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AWS A5 32M A5 32-2011 Welding Consumables Gases and Gas Mixtures for Fusion Welding and Allied Processes (2nd Edition).pdf

1、WeldingConsumablesGases and GasMixtures forFusion Weldingand AlliedProcessesAWS A5.32M/A5.32:2011 (ISO 14175:2008 MOD)An American National StandardAWS A5.32M/A5.32:2011 (ISO 14175:2008 MOD)An American National StandardApproved by theAmerican National Standards InstituteJanuary 11, 2011Welding Consum

2、ablesGases and Gas Mixtures forFusion Welding and Allied Processes2nd EditionSupersedes ANSI/AWS A5.32/A5.32M-97 (R2007)Prepared by theAmerican Welding Society (AWS) A5 Committee on Filler Metals and Allied MaterialsUnder the Direction of theAWS Technical Activities CommitteeApproved by theAWS Board

3、 of DirectorsAbstractThis standard prescribes the requirement for the classification of gases and gas mixtures for fusion welding and allied processes. Classification is based on composition of the more popular single and multi-component gases.Additional requirements are included for purity and mois

4、ture of individual gas components, testing, retesting, packaging,and cylinder or container labeling. An annex is appended to the standard as a source of information concerning the classification system and the intended use of the gases and gas mixtures.This specification makes use of both U.S. Custo

5、mary Units and the International System of Units (SI). Since these are notequivalent, each system must be used independently of the other.International Standard Book Number: 978-0-87171-784-9American Welding Society550 N.W. LeJeune Road, Miami, FL 33126 2011 by American Welding SocietyAll rights res

6、ervedPrinted 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 otherwise, without the prior written permission of the copyrightowner.Authorization

7、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 the appro-priate fee is paid to the Copyright Clearance Center, 222 Rosewood Drive, Da

8、nvers, MA 01923, tel: (978) 750-8400;Internet: .AWS A5.32M/A5.32:2011 (ISO 14175:2008 MOD)iiAWS A5.32M/A5.32:2011 (ISO 14175:2008 MOD)iiiStatement on the Use of American Welding Society StandardsAll standards (codes, specifications, recommended practices, methods, classifications, and guides) of the

9、 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 in federal or state

10、laws and regulations, or the regulations of other governmen-tal bodies, 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 part of those laws

11、 andregulations. In all cases, these standards carry the full legal authority of the contract or other document that invokes theAWS standards. When this contractual relationship exists, changes in or deviations from requirements of an AWS standard must be by agreement between the contracting parties

12、.AWS American National Standards are developed through a consensus standards development process that brings together volunteers representing varied viewpoints and interests to achieve consensus. While the AWS adminis-ters the process and establishes rules to promote fairness in the development of c

13、onsensus, it does not independently test,evaluate, or verify the 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, whether special, indirect, consequent

14、ial, 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 published herein.In issuing and making this standard available, AWS is neither undertaking t

15、o 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 theadvice of a competent p

16、rofessional in determining the exercise of reasonable care in any given circumstances. It isassumed that the use of this standard and its provisions are entrusted to appropriately qualified and competent personnel.This standard may be superseded by the issuance of new editions. Users should ensure t

17、hat they have the latest edition.Publication of this standard does not authorize infringement of any patent or trade name. Users of this standard accept anyand all liabilities for infringement of any patent or trade name items. AWS disclaims liability for the infringement of anypatent or product tra

18、de name resulting from the use of this standard.Finally, the 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 discovered, are postedon the

19、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,Attention: Managing Director, Tech

20、nical 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, and they do not constitute prof

21、essionaladvice. 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, oral opinions are informal and sh

22、ould 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 withdrawn. Comments (recommendation

23、s,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 on FillerMetals and Allied Materials and the author of the comments will b

24、e informed of the Committees response to the comments. 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 pro-vided in the Rules of Op

25、eration of the Technical Activities Committee. A copy of these Rules can be obtained from theAmerican Welding Society, 550 N.W. LeJeune Road, Miami, FL 33126.AWS A5.32M/A5.32:2011 (ISO 14175:2008 MOD)ivThis page is intentionally blank.AWS A5.32M/A5.32:2011 (ISO 14175:2008 MOD)vPersonnelAWS A5 Commit

26、tee on Filler Metals and Allied MaterialsJ. S. Lee, Chair ChevronH. D. Wehr, Vice Chair Arcos Industries, LLCJ. J. DeLoach Jr., 2nd Vice Chair Naval Surface Warfare CenterR. K. Gupta, Secretary American Welding SocietyT. Anderson ESAB Welding and Cutting ProductJ. M. Blackburn Naval Sea Systems Comm

