The Symposium on Testing for Prediction of Material Performance in Structures and Components was presented in two parts; Part I was presented in Anaheim, Calif., 21-23 April 1971 and Part II was presented in conjunction with the Seventy-fourth Annual Meeting of the American Society for Testing and Materials held in Atlantic City, N. J., 29 June-1 July. The symposium was sponsored by the ASTM Committee on Simulated Service and Performance Testing in cooperation with the National Materials Advisory Board and Technical Cooperation Program, Panel P-4. R. S. Shane, National Materials Advisory Board, Washington, D. C, served as symposium and program chairman.