Correlation of Bendability of Materials With Their Tensile Properties

[+] Author and Article Information
J. Datsko, C. T. Yang

University of Michigan, Ann Arbor, Mich.

J. Eng. Ind 82(4), 309-313 (Nov 01, 1960) (5 pages) doi:10.1115/1.3664236 History: Received August 14, 1959; Online December 09, 2011


With the advent of high-temperature-resistant materials in the sheet-metal industry, it is becoming increasingly important to treat the subject of minimum or “critical” bend radius analytically. A simple equation is presented that correlates the minimum bend radius with the percentage reduction of area of the material. The theoretical derivation as well as experimental data are given, with very good agreement between the two. Consequently, it is possible to predict the minimum bend radius for a specific material, provided that the percentage reduction of area, as determined by a standard tensile test, is known. The relationship applies equally well to metals and nonmetals.

Copyright © 1960 by ASME
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