StandardWelding Termsand DefinitionsAWS A3.0:2001An American National StandardIncluding Terms for AdhesiveBonding, Brazing, Soldering,Thermal Cutting, andThermal Spraying
550 N.W. LeJeune Road, Miami, Florida 33126AWS A3.0:2001An American National StandardApproved byAmerican National Standards InstituteJuly 2, 2001Standard WeldingTerms and DefinitionsIncluding Terms for Adhesive Bonding, Brazing,Soldering, Thermal Cutting, and Thermal SprayingSupersedes ANSI/AWS A3.0-94Prepared byAWS A2 Committee on Definitions and SymbolsUnder the Direction ofAWS Technical Activities CommitteeApproved byAWS Board of DirectorsAbstractThis standard is a glossary of the technical terms used in the welding industry. Its purpose is to establish standard termsto aid in the communication of welding information. Since it is intended be a comprehensive compilation of welding termi-nology, nonstandard terms used in the welding industry are also included. All terms are either standard or nonstandard.They are arranged in the conventional dictionary letter-by-letter alphabetical sequence.Key Words—Standard welding terminology, welding definitions, brazing, soldering, thermal spraying, thermal cutting
viiTable of ContentsPage No.Personnel....................................................................................................................................................................iiiForeword......................................................................................................................................................................vList of Figures...........................................................................................................................................................viiiList of Tables................................................................................................................................................................ixTerms and Definitions..................................................................................................................................................1Annexes—Nonmandatory InformationAnnex A—The Definitions Subcommittee Manifesto of 1987...................................................................................125Annex B—A Guide to A3.0.......................................................................................................................................131Annex C—Modifications to A3.0 from A3.0-94........................................................................................................135Annex D—Guidelines for Preparation of Technical Inquiries for AWS Technical Committees...............................141
viiiList of FiguresFigurePage No.1Joint Types...................................................................................................................................................472Flanged Joints..............................................................................................................................................483Spliced Butt Joints.......................................................................................................................................494Joint Root.....................................................................................................................................................505Groove Face, Root Edge, and Root Face.....................................................................................................516Bevel Angle, Bevel Face, Depth of Bevel, Groove Angle, Bevel Radius, and Root Opening....................527Edge Shapes.................................................................................................................................................548Single-Groove Welds...................................................................................................................................559Double-Groove Welds..................................................................................................................................5810
