1、Specification forCopper andCopper-Alloy BareWelding Rods andElectrodesAWS A5.7/A5.7M:2007An American National Standard550 N.W. LeJeune Road, Miami, FL 33126AWS A5.7/A5.7M:2007An American National StandardApproved by theAmerican National Standards InstituteApril 12, 2007Specification forCopper and Co
2、pper-AlloyBare Welding Rods and Electrodes7th EditionSupersedes ANSI/AWS A5.7-84Prepared 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
3、prescribes the requirements for classifications of copper and copper-alloy electrodes and rods for gasshielded metal arc, gas shielded tungsten arc, and plasma arc welding. Classification is based on chemical compositionof the filler metal. Additional requirements are included for manufacture, sizes
4、, lengths and packaging. A guide is ap-pended to the specification as a source of information concerning the classification system employed and intended use ofthe electrodes.This specification makes use of both U.S. Customary Units and the International System of Units (SI). Since these arenot equiv
5、alent, each system must be used independently of the other.iiAWS A5.7/A5.7M:2007International Standard Book Number: 978-0-87171-640-8American Welding Society550 N.W. LeJeune Road, Miami, FL 33126 2007 by American Welding SocietyAll rights reservedPrinted in the United States of AmericaPhotocopy Righ
6、ts. No portion of this standard may be reproduced, stored in a retrieval system, or transmitted in anyform, including mechanical, photocopying, recording, or otherwise, without the prior written permission of the copyrightowner.Authorization to photocopy items for internal, personal, or educational
7、classroom use only or the internal, personal, oreducational classroom use only of specific clients is granted by the American Welding Society provided that the appropriatefee is paid to the Copyright Clearance Center, 222 Rosewood Drive, Danvers, MA 01923, tel: (978) 750-8400; Internet:.iiiAWS A5.7/
8、A5.7M:2007Statement on the Use of American Welding Society StandardsAll standards (codes, specifications, recommended practices, methods, classifications, and guides) of the AmericanWelding Society (AWS) are voluntary consensus standards that have been developed in accordance with the rules of theAm
9、erican National Standards Institute (ANSI). When AWS American National Standards are either incorporated in, ormade part of, documents that are included in federal or state laws and regulations, or the regulations of other govern-mental bodies, their provisions carry the full legal authority of the
10、statute. In such cases, any changes in those AWSstandards must be approved by the governmental body having statutory jurisdiction before they can become a part ofthose laws and regulations. In all cases, these standards carry the full legal authority of the contract or other documentthat invokes the
11、 AWS standards. Where this contractual relationship exists, changes in or deviations from requirementsof an AWS standard must be by agreement between the contracting parties.AWS American National Standards are developed through a consensus standards development process that bringstogether volunteers
12、 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 of any judgments contain
13、ed in its standards.AWS disclaims liability for any injury to persons or to property, or other damages of any nature whatsoever, whetherspecial, indirect, consequential or compensatory, directly or indirectly resulting from the publication, use of, or relianceon this standard. AWS also makes no guar
14、anty or warranty as to the accuracy or completeness of any informationpublished herein.In issuing and making this standard available, AWS is neither undertaking 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 pe
15、rson or entity to someoneelse. Anyone using these documents should rely on his or her own independent judgment or, as appropriate, seek theadvice of a competent professional in determining the exercise of reasonable care in any given circumstances.This standard may be superseded by the issuance of n
16、ew 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 liability for the infrin
17、gement 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 errata. Such errata, when
