! iThe influence of specimen thickness and width on the elongation in 2 in,~•.f-w8"s studied on copper, AI~~ .. }.g20 steel r ':7 and ~~~.:~~r.~ated•-5i.i_te~k:> J The results conform approximately to Templin's equation, El • CAn • The constant n, a measure of the variation of elongation in 2 in. with specimen area, is shown to be related to the log of the ratio of the zero gage length (~~cture strain) to the infinite gage length (uniform strai9) elongations. irA method is shown for predicting the elongation in 2 inMor a bar of any thickness (or width) from measurements on another bar of the same material. The reason for specimen area being of greater importance than absolute values of width or thickness in controlling elongation is demonstrated by studying the strain distribution near the fractur~' The methods outlined in this report will enable specification and inspection personnel to determine how elongation values will vary with sheet thickness.