AWS D3.9:2010

An American National Standard

Specification for Classification of Weld-Through Paint Primers

AWS D3.9:2010

An American National Standard

Approved by the American National Standards Institute

February 3, 2010

Specification for Classification of Weld-Through Paint Primers

1st Edition

Prepared by the American Welding Society (AWS) D3 Committee on Welding in Marine Construction

Under the Direction of the AWS Technical Activities Committee

Approved by the AWS Board of Directors

Abstract

This specification prescribes the requirements for the classification of weld-through paint primers. The classification is based on paint film thickness and welding procedure. Manufacturers may classify their products to different film thick- nesses or welding procedures if they provide the details of their tests.

International Standard Book Number: 978-0-87171-771-9

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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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On occasion, text, tables, or figures are printed incorrectly, constituting errata. Such errata, when discovered, are posted on 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, Attention: 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, 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 D3 Committee on Welding in Marine Construction. It must be reviewed every five years, and if not revised, it must be either reaffirmed or withdrawn. Comments (recommendations, addi- tions, 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 D3 Committee on Welding in Marine Construction and the author of the comments will be informed of the Committee’s response to the comments. Guests are invited to attend all meetings of the AWS D3 Committee on Welding in Marine Construction to express their comments ver- bally. Procedures for appeal of an adverse decision concerning all such comments are provided in the Rules of Operation of the Technical Activities Committee. A copy of these Rules can be obtained from the American Welding Society, 550 N.W. LeJeune Road, Miami, FL 33126.

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Personnel

AWS D3 Committee on Welding in Marine Construction

M. Ludwig, Chair Fronius USA

M. J. Sullivan, Vice Chair NASSCO

1. A. Collins, 2nd Vice Chair Maine Maritime Academy

   1. C. McGrath, Secretary American Welding Society

      G. Baldree Keppel-AmFELS

      T. W. Burns AlcoTech Wire Corporation

      G. M. Cain Oxylance Corporation

   2. B. Champney Nelson Stud Welding

   3. Cottle DC Fabricators

B. H. Halverson Marinette Marine Corporation

D. R. Haydock General Atomics Electromagnetic

R. D. Holdsworth Management Systems Technology

1. H. Huelskamp Bay Ltd

   1. L. Johnson Todd Pacific Shipyard

   2. G. Kvidahl Northrop Grumman Shipbuilding

H. W. Lehman Bechtel

1. W. Mumaw Nelson Stud Welding

   1. E. Pollard Machinists, Incorporated

   2. Ulinski Wolf Robotics

Advisors to the AWS D3 Committee on Welding in Marine Construction

1. Anderson ESAB

   1. Ivanov Consultant

   2. Iwata National Maritime Research Institute

A. W. Johnson A W Johnson & Associates

1. Masubuchi MIT

2. Milacek Textron

C. L. Null Consultant

L. D. Parkinson PCS Marine

1. M. Sawhill, Jr. Sawhills Consulting

   1. T. Sheppard The DuRoss Group, Incorporated

      
      

      AWS D3E Standing Task Group on Weld-Through Paint Primers

      L. G. Kvidahl, Chair Northrop Grumman Shipbuilding

      J. E. Kelly, Vice Chair International Paint Inc

   2. C. McGrath, Secretary American Welding Society

      1. H. Devletian Portland State Engineering

      2. L. Johnson Todd Shipyard Seattle

G. C. Koprowitz B&WY12 LLC

M. J. Ludwig Fronius USA

J. E. McCarthy Ameron International

D. R. Miller ABS Pacific Materials Department

T. Neale Blastech Mobile LLC

S. Pendry The Sherwin-Williams Corporation

M. J. Sullivan NASSCO

E. Wolf Copperweld

Advisors to the AWS D3E Standing Task Group on Weld-Through Paint Primers

D. Y. Ku Consultant

C. L. Null Consultant

J. M. Sawhill, Jr. Sawhills Consulting

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Foreword

This foreword is not part of AWS D3.9:2010, Specification for Classification of Weld-Through Paint Primers, but is included for informational purposes only.