27、andJ. C. Bundy Hobart Brothers CompanyD. D. Crockett ConsultantR.V. Decker WeldstarD. A. DelSignore ConsultantJ. DeVito ESAB Welding and Cutting ProductsH. W. Ebert Consulting Welding EngineerD. M. Fedor The Lincoln Electric CompanyJ. G. Feldstein Foster Wheeler North AmericaS. E. Ferree ESAB Weldin

28、g and Cutting ProductsD. A. Fink The Lincoln Electric CompanyG. L. Franke Naval Surface Warfare CenterR. D. Fuchs Bhler Welding Group USA, IncorporatedR. M. Henson J.W. Harris Company, IncorporatedS. D. Kiser Special MetalsP. J. Konkol Concurrent Technologies CorporationD. J. Kotecki Damian Kotecki

29、Welding ConsultantsL. G. Kvidahl Northrop Grumman Ship SystemsA. Y. Lau Canadian Welding BureauW. A. Marttila Chrysler LLCT. Melfi The Lincoln Electric CompanyR. Menon Stoody CompanyM. T. Merlo Hyper Tech Research IncorporatedB. Mosier Polymet CorporationA. K. Mukherjee Siemens Power Generation, Inc

30、orporatedC. L. Null ConsultantK. C. Pruden Hydril CompanyS. D. Reynolds, Jr. ConsultantP. K. Salvesen Det Norske Veritas (DNV)K. Sampath ConsultantW. S. Severance ESAB Welding and Cutting ProductsM. J. Sullivan NASSCONational Steel and ShipbuildingR. C. Sutherlin ATI Wah ChangR. A. Swain Euroweld, L

31、imitedK. P. Thornberry Care Medical, IncorporatedM. D. Tumuluru US Steel CorporationH. J. White HAYNES InternationalAdvisors to the AWS A5 Committee on Filler Metal and Allied MaterialR. L. Bateman Soldaduras West Arco LimitadaR. A. Daemen ConsultantC. E. Fuerstenau LucasMilhaupt IncorporatedAWS A5.

32、32M/A5.32:2011 (ISO 14175:2008 MOD)viJ. P. Hunt Special MetalsS. Imaoka Kobe Steel LimitedD. R. Miller ABS Americas Materials DepartmentM. P. Parekh ConsultantM. A. Quintana The Lincoln Electric CompanyE. R. Stevens Stevens Welding ConsultingE. S. Surian National University of Lomas de ZamoraAWS A5S

33、 Subcommittee on Gases for Gas Shielded Arc Welding and CuttingJ. DeVito, Chair ESAB Welding therefore, each system must be used independently of the other, without combining values inany way. In selecting rational metric units, ANSI/AWS A1.1, Metric Practice Guide for the Welding Industry, is usedw

34、here suitable. Tables and figures make use of both U.S. Customary and SI units, which with the application of the specified tolerances provide for interchangeability of products in both the U.S. Customary and SI Units.ISO uses comma (,) for decimal, but AWS uses period (.) for decimal. Decimal comma

35、s have been changed to decimalperiods.This specification developed as below:ANSI/AWS A5.32/A5.32M-97 Specification for Welding Shielding GasesANSI/AWS A5.32/A5.32M-97R Specification for Welding Shielding GasesAWS A5.32M/A5.32:2011 (ISO 14175:2008 MOD)viiiThis page is intentionally blank.AWS A5.32M/A

36、5.32:2011 (ISO 14175:2008 MOD)ixTable of ContentsPage No.Personnel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vForeword . . . . . . . . . . . . . . . . . . . . . . . . . . . .

37、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viiList of Tables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi1. Scope

38、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12. Normative references . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

39、. . . . . . . . . . . . . . 22.1 AWS Standard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22.2 ASTM standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

40、. . . . . . . . . . . . . . . . . . . . . 22.3 ISO standard. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23. Terms and definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

41、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23.1 Base gas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23.2 Classification . . . . . . . . . . . . . . . . . . . . . . . . .

42、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23.3 Component. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23.4 Container . . . . . . . . . . . . . . . . .

43、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23.5 Designation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23.6 Impurity . . . . .

44、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23.7 Mixture. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

45、. . 23.8 Nominal value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23.9 Symbol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

46、 . . . . . . . . . . . . . 23.10 Trade name. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34. Properties of gases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

47、 . . . . . . . . . . . . . . . . . . . . . . . . . . . 34.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34.2 Rounding-off procedure. . . . . . . . . . . . . . . . . . . . . . . . . . .

48、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35. Classification and designation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35.1 Classification . . . . . . . . . . . . . . . . . . . . . . . .

49、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35.2 Designation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46. Tolerances of mixtures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67. Purities and dew point . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68. Testing .

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