_STP_1421-2002.pdf

STP 1421 Outdoor Atmospheric Corrosion Herbert E.Townsend,editor ASTM Stock Number:STPI421 INTERNATIONAL ASTM 100 Barr Harbor Drive West Conshohocken,PA 19428-2959 Printed in the U.S.A.Library of Congress Cataloging-in-Publication Data Outdoor atmospheric corrosion/Herbert E.Townsend,editor.p.cm.-(STP;1421)ASTM Stock Number:STP1421.Includes bibliographical references and index.ISBN 0-8031-2896-7 1.Corrosion and anti-corrosives-Congresses.I.Townsend,Herbert E.,1938-ASTM special technical publication;1421 I1.TA418.74.O88 2002 620.11223-dc21 2002074627 Copyright?9 2002 AMERICAN SOCIETY FOR TESTING AND MATERIALS INTERNATIONAL,West Conshohocken,PA.All rights reserved.This material may not be reproduced or copied,in whole or in part,in any printed,mechanical,electronic,film,or other distribution and storage media,without the written consent of the publisher.Photocopy Rights Authorization to photocopy items for internal,personal,or educational classroom use,or the internal,personal,or educational classroom use of specific clients,is granted by the American Society for Testing and Materials International(ASTM)International provided that the appropriate fee is paid to the Copyright Clearance Center,222 Rosewood Drive,Danvers,MA 01923;Teh 978-750-8400;online:http:/ Review Policy Each paper published in this volume was evaluated by two peer reviewers and at least one edi-tor.The authors addressed all of the reviewers comments to the satisfaction of both the technical editor(s)and the ASTM International Committee on Publications.To make technical information available as quickly as possible,the peer-reviewed papers in this publication were prepared camera-ready as submitted by the authors.The quality of the papers in this publication reflects not only the obvious efforts of the authors and the technical editor(s),but also the work of the peer reviewers.In keeping with long-standing publication practices,ASTM International maintains the anonymity of the peer reviewers.The ASTM International Committee on Publications acknowledges with appreciation their dedication and con-tribution of time and effort on behalf of ASTM International.Printed in Phila.,PA August 2002 Foreword This publication,Outdoor Atmospheric Corrosion,contains papers presented at the sym-posium of the same name held in Phoenix,Arizona,on 8-9 May 2001.The symposium was sponsored by ASTM International Committee G1 on Corrosion of Metals.The symposium co-chairman was Herbert E.Townsend,Consultant,Center Valley,PA.Dedication to Seymour K.Coburn 1917-2001 This volume is dedicated to the memory of Seymour K.Coburn,who passed away on January 4,2001.Sy,as he was known to many of his friends,was born in Chicago in 1917.He received a BS in Chemistry from the University of Chicago in 1940,and an MS from Illinois Institute of Technology in 1951.After initially working for Minor laboratories,Lever Brothers,and the Association of American Railroads,he began a long career as a corrosion specialist at the Applied Research Laboratories of US Steel Corporation.Working with C.P.Larabee at US Steel,he became well known throughout the industry for pioneering their studies of the effects of alloying elements on the corrosion of steels.To do this,they studied the corrosion performance of hundreds of steel compositions exposed to rural,marine,and industrial environments,and defined the beneficial effects of copper,nickel,phosphorus,chromium,and silicon.No treatment of the subject is complete without a reference to their classic paper,The Atmospheric Corrosion of Steels as Influenced by Changes in Chemical Composition,that was presented in 1961 to the First International Congress on Metallic Corrosion in London.Sy went on to become one of the leading advocates of weathering steels,that is,low-alloy steels which develop a protective patina during exposure in the atmosphere so that they become corrosion-resistant without painting for use in applications such as bridges,utility towers,and buildings.He was US Steels research consultant for the John Deere Headquarters on Moline,IL,the first building constructed with weathering steel,as well as the Chicago Civic Center,and some of the first unpainted weathering steel bridges.In 1970,he was transferred to the Special Technical Services unit of US Steels Metal-lurgical Department where he became the top promoter and trouble-shooter for bridges and other weathering steel applications.But it was not until he attended a workshop of the Steel Structures Paint Council that he achieved his real goal in life-he became a teacher.An active member of ASTM International,Sy chaired Subcommittee GI.04 on Atmos-pheric Corrosion from 1964 to 1970,and was instrumental in organizing this subcommittee.He also was the prime mover in organizing and editing STP 646,Atmospheric Factors Affecting the Corrosion of Engineering Materials,and he chaired the symposium that led to that STP,a celebration of 50 years of exposure testing at the State College,PA,ASTM