1、AWS A5.18/A5.18M:2017An American National StandardSpecification forCarbon SteelElectrodes andRods for GasShielded ArcWeldingAWS A5.18/A5.18M:2017An American National StandardApproved by theAmerican National Standards InstituteJuly 11, 2017Specification forCarbon Steel Electrodes and Rodsfor Gas Shie
2、lded Arc Welding7th EditionSupersedes AWS A5.18/A5.18M:2005Prepared by theAmerican Welding Society (AWS) A5 Committee on Filler Metals and Allied ProcessesUnder the Direction of theAWS Technical Activities CommitteeApproved by theAWS Board of DirectorsAbstractThis specification prescribes the requir
3、ements for classification 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 co
4、mposition of 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 manufacturing, diameters, lengths, and packaging. A guide isappended to the specification as a source of info
5、rmation concerning the classification system employed and the intendeduse of the electrodes and rods.This specification makes use of both U.S. Customary Units and the International System of Units (SI). Since these unitsare not equivalent, each system must be used independently of the other.iiAWS A5
6、.18/A5.18M:2017ISBN: 978-0-87171-922-5 2017 by American Welding SocietyAll rights reservedPrinted in the United States of AmericaPhotocopy Rights. No portion of this standard may be reproduced, stored in a retrieval system, or transmitted in anyform, including mechanical, photocopying, recording, or
7、 otherwise, without the prior written permission of thecopyright owner.Authorization 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 provided that t
8、he appro-priate fee is paid to the Copyright Clearance Center, 222 Rosewood Drive, Danvers, MA 01923, tel: (978) 750-8400;Internet: .iiiAWS A5.18/A5.18M:2017Statement on the Use of American Welding Society StandardsAll standards (codes, specifications, recommended practices, methods, classifications
9、, and guides) 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 American National Standards are either incorporated in, ormade part of, documents that are included
10、in federal or state laws and regulations, or the regulations of other governmentalbodies, their provisions carry the full legal authority of the statute. In such cases, any changes in those AWS standardsmust be approved by the governmental body having statutory jurisdiction before they can become a
11、part of those lawsand regulations. In all cases, these standards carry the full legal authority of the contract or other document that invokesthe AWS standards. Where this contractual relationship exists, changes in or deviations from requirements of an AWSstandard must be by agreement between the c
12、ontracting parties.AWS American National Standards are developed through a consensus standards development process that brings to-gether volunteers representing varied viewpoints and interests to achieve consensus. While AWS administers the process andestablishes rules to promote fairness in the dev
13、elopment of consensus, it does not independently test, evaluate, or verifythe accuracy of any information or the soundness 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, whetherspecial, indirect
14、, consequential, or compensatory, directly or indirectly resulting from the publication, use of, or relianceon this standard. AWS also makes no guarantee or warranty as to the accuracy or completeness of any information publishedherein.In issuing and making this standard available, AWS is neither un
15、dertaking to render professional or other services for oron behalf of any person or entity, nor is AWS undertaking to perform 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 ad-vice of
16、a competent professional in determining the exercise of reasonable care in any given circumstances. It is assumedthat the use of this standard and its provisions is entrusted to appropriately qualified and competent personnel.This standard may be superseded by new editions. This standard may also be
17、 corrected through publication of amendmentsor errata, or supplemented by publication of addenda. Information on the latest editions of AWS standards includingamendments, errata, and addenda is posted on the AWS web page (www.aws.org). Users should ensure that they havethe latest edition, amendments
18、, errata, and addenda.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 liability for the infringement ofany patent or product trade name res