18、 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 writing, to the appropriate technical committee. Such requests should be addressed to the American Welding Society,Atte
19、ntion: Managing Director, Technical Services Division, 550 N.W. LeJeune Road, Miami, FL 33126 (see Annex B).With regard to technical inquiries made concerning AWS standards, oral opinions on AWS standards may be rendered.These opinions are offered solely as a convenience to users of this standard, a
20、nd they do not constitute professionaladvice. Such opinions represent only the personal opinions of the particular individuals giving them. These individualsdo not speak on behalf of AWS, nor do these oral opinions constitute official or unofficial opinions or interpretations ofAWS. In addition, ora
21、l 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 reviewed every five years, and if not revised, it must be either reaffirmed or withd
22、rawn. 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 consideration by the AWS A5 Committee onFiller Metals and Allied Materials and the
23、 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 Materials toexpress their comments verbally. Procedures for appeal of an adverse decision concerning all such comments are
24、provided in the Rules of Operation of the Technical Activities Committee. A copy of these Rules can be obtained fromthe American Welding Society, 550 N.W. LeJeune Road, Miami, FL 33126.This page is intentionally blank.ivAWS A5.7/A5.7M:2007vAWS A5.7/A5.7M:2007PersonnelAWS A5 Committee on Filler Metal
25、s and Allied MaterialsD. A. Fink, Chair The Lincoln Electric CompanyJ. S. Lee, 1st Vice Chair CB therefore each system must be used inde-pendently of the other, without combining in any way. In selecting rational metric units the AWS A1.1, Metric PracticeGuide for the Welding Industry, and ISO 544:
26、Welding consumables Technical delivery conditions for welding fillermetals Type of product, dimensions, tolerances and markings, are used as guides. Tables and figures make use of bothU.S. Customary and SI Units, which with the application of the specified tolerances provide for interchangeability o
27、fproducts in both U.S. Customary and SI Units. The new filler metal classification ERCuSn-C, and the requirements foridentification of straight length rods have been added in this edition as shown in Italic font.Document DevelopmentASTM B 259-52T Tentative Specifications for Copper and Copper-Alloy
28、Welding RodsAWS A5.7-52TASTM B 259-57T Tentative Specifications for Copper and Copper-Alloy Welding RodsAWS A5.7-57TASTM B 259-66T Tentative Specification for Copper and Copper-Alloy Welding RodsAWS A5.7-66TAWS A5.7-69 Specification for Copper and Copper Alloy Welding RodsANSI W3.7-73AWS A5.7-77 Spe
29、cification for Copper and Copper Alloy Bare Welding Rods and ElectrodesANSI/AWS A5.7-84 Specification for Copper and Copper Alloy Bare Welding Rods and ElectrodesANSI/AWS A5.7-84R Reaffirmed June 19, 1991ANSI/AWS A5.7-84R Reaffirmed December 19, 2000Comments and suggestions for the improvement of th
30、is standard are welcome. They should be sent to the Secretary,AWS A5 Committee on Filler Metals and Allied Materials, American Welding Society, 550 N.W. LeJeune Road, Miami,FL 33126.This page is intentionally blank.viiiAWS A5.7/A5.7M:2007ixAWS A5.7/A5.7M:2007Table of ContentsPage No.PersonnelvForewo
31、rd viiList of Tables xList of Figures.x1. Scope.12. Normative References.13. Classification24. Acceptance .25. Certification .26. Rounding-Off Procedure 27. Summary of Tests28. Retest 29. Chemical Analysis .210. Method of Manufacture211. Standard Sizes and Shapes.212. Finish and Uniformity.413. Stan
32、dard Package Forms414. Winding Requirements .515. Filler Metal Identification 716. Packaging .717. Marking of Packages.7Annex A (Informative)Guide to AWS Specification for Copper and Copper-Alloy Bare WeldingAnnex A (Informative)Rods and Electrodes 9Annex B (Informative)Guidelines for the Preparatio
33、n of Technical Inquiries.15AWS Filler Metal Specifications by Material and Welding Process .17AWS Filler Metal Specifications and Related Documents 19xAWS A5.7/A5.7M:2007List of TablesTable Page No.1 Chemical Composition Requirements.32 Standard Sizes .43 Standard Package Dimensions and Weights .5A.
