ASTM_A_123_-_A_123M_-_15.pdf

Designation:A123/A123M15Standard Specification forZinc(Hot-Dip Galvanized)Coatings on Iron and SteelProducts1This standard is issued under the fixed designation A123/A123M;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()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope*1.1 This specification covers the requirements for zinccoating(galvanizing)by the hot-dip process on iron and steelproducts made from rolled pressed and forged shapes,castings,plates,bars,and strips.1.2 This specification covers both unfabricated products andfabricated products,for example,assembled steel products,structural steel fabrications,large tubes already bent or weldedbefore galvanizing,and wire work fabricated from uncoatedsteel wire.This specification also covers steel forgings and ironcastings incorporated into pieces fabricated before galvanizingor which are too large to be centrifuged(or otherwise handledto remove excess galvanizing bath metal).NOTE1This specification covers those products previously addressedin Specifications A123-78 and A386-78.1.3 This specification does not apply to wire,pipe,tube,orsteel sheet which is galvanized on specialized or continuouslines,or to steel less than 22 gage(0.0299 in.)0.76 mm thick.1.4 The galvanizing of hardware items that are to becentrifuged or otherwise handled to remove excess zinc(suchas bolts and similar threaded fasteners,castings and rolled,pressed and forged items)shall be in accordance with Speci-fication A153/A153M.1.5 Fabricated reinforcing steel bar assemblies are coveredby the present specification.The galvanizing of separatereinforcing steel bars shall be in accordance with SpecificationA767/A767M.1.6 This specification is applicable to orders in eitherinch-pound units(as A123)or SI units(as A123M).Inch-pound units and SI units are not necessarily exact equivalents.Within the text of this specification and where appropriate,SIunits are shown in parentheses.Each system shall be usedindependently of the other without combining values in anyway.In the case of orders in SI units,all testing and inspectionshall be done using the metric equivalent of the test orinspection method as appropriate.In the case of orders in SIunits,such shall be stated to the galvanizer when the order isplaced.2.Referenced Documents2.1 ASTM Standards:2A47/A47M Specification for Ferritic Malleable Iron Cast-ingsA90/A90M Test Method for Weight Mass of Coating onIron and Steel Articles with Zinc or Zinc-Alloy CoatingsA143/A143M Practice for Safeguarding Against Embrittle-ment of Hot-Dip Galvanized Structural Steel Products andProcedure for Detecting EmbrittlementA153/A153M Specification for Zinc Coating(Hot-Dip)onIron and Steel HardwareA384/A384M Practice for Safeguarding Against Warpageand Distortion During Hot-Dip Galvanizing of SteelAssembliesA385 Practice for Providing High-Quality Zinc Coatings(Hot-Dip)A767/A767M Specification for Zinc-Coated(Galvanized)Steel Bars for Concrete ReinforcementA780 Practice for Repair of Damaged and Uncoated Areasof Hot-Dip Galvanized CoatingsA902 Terminology Relating to Metallic Coated Steel Prod-uctsB6 Specification for ZincB487 Test Method for Measurement of Metal and OxideCoating Thickness by Microscopical Examination ofCross SectionB602 Test Method for Attribute Sampling of Metallic andInorganic CoatingsB960 Specification for Prime Western Grade-Recycled(PWG-R)Zinc1This specification is under the jurisdiction of ASTM Committee A05 onMetallic-Coated Iron and Steel Products and is the direct responsibility ofSubcommittee A05.13 on Structural Shapes and Hardware Specifications.Current edition approved Oct.1,2015.Published October 2015.Originallyapproved in 1928.Last previous edition approved in 2013 as A123/A123M-13.DOI:10.1520/A0123_A0123M-15.2For 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.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 D6386 Practice for Preparation of Zinc(Hot-Dip Galva-nized)Coated Iron and Steel Product and HardwareSurfaces for PaintingD7803 Practice for Preparation of Zinc(Hot-Dip Galva-nized)Coated Iron and Steel Product and HardwareSurfaces for Powder CoatingE376 Practice for Measuring Coating Thickness byMagnetic-Field or Eddy-Current(Electromagnetic)Test-ing Methods3.Terminology(See Fig.1)3.1 Definitions:3.1.1 The following terms and definitions are specific to thisspecification.Terminology A902 contains other terms anddefinitions relating to metallic