As boiler conditions have become more aggressive over the years, nickel base alloy claddings have become more commonly used, not just for repair and maintenance purposes, but also as a cost effective solution for new boiler installations. Recent field and laboratory data have been generated for materials designed to resist the rigors of high temperature corrosion in coal fired boilers. These results and experiences will be discussed, with particular emphasis upon weld overlay materials. Physical and mechanical properties which enhance the performance of such materials in boiler applications will be presented as well.

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