Stock material or miscellaneous articles – All metal or with adjacent metals – Having composition – density – or hardness gradient
Patent
1994-06-24
1996-03-19
Zimmerman, John
Stock material or miscellaneous articles
All metal or with adjacent metals
Having composition, density, or hardness gradient
428658, 428659, 428679, 428941, B32B 1518
Patent
active
055002900
ABSTRACT:
A surface treated steel sheet comprises: a steel sheet containing C, Si, Mn, P, S, Ni, Ti, Cu and B; a diffused alloy layer containing Fe, Ni, and P; and a zinc coating layer formed on the diffused alloy layer.
A method for producing a surface treated steel sheet comprises the steps of: preparing a steel sheet; coating the steel sheet with a Ni-P coating layer; heat-treating the steel sheet coated with the Ni-P coating layer; and forming a zinc coating layer on the diffused alloy layer.
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Abe Masaki
Ando Satoru
Kido Akimasa
Matsuki Yasuhiro
Morita Masaya
NKK Corporation
Zimmerman John
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