DLA Piper LLP (US)
Surface-treated steel sheet and method for manufacturing the same
The present invention provides a surface treated steel sheet including a steel sheet; a plating layer containing at least one metal selected from the group consisting of zinc and aluminum on a surface of the steel sheet; and a film on the plating layer, the film containing at least one metal selected from the group consisting of Al, Mg, and Zn, a tetravalent vanadium compound, and a phosphoric acid group. This surface treated steel sheet exhibits excellent corrosion resistance and excellent surface appearance without containing hazardous substances, such as hexavalent chromium, in the film.
JFE Steel Corporation
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Y10T Y10T C23C C23C Y10T C23C C23C C23C C23C C09D C23C Y10T C23C Y10T
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Akira Takafumi Keiji Yuichi Masaaki Toshiyuki Kazuhisa
Matsuzaki Yamaji Yoshida Fukushima Yamashita Okuma Okai