1、Specification forCarbon SteelElectrodesand Rods forGas ShieldedArc WeldingAWS A5.18/A5.18M:2005An American National Standard550 N.W. LeJeune Road, Miami, Florida 33126AWS A5.18/A5.18M:2005An American National StandardApproved byAmerican National Standards InstituteJune 9, 2005Specification forCarbon
2、 Steel Electrodes and Rodsfor Gas Shielded Arc WeldingSupersedes AWS A5.18/A5.18M:2001Prepared byAWS A5 Committee on Filler Metals and Allied MaterialsUnder the Direction ofAWS Technical Activities CommitteeApproved byAWS Board of DirectorsAbstractThis specification prescribes the requirements for c
3、lassification of solid carbon steel electrodes and rods, compositestranded carbon steel electrodes, and composite metal cored carbon steel electrodes for gas shielded arc welding. Classi-fication is based on chemical composition of the electrode for solid electrodes and rods, chemical composition of
4、 weldmetal for composite stranded and composite metal cored electrodes and the as-welded mechanical properties of the weldmetal for each. Additional requirements are included for manufacture, sizes, lengths, and packaging. A guide is appendedto the specification as a source of information concerning
5、 the classification system employed and the intended use of theelectrodes and rods.This specification makes use of both U.S. Customary Units and the International System of Units (SI). Since theseunits are not equivalent, each system must be used independently of the other.Key WordsCarbon steel weld
6、ing electrodes, carbon steel welding rods, gas metal arc welding, gas tungsten arc welding, metal cored electrodes, plasma arc welding, stranded electrodesStatement on Use of AWS American National StandardsAll standards (codes, specifications, recommended practices, methods, classifications, and gui
7、des) of the AmericanWelding Society (AWS) are voluntary consensus standards that have been developed in accordance with the rules of theAmerican National Standards Institute (ANSI). When AWS standards are either incorporated in, or made part of,documents that are included in federal or state laws an
8、d regulations, or the regulations of other governmental bodies,their provisions carry the full legal authority of the statute. In such cases, any changes in those AWS standards must beapproved by the governmental body having statutory jurisdiction before they can become a part of those laws andregul
9、ations. In all cases, these standards carry the full legal authority of the contract or other document that invokes theAWS standards. Where this contractual relationship exists, changes in or deviations from requirements of an AWSstandard must be by agreement between the contracting parties.Internat
10、ional Standard Book Number: 0-87171-014-5American Welding Society, 550 N.W. LeJeune Road, Miami, FL 33126 2005 by American Welding Society. All rights reservedPrinted in the United States of AmericaAWS American National Standards are developed through a consensus standards development process that b
11、ringstogether volunteers representing varied viewpoints and interests to achieve consensus. While AWS administers the processand establishes rules to promote fairness in the development of consensus, it does not independently test, evaluate, orverify the accuracy of any information or the soundness
12、of any judgments contained in its standards.AWS disclaims liability for any injury to persons or to property, or other damages of any nature whatsoever, whether spe-cial, indirect, consequential or compensatory, directly or indirectly resulting from the publication, use of, or reliance on thisstanda
13、rd. AWS also makes no guaranty or warranty as to the accuracy or completeness of any information published herein.In issuing and making this standard available, AWS is not undertaking to render professional or other services for or onbehalf of any person or entity. Nor is AWS undertaking to perform
14、any duty owed by any person or entity to someoneelse. Anyone using these documents should rely on his or her own independent judgment or, as appropriate, seek the adviceof a competent professional in determining the exercise of reasonable care in any given circumstances.This standard may be supersed
15、ed by the issuance of new editions. Users should ensure that they have the latest edition.Publication of this standard does not authorize infringement of any patent or trade name. Users of this standard acceptany and all liabilities for infringement of any patent or trade name items. AWS disclaims l
16、iability for the infringement ofany patent or product trade name resulting from the use of this standard.Finally, AWS does not monitor, police, or enforce compliance with this standard, nor does it have the power to do so.On occasion, text, tables, or figures are printed incorrectly, constituting er
17、rata. Such errata, when discovered, are postedon the AWS web page (www.aws.org).Official interpretations of any of the technical requirements of this standard may only be obtained by sending a request, in writ-ing, to the Managing Director, Technical Services Division, American Welding Society, 550
