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US 10,093,077 B2Granted
Steel sheet for hot press-forming
AssigneeJfe Steel Corporation
InventorsSeiji Nakajima, Minako Morimoto, Satoru Ando
Life of this patent
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Abstract
A steel sheet for hot press-forming having a first coating layer on a surface of the steel sheet, containing 60% or more by mass Ni and a remainder composed of Zn and incidental impurities, a coating mass thereof being more than 5 g/m2 and 50 g/m2 or less per side, and a second coating layer on the first coating layer, containing 10% to 25% by mass Ni and a remainder composed of Zn and incidental impurities, a coating mass thereof being 10 to 90 g/m2 per side.
Claims1
A steel sheet for hot press-forming comprising:
- a first coating layer on a surface of the steel sheet, consisting of 60% or more by mass Ni and a remainder composed of Zn and incidental impurities, a coating mass thereof being 6 g/m2 or more and 50 g/m2 or less per side;
- and
- a second coating layer on the first coating layer, containing 10% to 25% by mass Ni and a remainder composed of Zn and incidental impurities, a coating mass thereof being 10 to 90 g/m2 per side, the second coating layer being an outermost coating layer.
Dependencies are inferred from the claim text.