scope:

The present report, prepared under the auspices of the Welding Research Council, is a comprehensive review of information on the welding of Type 347 stainless steel piping and tubing. Both published and previously unpublished data is included. An account is given of the origin and development of columbium stabilized stainless steel to provide familiarity with the actual chemical composition of the Type 347 grade as it is currently produced. Facts are supplied on microstructure and properties of wrought material, castings and weld metal which later help explain the properties of welded joints. The main portion of the report is devoted to welding procedures and joint properties. Weld defects are thoroughly covered as to cause and cure.