NF EN ISO 2566-2
Steel. Conversion of elongation values. Part 2 : austenitic steels.
<p>This document specifies a method of converting room temperature percentage elongations after fracture obtained on various proportional and non-proportional gauge lengths to other gauge lengths.</p> <p>Formula (1), on which conversions are based, is considered to be reliable when applied to austenitic stainless steels within the tensile strength range 450 to 750 N/mm<sup>2</sup> and in the solution treated condition.</p> <p>These conversions are not applicable to:</p> <p>a) cold reduced steels;</p> <p>b) quenched and tempered steels;</p> <p>c) non-austenitic steels.</p> <p>These conversions are not applicable when the gauge length exceeds 25√<em>S</em><sub>0</sub> or where the width to thickness ratio of the test piece exceeds 20.</p>
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