to address all of thesafety concerns, if any, associated with its use.

3 It is theresponsibility of the user of this Standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to Referenced standards :2A 90/A 90 MTest Method for Weight [Mass] of Coating onIron and Steel Articles with Zinc or Zinc-Alloy CoatingsA 568/A 568 MSpecification for Steel , sheet , Carbon,Structural, and High-Strength, Low-Alloy, Hot-Rolled andCold-Rolled, General Requirements forA 902 Terminology Relating to Metallic Coated Steel Prod-uctsA 924/A 924 MSpecification for General Requirements forSteel sheet , Metallic-Coated by the Hot-Dip ProcessE 517 Test Method for Plastic Strain Ratiorfor sheet MetalE 646 Test Method for Tensile Strain-Hardening Exponents(n-Values) of Metallic sheet Materials3.

4 See TerminologyA 902for definitions ofgeneral terminology relating to metallic-coated hot-dip of Terms Specific to This spangle the unaltered 55 % aluminum-zinc(Al-Zn) crystal structure that occurs during normal solidifica-tion of a hot-dip coated Steel temperature Steel a product intended for use inelevated temperature The material is available in several designations, Steel CS Types A, B, and C, Steel FS, Steel DS, Temperature Steel HTS, Steel Structural Steel is available in several grades based onmechanical properties. Structural Steel Grade 50 [340] isavailable in three classes based on tensile strength. StructuralSteel Grade 80 [550] is available in two classes, based specification is under the jurisdiction of ASTM CommitteeA05onMetallic-Coated Iron and Steel Products and is the direct responsibility sheet edition approved May 1, 2009.

5 Published June 2009. Originallyapproved in 1983. Last previous edition approved in 2006 as A 792/A 792M referenced ASTM standards , visit the ASTM website, , orcontact ASTM Customer Service at ForAnnual Book of ASTMS tandardsvolume information, refer to the Standard s Document Summary page onthe ASTM *A Summary of Changes section appears at the end of this ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United The product is available in several coating weights[masses] with the coating designation in accordance Ordering 55 % aluminum-zinc alloy-coated Steel sheet in coilsand cut lengths is produced to thickness requirements ex-pressed to in.

6 [ mm]. The thickness of the sheetincludes the base metal and the Orders for product to this specification shall include thefollowing information, as necessary, to adequately describe thedesired Name of product ( Steel sheet , 55 % aluminum-zincalloy coated), Designation of sheet Steel {CS (Type A, B, or C), FS,DS, HTS, or SS}. When a CS type is not specified, Type B will Strength grade as required for Structural Steel , ASTM designation number and year of issue, such asA 792 for inch-pound units or A 792M for SIunits, Coating designation, Chemically treated or not chemically treated, Oiled or not oiled, Dimensions (show thickness, width, flatness require-ments (if appropriate), and length (if cut length)).

7 The pur-chaser shall specify the appropriate table of thickness toler-ances in SpecificationA 924/A 924 Mthat applies to the order,that is, the table of thickness tolerances for3 8-in. [10-mm]edge distance, or the table of thickness tolerances for 1-in.[25-mm] edge Coil size requirements (specify maximum outsidediameter (OD), acceptable inside diameter (ID), and maximumweight [mass]), Packaging, Certification, if required, and heat analysis and me-chanical property report, Application (show part identification and descrip-tion), Special requirements (if any). If required, the product may be ordered to aspecified base metal thickness.

8 See Supplementary Require-ment Typical ordering descriptions are as follows: Steel sheet , 55 % aluminum-zinc alloy-coated, Forming Steel (FS),ASTM A 792 , coating designation AZ55, chemical treatment, nooil, minimum by 36 in. by coil, 48-in. maximum OD, 24-in. ID,10 000-lb maximum, for muffler sheet , 55 % aluminum-zinc alloy-coated, Commercial Steel (CSType A), ASTM A 792M , coating designation AZM150, chemicaltreatment, no oil, minimum by 900 mm by coil, 1200-mm maximumOD, 600-mm ID, 4500-kg maximum, for building Chemical The heat analysis of the base metal shall conform tothe requirements ofTable 2for CS (Types A, B, and C), FS,DS, HTS,Table 3for Include each of the elements listed inTables 2 and 3inthe report of heat analysis.

9 When the amount of copper, nickel,chromium, or molybdenum is less than %, report theanalysis either as < % or the actual determined the amount of vanadium, titanium, or columbium is lessthan %, report the analysis either as < % or theactual determined value. When the amount of boron is less %, report as < % or the actual determined Composition The 55 % aluminum-zinc alloycoating composition, by weight, is nominally 55 % aluminum, % silicon, and the balance Mechanical Structural Steel sheet shall conform to the mechanicalproperty requirements ofTable 4for the grade The typical mechanical properties for CS (Types A, B,and C), FS, DS, and HTS are listed inTable 5.

10 These typicalmechanical properties are nonmandatory. They are intendedsolely to provide the purchaser with as much information aspossible to make an informed decision on the Steel to bespecified. Values outside these ranges are to be All tests for mechanical properties shall be conducted inaccordance with the methods described in SpecificationA 924/A Inside Radii for Cold Bending StructuralSteel sheet is commonly fabricated by cold bending. There aremany interrelated factors that affect the ability of a Steel to coldform over a given radius under shop conditions. These factorsTABLE 1 Weight [Mass] of Coating RequirementsANOTE1 Use the information provided obtain the approxi-mate coating thickness from the coating weight [mass].