In 1996, the AWS Committee on Welding in Marine Construction established a Subcommittee on Weld-Through Paint Primers and requested that they develop a standard to classify weld-through paint primers. This document is the first edi- tion of the standard.

Comments and suggestions for the improvement of this standard are welcome. They should be sent to the Secretary, AWS D3 Committee on Welding in Marine Construction, American Welding Society, 550 N.W. LeJeune Road, Miami, FL 33126.

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Introduction

Industries, notably shipbuilding firms, have introduced weld-through paint primers in plate and shape fabrication lines in order to increase productivity. The ability to weld directly through these coatings permits reductions in construction costs and improvements in schedule times.

An obstacle to the immediate introduction of this technology into the welding operations has been the inconsistent qual- ity of welds deposited on the primed base metal. By using a standard test procedure to classify weld-through paint primers, potential users will be able to determine the baseline levels of painting and welding required for their applica- tions and to specify these requirements to their coating supplier.

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Table of Contents

Page No.

Personnel v

Foreword vii

Introduction ix

List of Tables xii

List of Figures xii

1. Scope 1

2. Normative References 1

3. Terms and Definitions 2

4. Test Procedure 2

5. Inspection 3

6. Classification 4

7. Test report 5

8. Certification 5

9. Renewal of Certification 5

Annex A (Normative)—Welding Procedures 7

Annex B (Informative)—Guidelines for the Preparation of Technical Inquiries 11

Annex C (Informative)—List of AWS Safety and Health Fact Sheets 13

List of AWS Documents on Welding in Marine Construction 15

List of Tables

Table Page No.

1 Primer Thickness Classification 4

List of Figures

Figure Page No.

1 Test Assembly for Classification of Weld-Through Paint Primers 3

Specification for Classification of Weld-Through Paint Primers

1. Scope

   1. This standard specifies the requirements for the classification of weld-through paint primers only. The paint primers are classified based on the maximum coating thickness for successful welding and the welding procedure used during the classification test. This Standard provides a system for paint manufacturers to classify the weldability features of weld- through paint primers. This Standard is limited to weld-through paint primers only and does not include galvanized or other types of protective coatings.

   2. This standard makes sole use of the U.S. Customary units. Approximate mathematical equivalents in the International System of Units (SI) are provided for comparison in parentheses or in appropriate columns in tables and figures.

   3. This Standard is not a safety document. Safety and health issues and concerns are beyond the scope of this standard, and therefore are not fully addressed herein. Safety and health information is available from other sources, including, but not limited to, ANSI Z49.1, Safety in Welding, Cutting, and Allied Processes, and applicable federal and state regulations.

      The application of coatings and subsequent processing of coated products should observe safety and health precautions in the country-specific and supplier-specific Material Safety Data Sheets (MSDS) for each coating.

      In addition to ANSI Z49.1, the AWS also publishes Safety and Health Fact Sheets.1 These fact sheets are listed in Annex C.

      Employers are also referred to the US Department of Labor Regulations. Particular reference is made to OSHA Shipyard Employment Standard 29CFR1915.53,2 Welding, Cutting and Heating in Way of Preservative Coatings and OSHA Construction Regulation 29CFR1926.354, Welding, Cutting, and Heating in Way of Preservative Coatings.

      
      

2. Normative References

The following standards contain provisions which, through reference in this text, constitute mandatory provisions of this AWS Standard. For undated references, the latest edition of the referenced standard shall apply. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply.

ASTM Documents3:

ASTM A36/A36M, Standard Specification for Carbon Structural Steel

ASTM A131/A131M, Standard Specification for Structural Steel for Ships

ASTM D1186, Nondestructive Measurement of Dry Film Thickness of Nonmagnetic Coatings Applied to a Ferrous Base

ASTM D4417, Field Measurement of Surface Profile of Blast Cleaned Steel

1 AWS standards are published by the American Welding Society, 550 N.W. LeJeune Rd., Miami, Fl 33126.

2 Code of Federal Regulations (CFR) standards are published by the U.S. Government Printing Office, · 732 N. Capitol Street, NW,· Washington, DC 20401.

3 ASTM standards are published by the ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA 19428.