18、N.W. LeJeune Road, Miami, FL33126 (see Annex B). With regard to technical inquiries made concerning AWS standards, oral opinions on AWS standardsmay be rendered. However, such opinions represent only the personal opinions of the particular individuals giving them. Theseindividuals do not speak on be
19、half of AWS, nor do these oral opinions constitute official or unofficial opinions or interpreta-tions of AWS. In addition, oral opinions are informal and should not be used as a substitute for an official interpretation.This standard is subject to revision at any time by the AWS A5 Committee on Fil
20、ler Metals and Allied Materials. It mustbe reviewed every five years, and if not revised, it must be either reaffirmed or withdrawn. Comments (recommenda-tions, additions, or deletions) and any pertinent data that may be of use in improving this standard are requiredand should be addressed to AWS He
21、adquarters. Such comments will receive careful consideration by the AWS A5Committee on Filler Metals and Allied Materials and the author of the comments will be informed of the Committeesresponse to the comments. Guests are invited to attend all meetings of the AWS A5 Committee on Filler Metals andA
22、llied Materials to express their comments verbally. Procedures for appeal of an adverse decision concerning all suchcomments are provided in the Rules of Operation of the Technical Activities Committee. A copy of these Rules can beobtained from the American Welding Society, 550 N.W. LeJeune Road, Mi
23、ami, FL 33126.Photocopy RightsAuthorization to photocopy items for internal, personal, or educational classroom use only, or the internal, personal, oreducational classroom use only of specific clients, is granted by the American Welding Society (AWS) provided that theappropriate fee is paid to the
24、Copyright Clearance Center, 222 Rosewood Drive, Danvers, MA 01923, Tel: 978-750-8400;online: http:/.iii*AdvisorPersonnelAWS A5 Committee on Filler Metals and Allied MaterialsD. A. Fink, Chair The Lincoln Electric CompanyJ. S. Lee, 1st Vice Chair CB therefore each system must be used indepen-dently o
25、f the other, without combining values in any way. In selecting rational metric units, AWS A1.1, Metric PracticeGuide for the Welding Industry, and ISO 544, Welding consumablesTechnical delivery conditions for welding fillermetalsType of product, dimensions, tolerances and markings, are used where su
26、itable. Tables and figures make use ofboth U.S. Customary and SI Units, which, with the application of the specified tolerances, provides for interchangeabilityof products in both U.S. Customary and SI Units.The current document is the sixth revision of the initial joint ASTM/AWS document issued in
27、1965.The history of A5.18 may be summarized as follows:AWS A5.18-65T Tentative Specification for Mild Steel Electrodes for Gas Metal Arc WeldingASTM A 559-65TAWS A5.18-69 Specification for Mild Steel Electrodes for Gas Metal Arc WeldingANSI W3.18-1973AWS A5.18-79 Specification for Carbon Steel Fille
28、r Metals for Gas Shielded Arc WeldingAWS A5.18-93 Specification for Carbon Steel Electrodes and Rods for Gas Shielded Arc WeldingAWS A5.18/A5.18M:2001 Specification for Carbon Steel Electrodes and Rods for Gas Shielded Arc WeldingTwo lines of Figure A2 have been revised and the radiographic requirem
29、ents have been updated. Vertical bars havebeen placed in the margins to identify these changes. Other editorial changes are not identified.Comments and suggestions for the improvement of this standard are welcome. They should be sent to the Secretary,AWS A5 Committee on Filler Metals and Allied Mate
30、rials, American Welding Society, 550 N.W. LeJeune Road, Miami,FL 33126.Official interpretations of any of the technical requirements of this standard may only be obtained by sending arequest, in writing, to the Managing Director, Technical Services Division, American Welding Society. A formal replyw
31、ill be issued after it has been reviewed by the appropriate personnel, following established procedures.AWS A5.18/A5.18M:2005This page is intentionally blank.viAWS A5.18/A5.18M:2005viiTable of ContentsPage No.Personnel iiiForeword vList of Tables viiiList of Figures. viii1. Scope .1Part AGeneral Req
32、uirements12. Normative References .12.1 ASTM Standards.12.2 AWS Standards.12.3 ANSI Standards 12.4 ISO Specifications 23. Classification.24. Acceptance 35. Certification.36. Rounding-Off Procedure .3Part BTests, Procedures, and Requirements 57. Summary of Tests58. Retest.59. Weld Test Assemblies.510
33、. Chemical Analysis.911. Radiographic Test .912. Tension Test 1113. Bend Test.1114. Impact Test1115. Diffusible Hydrogen Test12Part CManufacture, Identification, and Packaging .1216. Method of Manufacture.1217. Standard Sizes .1218. Finish and Uniformity .1419. Standard Package Forms .1420. Winding
