The Formability of Ti Stabilized Low C, N-17%Cr Stainless Steel Sheets

Abstract

Press formability of Ti-stabilized low C, N-17% Cr stainless steel is evaluated by various model forming experiments in comparison with SUS430 and SUS304.
Ti-stabilized steel is superior to SUS430 but inferior to SUS304 in ductility, deep drawability, and secondary formability. Ti-stabilized steel achieves deep drawability almost equal to that of SUS304 when a new ester type synthetic lubricant is applied.
Ti-stabilized steel is very supeior to SUS430 in ridging but this steel is not immune from surface wrinkle after pressing because there is a tendency of easy grain coarsning. The surface wrinkle appears as a result of simultaneous occurrence of ridging and orange peal and increases linearlly as the equivalent strain of the deformed part increases. The tendency is improved by a single cold rolling process with high cold reduction.