19、ulting from the use of this standard.AWS does not monitor, police, or enforce compliance with this standard, nor does it have the power to do so.Official interpretations of any of the technical requirements of this standard may only be obtained by sending a request,in writing, to the appropriate tec
20、hnical committee. Such requests should be addressed to the American Welding Society,Attention: Managing Director, Standards Development, 8669 NW 36 St, # 130, Miami, FL 33166 (see Annex B). Withregard to technical inquiries made concerning AWS standards, oral opinions on AWS standards may be rendere
21、d. Theseopinions are offered solely as a convenience to users of this standard, and they do not constitute professional advice.Such opinions represent only the personal opinions of the particular individuals giving them. These individuals do notspeak on behalf of AWS, nor do these oral opinions cons
22、titute official or unofficial opinions or interpretations 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 Filler Metals and Allied Materials. It mustbe rev
23、iewed every five years, and if not revised, it must be either reaffirmed or withdrawn. Comments (recommendations,additions, or deletions) and any pertinent data that may be of use in improving this standard are required and should beaddressed to AWS Headquarters. Such comments will receive careful c
24、onsideration by the AWS A5 Committee onFiller Metals and Allied Materials and the author of the comments will be informed of the Committees response to thecomments. Guests are invited to attend all meetings of the AWS A5 Committee on Filler Metals and Allied Materialsto express their comments verbal
25、ly. Procedures for appeal of an adverse decision concerning all such comments areprovided in the Rules of Operation of the Technical Activities Committee. A copy of these Rules can be obtained fromthe American Welding Society, 8669 NW 36 St, # 130, Miami, FL 33166.This page is intentionally blank.iv
26、AWS A5.18/A5.18M:2017vAWS A5.18/A5.18M:2017PersonnelAWS A5 Committee on Filler Metals and Allied MaterialsH. D. Wehr, Chair Arcos Industries LLCR. D. Fuchs, 2nd Vice Chair Voestalpine Bhler Welding USA, IncorporatedR. K. Gupta, Secretary American Welding SocietyT. Anderson ITWMiller Electric Manufac
27、turing CompanyJ. C. Bundy Hobart Brothers CompanyJ. L. Caron Haynes International, IncorporatedG. L. Chouinard Stoody Company (a division of ESAB)D. D. Crockett ConsultantR. V. Decker WeldstarD. M. Fedor The Lincoln Electric CompanyJ. G. Feldstein Foster Wheeler North AmericaD. A. Fink The Lincoln E
28、lectric CompanyG. L. Franke ConsultantR. M. Henson Harris Products GroupS. D. Kiser ConsultantP. J. Konkol Concurrent Technologies CorporationD. J. Kotecki Damian Kotecki Welding ConsultantsL. G. Kvidahl Ingalls ShipbuildingA. Y. Lau Canadian Welding BureauJ. S. Lee ChevronJ. R. Logan Babcock theref
29、ore, each system must be used independently ofthe other without combining values in any way. In selecting rational metric units, AWS A1.1, Metric Practice Guide forthe Welding Industry, and ISO 544, Welding consumables Technical delivery conditions for filler materials andfluxes Type of product, dim
30、ensions, tolerances and markings, are used where suitable. 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.This current document is the sixth revisi
31、on of the initial joint ASTM/AWS document issued in 1965.This 2017 edition includes the following substantive changes which are shown in Italic font in this document.A new solid electrode classification, ER70S-8 ER49S-8, has been added for single and multiple pass applica-tions. This electrode type
32、has been adopted from ISO 14341 (class S11).Two new composite electrode classifications have been added: (1) the E70C-8X E49C-8X classification forDCEN welding and (2) the E70C-12X E49C-12X classification which has been added to meet ASME, Section IX,A-No. 1 weld metal chemical composition per QW-44
33、2.Packaging information has been replaced by the reference of AWS A5.02/A5.02M, Specification for Filler MetalStandard Sizes, Packaging, and Physical Attributes. The use of A5.02/A5.02M will now require positive identifica-tion of all cut length rods by imprinting, embossing, tagging, etc.Rounding P
34、rocedure has been revised to bring it in line with ISO procedure.The classification designator for the A5.18M specification was changed from ER48 and EC48 to ER49 and EC49,along with a corresponding change in the minimum tensile strength required from 480 MPa to 490 MPa.B (boron) reporting requireme
