CPC C21D 9/46 (2013.01) [B21B 15/0085 (2013.01); B23K 11/0073 (2013.01); B23K 11/04 (2013.01); B23K 26/206 (2013.01); C21D 8/0226 (2013.01); C21D 8/0236 (2013.01); C21D 9/50 (2013.01); C22C 38/001 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/08 (2013.01); C22C 38/12 (2013.01); C22C 38/14 (2013.01); C22C 38/16 (2013.01); C22C 38/18 (2013.01); C23G 1/00 (2013.01); B23K 2103/04 (2018.08); C21D 2211/008 (2013.01)] | 16 Claims |
1. A steel sheet welded and then cold rolled to a thickness between 0.5 mm and 3 mm, the steel sheet comprising:
a base metal and a welded joint;
a deformation ratio created by cold rolling in the base metal being equal to εMB;
a deformation ratio created by cold rolling in the welded joint being equal to εS;
and
a direction of the welded joint extending perpendicular to a direction of cold rolling.
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