Can-making steel sheet
AssigneeKawasaki Steel Corporation
InventorsHideo Kuguminato, Toshikatsu Kato, Chikako Fujinaga, Kyoko Hamahara
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Abstract
There is provided an ultra-thin and high strength three-piece can-making plated steel sheet which is excellent in weldability and flange forming processibility containing C .ltoreq. about 0.004 wt %, Si.ltoreq. about 0.03 wt %, Mn: about 0.05-0.6 wt %, P.ltoreq. about 0.02 wt %, S.ltoreq. about 0.02 wt %, N.ltoreq. about 0.01 wt % Al: about 0.005-0.1 wt %, Nb: about 0.001-0.1 wt % and the balance of inevitable impurities. The steel sheet has a maximum recrystallization grain size of 30 .mu.m or less and a ratio of area of 50% or more which is occupied by recrystallization grains of about 5-25 .mu.m.
Claims3
An ultra-thin and high strength can-making steel sheet excellent in weldability and flange forming processibility comprising C.ltoreq. about 0.004 wt %, Si.ltoreq. about 0.03 wt %, Mn:
- about 0.05-0.6 wt %, P.ltoreq. about 0.02 wt %, S.ltoreq. about 0.02 wt %, N.ltoreq. about 0.01 wt %, Al:
- about 0.005-0.1 wt %, and Nb:
- about 0.001-0.1 wt % and the balance Fe, said sheet having a maximum recrystallization grain size of about 30 .mu.m or less, and said sheet having a ratio of area which is occupied by recrystallization grains having crystallized grain sizes of about 5-25 .mu.m, of at least about 50%.
Dependencies are inferred from the claim text.