There are seven papers in this publication. Four deal with the influence of such elements as nitrogen and niobium on primarily elevated temperature behavior of AISI stainless steel Types 304, 304L, 316, and 316H. The other three papers deal with the effects of intentionally added or controlled as well as residual element content on weldability and subsequent mechanical properties of weld metal. Will be of particular interest to the designers, metallurgists, and suppliers of these materials, who must concern themselves heat-to-heat variability and ways of improving properties.