| 摘要 |
PURPOSE:To obtain a steel sheet for EOE lid having excellent can-openability equal to that of Al EOE, by subjecting a hot- and cold-rolled steel sheet containing C, Mn, P, Al, and O each by a prescribed small amount to box annealing and then to temper rolling. CONSTITUTION:A steel consisting of <=0.03% C, 0.05-0.15% Mn, <=0.02% P, 0.02-0.10% Al, <=0.02% O, and the balance Fe with inevitable impurities is hot-rolled and cold-rolled. The resulting cold-rolled steel sheet is subjected to box-type recrystallization annealing and then to temper rolling at 21-45% draft. Further, it is preferable that the above box-annealing temp. is regulated to the range between the recrystallization temp. and 660 deg.C in order to reduce hardening of steel due to the infiltration of nitrogen in protective gas into steel. The steel sheet of this invention is suitably used for container such as food cans, beverage cans, etc.
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