Astm a123 123m requires a minimum average coating thickness of 3. Box c700, west conshohocken, pa 194282959, united status. Hotdip galvanizing to astm a123 fact sheet hotdip galvanizing hdg is the process of dipping fabricated steel into a kettle or vat containing molten zinc. This specification covers the standard requirements for hotdip galvanized zinc coatings on iron and steel products made from rolled pressed and forged shapes. Astm a123 standard specification for zinc hotdip galvanized coatings on iron and steel products astm a143 standard practice for safeguarding against embrittlement of hotdip.
Composicion quimica propiedades mecanicas c mn p s 0. An astm designation number identifies a unique version of an astm standard. The requirements listed in astm a 123 a 123m include coating thickness, finish, appearance, and adherence. Industrial catalogo galvanizado por inmersion en caliente. The specification astm a123 a123m covers individual steel pieces as well as assemblies of various classes of material. Astm a123 a123m 17 standard specification for zinc. Perfil estructural tubular negro y galvanizado astm. Astm a123 and g90 specifications american galvanizers. It is intended to be applicable to fasteners that are centrifuged or otherwise handled to remove excess zinc. Perfil estructural tubular negro y galvanizado astm a500 ntc. Astm a123, standard specification of zinc hotdip galvanized coatings on iron and steel products, refers to products fabricated.
The specification astm a123a123m covers individual steel pieces as well as assemblies of various classes of material. Apr 14, 2015 the astm specifications a 143a 143m, astm a 384a 384m, and astm a 385 provide guidelines for preparing products for hotdip galvanizing. Norma astm a123 revestimiento acero prueba gratuita. Astm a123 for structural steel american galvanizers association. Active standard astm a123 a123m developed by subcommittee. A fabrication can have more than one material category such as a frame assembly. Escuela politecnica nacional repositorio digital epn. Local dimensoes capacidade resende rj,00 x 1,80 x 3,20 m 6.
Astm f2329 covers the requirements for hotdip zinc coating applied to carbon steel and alloy steel bolts, screws, washers, nuts, and special threaded fasteners applied by the hotdip coating process. Astm a325 pernos estructurales pueden venir con dos especificaciones mecanicas diferentes. This specification is for hotdip galvanizing steel sheet using the continuous highspeed galvanizing process. Industry surveys, however, indicate that the standard galvanizing process would produce a coating of between 5 and 7 mils of zinc to such a product. Hotdip galvanized fasteners, depending upon diameter, will have from 1. Pagina principal ensayos norma astm a123 en espanol. While the steel is in the kettle, the iron in the steel metallurgically reacts with the molten zinc to form a tightlybonded alloy coating that provides superior corrosion protection to steel. These are each defined below and discussed in more detail later in this course.
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