AWS A5.24/A5.24M:2014

An American National Standard

Specification for Zirconium and Zirconium-Alloy Welding Electrodes and Rods

AWS A5.24/A5.24M:2014

An American National Standard

Approved by the American National Standards Institute

January 24, 2014

Specification for Zirconium and Zirconium-Alloy Welding Electrodes and Rods

4th Edition

Supersedes A5.24/A5.24M:2005

Prepared by the American Welding Society (AWS) A5 Committee on Filler Metals and Allied Materials

Under the Direction of the AWS Technical Activities Committee

Approved by the AWS Board of Directors

Abstract

This specification prescribes the requirements for classification of zirconium and zirconium alloy electrodes and rods for gas metal arc welding, gas tungsten arc welding, and plasma arc welding. The compositions specified for each classifica- tion represent the latest state-of-the-art. Additional requirements are included for testing procedures, manufacture, sizes, lengths, and packaging. A guide is appended to the specification as a source of information concerning the classification system employed and the intended use of the zirconium-alloy filler metal.

This specification makes use of both U.S. Customary Units and the International System of Units (SI). Since these are not equivalent, each system must be used independently of the other.

International Standard Book Number: 978-0-87171-844-0

American Welding Society 8669 NW 36 St, #130, Miami, FL 33166

©2014 by American Welding Society

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All standards (codes, specifications, recommended practices, methods, classifications, and guides) of the American Welding Society (AWS) are voluntary consensus standards that have been developed in accordance with the rules of the American National Standards Institute (ANSI). When AWS American National Standards are either incorporated in, or made part of, documents that are included in federal or state 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 standards must be approved by the governmental body having statutory jurisdiction before they can become a part of those laws and regulations. In all cases, these standards carry the full legal authority of the contract or other document that invokes the AWS standards. Where this contractual relationship exists, changes in or deviations from requirements of an AWS stan- dard must be by agreement between the contracting parties.

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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, Technical Services Division, 8669 NW 36 St, # 130, Miami, FL 33166 (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 professional advice. Such opinions represent only the personal opinions of the particular individuals giving them. These individuals do not speak on behalf of AWS, nor do these oral opinions constitute 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 must be reviewed 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 be addressed to AWS Headquarters. Such comments will receive careful consideration by the AWS A5 Committee on Filler Metals and Allied Materials and the author of the comments will be informed of the Committee’s response to the com- ments. Guests are invited to attend all meetings of the AWS A5 Committee on Filler Metals and Allied Materials to express their comments verbally. Procedures for appeal of an adverse decision concerning all such comments are pro- vided in the Rules of Operation of the Technical Activities Committee. A copy of these Rules can be obtained from the American Welding Society, 8669 NW 36 St, # 130, Miami, FL 33166.