34、Requirements1421. Filler Metal Identification .1422. Packaging 1523. Marking of Packages.15Nonmandatory Annexes19Annex AGuide to AWS Specification for Carbon Steel Electrodes and Rods for Gas Shielded Arc Welding19Annex BGuidelines for Preparation of Technical Inquiries for AWS Technical Committee29
35、AWS Filler Metal Specifications by Material and Welding Process31AWS Filler Metal Specifications and Related Documents .33AWS A5.18/A5.18M:2005viiiList of TablesTable Page No.1 Chemical Composition Requirements for Solid Electrodes and Rods 22 Chemical Composition Requirements for Weld Metal from Co
36、mposite Electrodes.33 Tension Test Requirements (As Welded) 44 Impact Test Requirements (As Welded)45 Required Tests56 Base Metal for Test Assemblies.87 Optional Diffusible Hydrogen Requirements 128 Standard Sizes 139 Packaging Requirements15List of FiguresFigure Page No.1 Groove Weld Test Assembly
37、for Mechanical Properties and Soundness62 Groove Weld Test Assembly for Transverse Tension and Longitudinal Guided Bend Tests.73 Pad for Chemical Analysis of Weld Metal from Composite Electrodes .84 Radiographic Acceptance Standards105A Standard SpoolsDimensions of 4, 8, 12, and 14 in. 100, 200, 300
38、, and 350 mm Spools165B Standard SpoolsDimensions of 22, 24, and 30 in. 560, 610, and 760 mm Spools17A1 Classification System.20A2 Optional GTAW Groove Weld Test Assembly for Mechanical Properties and Soundness23AWS A5.18/A5.18M:2005AWS A5.18/A5.18M:200511. Scope1.1 This specification prescribes req
39、uirements for theclassification of carbon steel electrodes (solid, compositestranded, and composite metal cored) and rods (solid) forgas metal arc (GMAW), gas tungsten arc (GTAW), andplasma arc (PAW) welding.1.2 Safety and health issues and concerns are beyond thescope of this standard and therefore
40、 are not fully ad-dressed herein. Some safety and health information canbe found in the nonmandatory Annex Sections A5 andA10. Safety and health information is available fromother sources, including but not limited to ANSI Z49.1,Safety in Welding, Cutting, and Allied Processes, andapplicable federal
41、 and state regulations.1.3 This specification makes use of both U.S. CustomaryUnits and the International System of Units (SI). The mea-surements are not exact equivalents; therefore, each systemmust be used independently of the other without combiningin any way when referring to weld metal properti
42、es. Thespecification with the designation A5.18 uses U.S. Cus-tomary Units. The specification A5.18M uses SI Units. Thelatter are shown within brackets or in appropriate col-umns in tables and figures. Standard dimensions based oneither system may be used for sizing of electrodes or pack-aging or bo
43、th under the A5.18 or A5.18M specifications.Part AGeneral Requirements2. Normative References2.1 ASTM Standards1A 36/A 36M Specification for Carbon Structural Steel1. ASTM standards are published by the American Society forTesting and Materials, 100 Barr Harbor Drive, West Consho-hocken, PA 19428-29
44、59.A 285/A 285M Specification for Pressure Vessel Plates,Carbon Steel, Low- and Intermediate-Tensile StrengthA 515/A 515M Specification for Pressure Vessel Plates,Carbon Steel, for Intermediate- andHigher-Temperature ServiceA 516/A 516M Specification for Pressure Vessel Plates,Carbon Steel, for Mode
45、rate- and Lower-Temperature ServiceE29 Standard Practice for Using SignificantDigits in Test Data to Determine Con-formance with SpecificationsE350 Standard Method for Chemical Analysisof Carbon Steel, Low Alloy Steel, SiliconElectrical Steel, Ingot Iron, and WroughtIronE 1032 Standard Test Method f
46、or RadiographicExamination of Weldments2.2 AWS Standards2AWS A5.01 Filler Metal Procurement GuidelinesAWS A5.32/ Specification for Welding Shielding GasesA5.32MAWS A4.3 Standard Methods for Determination ofthe Diffusible Hydrogen Content of Mar-tensitic, Bainitic, and Ferritic Steel WeldMetal Produc
47、ed by Arc WeldingAWS B4.0 or Standard Methods for Mechanical TestingB4.0M of Welds2.3 ANSI Standards3ANSI Z49.1 Safety in Welding, Cutting, and AlliedProcesses2. AWS standards are published by the American WeldingSociety, 550 N.W. LeJeune Road, Miami, FL 33126.3. ANSI standards are published by the
48、American NationalStandards Institute, 25 West 43rd Street, Fourth Floor, NewYork, NY 10036.Specification for Carbon Steel Electrodesand Rods for Gas Shielded Arc WeldingAWS A5.18/A5.18M:200522.4 ISO Specifications4ISO 544 Welding consumablesTechnical deliv-ery conditions for welding filler metalsTyp
49、e of product, dimensions, tolerances,and markings3. Classification3.1 The solid electrodes (and rods) covered by the A5.18specification utilize a classification system based uponU.S. Customary Units and are classified according to thechemical composition of the electrode, as specified inTable 1, and the as-welded mechanical properties of theweld metal, as specified in Tables 3 and 4. The composite4. ISO standards are published by the International Organiza-tion for Standardization, 1, rue de Varemb, Case postale 56,CH-1211 Geneva 20, Switzerland.strande
