| abstract |
It is an object of the invention to provide a kind of hot pressing steel plate, the resistance to liquid metal embrittlement of the hot pressing steel plate is excellent, even if under the short hot pressing condition of the handling time for the purpose of improving productivity ratio, will not also produce liquid metal embrittlement fracture.A kind of hot pressing steel plate, the hot pressing steel plate has the first coating in surface of steel plate, and first coating contains Ni more than 60 mass %, and remaining part is made up of Zn and inevitable impurity, and the adhesion amount of each one side is more than 5g/m 2 And be 50g/m 2 Hereinafter, the hot pressing steel plate has the second coating on the upper strata of above-mentioned first coating, and second coating contains the mass % of 10 mass %~25 Ni, and remaining part is made up of Zn and inevitable impurity, and the adhesion amount of each one side is 10g/m 2 ~90g/m 2 Below. |