Personnel

AWS A5 Committee on Filler Metals and Allied Materials

H. D. Wehr, Chair Arcos Industries, LLC

J. J. DeLoach Jr., 1st Vice Chair Naval Surface Warfare Center

R. D. Fuchs, 2nd Vice Chair voestalpine Bohler Welding USA, Inc.

R. K. Gupta American Welding Society

T. Anderson ITW Welding North America

J. C. Bundy Hobart Brothers Company

J. L. Caron Haynes International, Incorporated

D. D. Crockett Consultant

R. V. Decker Weldstar

D. M. Fedor The Lincoln Electric Company

J. G. Feldstein Foster Wheeler North America

S. E. Ferree ESAB Welding and Cutting Products

D. A. Fink The Lincoln Electric Company

G. L. Franke Naval Surface Warfare Center

1. M. Henson Harris Products Group

2. D. Kiser Consultant

P. J. Konkol Concurrent Technologies Corporation

D. J. Kotecki Damian Kotecki Welding Consultants

1. G. Kvidahl Ingalls Shipbuilding

   1. Y. Lau Canadian Welding Bureau

      1. S. Lee Chevron

         T. Melfi The Lincoln Electric Company

2. T. Merlo RevWires, LLC

1. M. Merlo-Joseph Apeks Supercritical

   B. Mosier Polymet Corporation

   1. K. Mukherjee Siemens Energy, Inc.

      T. C. Myers Oceaneering Intervention Engineering

   2. A. Pletcher Select-Arc

K. C. Pruden BP Americas

K. Roossinck Ingalls Shipbuilding

P. K. Salvesen Det Norske Veritas (DNV)

K. Sampath Chart Industries, Incorporated

F. A. Schweighardt Air Liquid Industrial US LP

W. S. Severance ESAB Welding and Cutting Products

M. F. Sinfield Naval Surface Warfare Center

R. C. Sutherlin ATI Wah Chang

R. A. Swain Euroweld, Ltd.

J. Zhang Indalco Alloys—Lincoln Electric Company

Advisors to the AWS A5 Committee on Filler Metals and Allied Materials

R. Bateman Soldaduras West Arco SAS

J. E. Beckham Chrysler Group, LLC.

J. M. Blackburn Naval Sea Systems Command

M. L. Caruso Special Metals Welding Products Company

R. A. Daemen Consultant

B. S. Dauble Carpenter Technology Corporation

T. A. Davenport PRL Industries

D. A. DelSignore Consultant

J. DeVito Consultant

H. W. Ebert Consulting Welding Engineer

W. D. England ITW Welding North America

C. E. Fuerstenau Lucas-Milhaupt, Inc.

J. P. Hunt Consultant

S. Imaoka KOBE Steel, Ltd.

S. J. Knostman Hobart Brothers

W. A. Martilla WAMcom Consulting, LLC.

R. Menon Stoody Company

C. L. Null Consultant

M. P. Parekh Consultant

J. W. Price DMI Industries

M. A. Quintana The Lincoln Electric Company

M. J. Sullivan NASSCO

M. D. Tumuluru U.S. Steel

H. J. White PCC Energy Group

AWS A5K Subcommittee on Titanium and Zirconium Filler Metal

R. C. Sutherlin, Chair ATI Wah Chang

1. L. Diaz, Secretary American Welding Society

   1. S. Delmore CK Worldwide, Incorporated

      B. Krueger Los Alamos National Laboratory

      K. T. Tran Naval Surface Warfare Center

      1. E. Trepus Boeing Research and Technology

         
         

         Advisors to the AWS A5K Subcommittee on Titanium and Zirconium Filler Metal

      2. Kotaki Consultant

J. A. McMaster MC Consulting

S. D. Sparkowich Nerac, Incorporated

Foreword

This foreword is not part of AWS A5.24/A5.24M:2014, Specification for Zirconium and Zirconium-Alloy Welding Electrodes and Rods, but is included for informational purposes only.

This specification makes use of both U.S. Customary Units and the International System of Units (SI). The measurements are not exact equivalents; therefore, each system must be used independently of the other, without combining values in any way when referring to filler metal properties. In selecting rational metric units, the AWS A1.1, Metric Practice Guide for the Welding Industry and International Standard ISO 544, Welding consumables—Technical delivery conditions for welding filler metals—Type of product, dimensions, tolerances, and markings, are used where suitable. Tables and fig- ures make use of both U.S. Customary and SI Units, which with the application of the specified tolerances provides for interchangeability of products in both the U.S. Customary and SI Units.

The first Specification for Zirconium and Zirconium Bare Welding Rods and Electrodes was prepared by the Subcommittee on Zirconium Filler Metal in 1976. This edition originally had three electrode classifications, ERZr1, ERZr2 and ERZr3. In the 1979 edition, the very pure grade of zirconium (ErZr1) was deleted and an additional grade, ERZr4 (with 2%–3% Niobium), was added to the specification and includes an addition to the check analysis tolerance by the joint AWS Subcommittee on Titanium and Zirconium Filler Metals. In 1990, the specification was revised to include the Acceptance and Certification clauses to the appendix. In 2005, the specification was revised to include an oxy- gen range for all electrode classifications. This was done to take into account the oxygen pickup during the zirconium welding process in order to create final weld strength similar to that of the parent metal. Additionally, the 2005 A5.24 specification was the first to use both the U.S. Customary Units and the International System Units (SI). AWS A5.24/A5.24M:2014, Specification for Zirconium and Zirconium-Alloy Welding Electrodes and Rods, is the fourth revi- sion of the document. This revision primarily includes updates to the reference documents.

A vertical line in the margin or underlined text in clauses, tables, or figures indicates an editorial or technical change from the 2005 edition.

Previous editions of the document are as follows:

AWS A5.24-76, Specification for Zirconium and Zirconium Alloy Bare Welding Rods and Electrodes AWS A5.24-79, Specification for Zirconium and Zirconium Alloy Bare Welding Rods and Electrodes ANSI/AWS A5.24-90, Specification for Zirconium and Zirconium Alloy Welding Electrodes and Rods AWS A5.24/A5.24M:2005, Specification for Zirconium and Zirconium-Alloy Welding Electrode and Rods

Comments and suggestions for the improvement of this standard are welcome. They should be sent to the Secretary, AWS A5 Committee on Procedure and Performance Qualification, American Welding Society, 8669 NW 36 St, #130, Miami, FL 33166.

Table of Contents

Page No.

Personnel iv

Foreword vi

List of Tables viii

1. Scope 1

2. Normative References 1

3. Classification 2

4. Acceptance 2

5. Certification 2

6. Rounding Procedure 2

7. Summary of Tests 4

8. Retest 4

9. Chemical Analysis 4

10. Method of Manufacture 4

11. Standard Sizes and Lengths 4

12. Finish and Uniformity 4

13. Standard Package Forms 4

14. Winding Requirements 6

15. Filler Metal Identification 6

16. Packaging 6

17. Marking of Packages 7

Nonmandatory Annexes 9

Annex A—Guide to AWS Specification for Zirconium and Zirconium-Alloy Welding Electrodes and Rods 9

Annex B—Guidelines for the Preparation of Technical Inquiries for AWS Technical Committees 15

AWS Filler Metal Specifications by Material and Welding Process 17

AWS Filler Metal Specifications and Related Documents 19

List of Tables

Table Page No.

1. Chemical Composition Requirements for Zirconium and Zirconium-Alloy Electrodes and Rods 3

2. Standard Sizes and Lengths 5

3. Standard Packages, Dimensions, and Weights 5

A1 Specification Cross Index—Including Discontinued Zirconium Electrodes 10