Transcription of NiDI - Nickel Institute
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NiDI - Nickel Institute
Pay attention to dissimilar-metal welds Guidelines for welding dissimilar metals Reprinted with permission from Chemical Engineering Progress May 1991 1991 American Institute of Chemical Engineers All rights reserved NiDINICKEL DEVELOPMENT INSTITUTENiDI Reprint Series NO 14 018 Richard E. Avery The material presented in this publication has been prepared for the general information of the reader and should not be used or relied on for specific applications without first securing competent advice. The Nickel Development Institute , its members, staff and consultants do not represent or warrant its suitability for any general or specific use and assume no liability or responsibility of any kind in connection with the information herein. 1 Pay Attention to Dissimilar-Metal WeldsRecent experience with boiler tubing reveals how welding practices affect weld joint performance in service.
or flux-cored wires should have low moisture content to prevent hydro-gen-associated defects in the low-alloy HAZ. Coating moisture levels acceptable for welding austenitic al-loys may cause hydrogen-related problems such as underbead crack-ing in the HAZ of a low-alloy steel. Electrodes can be rebaked in accor-dance with manufac-
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