| abstract |
(57) [Summary] [Purpose] To provide a thin steel sheet having excellent properties such as deep drawing property and overhanging property, which are used in automobiles, furniture, home appliances and the like. [Structure] C: 0.0040% or less by mass ratio, N: 0.0040% or less, Mn: 0.05 to 0.4%, S: 0.015% or less, acid-soluble Al: 0.005-0.10 0%, Ti: 0.01 to 0.05%, Nb: 0.003 ~ 0.03%, B: 0.0001 to 0.0010%, the solid lubricant is applied to the surface of the cold rolled steel sheet consisting of the balance unavoidable impurity elements. [Effect] It is possible to obtain a thin steel sheet that can form a difficult-to-form part that is conventionally impossible to form and that requires a complicated and large processing amount as an integral product without dividing it into a plurality of members. |