Steel sheet and method for manufacturing the same
AssigneeJfe Steel Corporation
InventorsTomohiro AOYAMA, Shinichi FURUYA, Takeshi MATSUDA, Haruo NAKAMICHI
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Abstract
A steel sheet having a lubrication film that is to be subjected to complex forming in which press forming is difficult, and a method for manufacturing the steel sheet, are disclosed. The steel sheet has an organic resin coating film which has an indentation reduced Young's modulus of 20 GPa or higher and 50 GPa or lower and an indentation hardness of 0.5 GPa or higher and 1.5 GPa or lower or which has an indentation reduced Young's modulus of 10 GPa or higher and less than 20 GPa and an indentation hardness of 0.2 GPa or higher and 0.5 GPa or lower and which has a coating weight per side of 0.2 g/m2 or more and 2.0 g/m2 or less on a surface thereof.
Claims14
A steel sheet having an organic resin coating film which has an indentation reduced Young's modulus of 20 GPa or higher and 50 GPa or lower and an indentation hardness of 0.5 GPa or higher and 1.5 GPa or lower and which has a coating weight per side after drying of 0.2 g/m2 or more and 2.0 g/m2 or less on at least one surface thereof.
A steel sheet having an organic resin coating film which has an indentation reduced Young's modulus of 10 GPa or higher and less than 20 GPa and an indentation hardness of 0.2 GPa or higher and 0.5 GPa or lower and which has a coating weight per side after drying of 0.2 g/m2 or more and 2.0 g/m2 or less on at least one surface thereof.
Dependencies are inferred from the claim text.