RatnerPrestia
Steel sheet for hot press-forming, method for manufacturing the same, and method for producing hot press-formed parts using the same
The invention provides a steel sheet for hot press-forming that can reliably give hot press-formed parts having excellent paint adhesiveness, perforation corrosion resistance and joint corrosion resistance, and also provides a method for manufacturing the steel sheet for hot press-forming, and a method for producing hot press-formed parts using the steel sheet for hot press-forming. The steel sheet for hot press-forming includes a base steel sheet and a Zn-based coating layer with a mass of coating of 10 to 90 g/m2 on the base steel sheet, wherein the average ferrite grain diameter in the surface microstructure of the base steel sheet is not more than 20 μm.
JFE Steel Corporation
C C C C C C C C C Y B C C C C C C C C C C B C C C
C21D C21D C21D C23C C22C C23C C22C C22C C22C Y10T B32B C22C C21D C21D C21D C23C C22C C22C C22C C22C C22C B21D C23C C22C C21D
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Seiji Tatsuya Satoru
Nakajima Miyoshi Ando