Patent ID: 11926120
Assignee: NIPPON STEEL CORPORATION
Field: Materials, metallurgy (Chemistry)
Classification: CPC B  C | IPC B  C

Claim 0:
1. A steel sheet for hot stamping comprising:
in this order,
a base material;
an Al—Si alloy plating layer in which an Al content is 75 mass % or more, a Si content is 3 mass % or more and a total of the Al content and the Si content is 95 mass % or more; and
a Ni plating layer having a Ni content of more than 92 mass %;
wherein the base material has a chemical composition of, by mass %:
C: 0.01% or more and less than 0.70%;
Si: 0.005% to 1.000%;
Mn: 0.40% to 3.00%;
Nb: 0.010% to 0.200%;
a solid solution of Nb: 0.010% to 0.150%;
sol. Al: 0.00020% to 0.50000%;
P: 0.100% or less;
S: 0.1000% or less;
N: 0.0100% or less;
Cu: 0% to 1.00%;
Ni: 0% to 1.00%;
V: 0% to 1.00%;
Ti: 0% to 0.150%;
Mo: 0% to 1.000%;
Cr: 0% to 1.000%;
B: 0% to 0.0100%;
Ca: 0% to 0.010%;
REM: 0% to 0.300%; and
a remainder: Fe and an impurity,
the Al—Si alloy plating layer has a thickness of 7 to 148 μm, and
the Ni plating layer has a thickness of more than 200 nm and 2500 nm or less.