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This Bulletin consists of four Sections that present a preliminary evaluation of the current knowledge of the elevated temperature behavior of a bolted flanged connection. Section I - Introduction and Overview, by J. H. Bickford; Section II - Historical Review of a Problem Heat Exchanger, by J. R. Winter; Section III - Development of a Simple Finite Element Model of an Elevated Temperature Bolted Flanged Joint, by K. Hayashi and A. Chang; and Section IV - Discussion of the ABACUS Finite Element Analysis Results Relative to In-the-Field Observations and Classical Analysis, by J. R. Winter. Publication of this report - WRC Bulletin No. 341 was sponsored by the Subcommittee on Bolted Flanged Connections of the Pressure Vessel Research Committee of the Welding Research Council.