34、1 Comparison of Specifications .9A.2 Hardness and Tensile Strength of Copper and Copper-Alloy Weld Metal.12A.3 Discontinued Classifications.13List of FiguresFigure Page No.1 Dimensions of 4 in, 8 in, and 12 in 100 mm, 200 mm, and 300 mm Spools .6AWS A5.7/A5.7M:200711. Scope1.1 This specification pre
35、scribes requirements for theclassification of copper and copper-alloy bare weldingrods and electrodes for plasma arc, gas metal arc, and gastungsten arc welding. It includes compositions in whichthe copper content exceeds that of any other element.11.2 Safety and health issues and concerns are beyon
36、d thescope of this standard and, therefore, are not fullyaddressed herein. Some safety and health informationcan be found in the informative annex clauses A5 andA10. Safety and health information is available fromother sources, including, but not limited to, ANSI Z49.1,Safety in Welding, Cutting, an
37、d Allied Processes, andapplicable federal and state regulations.1.3 This specification makes use of both U.S. CustomaryUnits and the International System of Units (SI). Themeasurements are not exact equivalents; therefore, eachsystem must be used independently of the other withoutcombining in any wa
38、y when referring to material proper-ties. The specification with the designation A5.7 usesU.S. Customary Units. The specification A5.7M uses SIUnits. The latter are shown within brackets or inappropriate columns in tables and figures. Standarddimensions based on either system may be used for siz-ing
39、 of filler metal or packaging or both under A5.7 orA5.7M specification.2. Normative ReferencesThe following standards contain provisions which,through reference in this text, constitute provisions ofthis AWS standard. For dated references, subsequentamendments to, or revisions of, any of these publi
40、cationsdo not apply. However, parties to agreement based on1No attempt has been made to provide for classification of allgrades of copper and copper-alloy filler metals; only the morecommonly used have been included.this AWS standard are encouraged to investigate the pos-sibility of applying the mos
41、t recent editions of the docu-ments shown below. For undated references, the latestedition of the standard referred to applies.2.2 The following AWS standard2is referenced in thenormative clauses of this document:(1) AWS A5.01, Filler Metal Procurement Guidelines.2.3 The following ANSI standard3is r
42、eferenced in thenormative clauses of this document:(1) ANSI Z49.1, Safety in Welding, Cutting, andAllied Processes.2.4 The following ASTM International standards4arereferenced in the normative clauses of this document:(1) ASTM E 29, Standard Practice for Using Signifi-cant Digits in Test Data to Det
43、ermine Conformance withSpecifications.(2) ASTM E 75, Test Methods for Chemical Analysisof Copper-Nickel and Copper-Nickel-Zinc Alloys.(3) ASTM E 478, Standard Test Methods for Chemi-cal Analysis of Copper Alloys.2.5 The following ISO standard5is referenced in thenormative clauses of this document:IS
44、O 544: Welding consumables Technical deliveryconditions for welding filler materials Type of product,dimensions, tolerances and markings.2AWS standards are published by the American WeldingSociety, 550 N.W. LeJeune Road, Miami, FL 33126.3This ANSI standard is published by the American WeldingSociety
45、, 550 N.W. LeJeune Road, Miami, FL 33126.4ASTM International standards are published by the AmericanSociety for Testing and Materials, 100 Barr Harbor Drive, WestConshohocken, PA 19428-2959.5ISO standards are published by the International Organizationfor Standardization, 1, rue de Varemb, Case post
46、ale 56, CH-1211Geneva 20, Switzerland.Specification for Copper and Copper-AlloyBare Welding Rods and ElectrodesAWS A5.7/A5.7M:200723. Classification3.1 The welding materials covered by the AWS A5.7/A5.7M specification are classified using a system that isindependent of U.S. Customary Units and the I
47、nterna-tional System of Units (SI). Classification is according tothe chemical composition of the filler metal or rod stockfrom which it was made, as specified in Table 1.3.2 Material classified under one classification shall notbe classified under any other classification of this speci-fication.3.3
48、 The materials classified under this specification areintended for plasma arc, gas metal arc, and gas tungstenarc welding, but that does not prohibit their use withother welding processes for which they are found suitable.4. AcceptanceAcceptance6of the material shall be in accordancewith the provisi
49、ons of AWS A5.01.5. CertificationBy affixing the AWS specification and classificationdesignations to the packaging or the AWS classificationto the product, the manufacturer certifies that the productmeets the requirements of this specification.76. Rounding-Off ProcedureFor purposes of determining conformance with thisspecification, an observed or calculated value shall berounded to the “nearest unit” in the last right-hand placeof figures used in expressing the limiting value in accor-dance with the rounding-off method given in ASTME29.7. Summary of TestsChemical analysis o
