This special technical publication, Formability Topics—Metallic Materials, contains papers presented at the 1977 Symposium on Formability, held in Toronto, Canada, on 4 May 1977. The symposium was sponsored by the American Society for Testing and Materials through its Committee E28 on Mechanical Testing. B. A. Niemeier, Reynolds Metals Company, and A. K. Schmieder, General Electric Company, presided as cochairmen of the symposium; B. A. Niemeier and J. R. Newby, Armco Steel Corporation, served as editors of this publication.