35、nts have been added in Tables 1 and 2.The GTAW groove weld test has been moved from Annex A to the body of the specification.The composite metal cored electrodes classified in this revision of A5.18/A5.18M are also classified in the new AWSA5.36/A5.36M, Specification for Carbon and Low-Alloy Steel E
36、lectrodes for Flux Cored Arc Welding and Metal CoredElectrodes for Gas Metal Arc Welding. The A5.36/A5.36M specification utilizes a new open classification system. Com-bining the metal cored electrodes and flux cored electrodes into a single specification is consistent with the approachtaken by ISO
37、and other international code bodies. In addition, metal cored and flux cored electrode classifications areboth based upon weld deposit composition, unlike solid GMAW electrodes which are classified based upon electrodecomposition.viiiAWS A5.18/A5.18M:2017Document DevelopmentThe evolution took place
38、as below:AWS A5.18-65T Tentative Specification for Mild Steel Electrodes for Gas Metal Arc WeldingASTM A559-65TAWS A5.18-69 Specification for Mild Steel Electrodes for Gas Metal Arc WeldingANSI W3.18-1973AWS A5.18-79 Specification for Carbon Steel Filler Metals for Gas Shielded Arc WeldingAWS A5.18-
39、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 WeldingAWS A5.18/A5.18M:2005 Specification for Carbon Steel Electrodes and Rods for Gas Shielded Arc WeldingComments and sug
40、gestions for the improvement of this standard are welcome. They should be sent to the Secretary,AWS A5 Committee on Filler Metals and Allied Materials, American Welding Society, 8669 NW 36 St, # 130, Miami,FL 33166.ixAWS A5.18/A5.18M:2017Table of ContentsPage No.Personnel vForeword.viiList of Figure
41、s.xList of Tables.x1. Scope.12. Normative References .12.1 AWS Standards 12.2 ASTM Standards12.3 ANSI Standards22.4 ISO Specifications23. Classification24. Acceptance .55. Certification .56. Rounding Procedure .57. Summary of Tests 68. Retest 89. Weld Test Assemblies 810. Chemical Analysis .1311. Ra
42、diographic Test1312. Tension Test1513. Bend Test 1514. Impact Test.1615. Diffusible Hydrogen Test .1616. Method of Manufacture1717. Standard Sizes .1718. Finish and Uniformity.1719. Standard Package Forms1720. Winding Requirements .1721. Filler Metal Identification.1822. Packaging .1823. Marking of
43、Packages.18Annex A (Informative)Guide to AWS Specification for Carbon Steel Electrodes and Rodsfor Gas Shielded Arc Welding.19Annex B (Informative)Requesting an Official Interpretation on an AWS Standard 29AWS Filler Metal Specifications by Material and Welding Process31AWS Filler Metal Specificatio
44、ns and Related Documents.33xAWS A5.18/A5.18M:2017List of FiguresFigure Page No.1 A5.18/A5.18M Classification System.42 Groove Weld Test Assembly for Mechanical Properties and Soundness93 Weld Test Assembly for Transverse Tension and Longitudinal Guided Bend Tests 104 Pad for Chemical Analysis of Wel
45、d Metal from Composite Electrodes.115 Radiographic Acceptance Standards.14List of TablesTable Page No.1 Chemical Composition Requirements for Solid Electrodes and Rods32 Chemical Composition Requirements for Weld Metal from Composite Electrodes 53 Required Tests .64 Mechanical Property Requirements
46、(As-Welded).75 Base Metal for Test Assemblies 116 GMAW Groove Weld Assembly Test Conditions for Solid Electrodes127 GTAW Groove Weld Assembly Test Conditions for Solid Rods128 Diffusible Hydrogen Limits for Weld Metal.16AWS A5.18/A5.18M:20171Specification for Carbon Steel Electrodesand Rods for Gas
47、Shielded Arc Welding1. Scope1.1 This specification prescribes requirements for the classification of carbon steel electrodes (solid, composite stranded,and composite metal cored) and rods (solid) for gas metal arc (GMAW), gas tungsten arc (GTAW), and plasma arc(PAW) welding. Rod is understood to inc
48、lude both cut lengths and spooled wires for GTAW or PAW.1.2 This specification makes use of both U.S. Customary Units and the International System of Units (SI). The measure-ments are not exact equivalents; therefore, each system must be used independently of the other without combining inany way wh
49、en referring to weld metal properties. The specification with the designation A5.18 uses U.S. CustomaryUnits. The specification A5.18M uses SI Units. The latter are shown within brackets or in appropriate columns intables and figures. Standard dimensions based on either system may be used for sizing of electrodes or packaging or bothunder the A5.18 or A5.18M specifications.1.3 Safety and health issues and concerns are beyond the scope of this standard; some safety and health information isprovided, but such issues are not fully addressed herein. Some safety and health infor
