Colored stainless steel plate, colored stainless steel coil and manufacturing method thereof

Abstract

In press molding, a colored stainless steel plate and a colored stainless steel coil which are excellent in galling resistance and moldability and have high strength in molded articles, and a method of manufacturing the same. A color coating layer 11 is formed on the surface of a stainless steel plate 10 by a chemical coloring method or an electrolytic coloring method. Thereafter, a colored stainless steel plate 1 having the color coating layer is cold-rolled, the thickness of the color coating layer 11 is adjusted to 0.05 μm or more to 1.0 μm or less, and an entire plate thickness is adjusted to 0.5 mm or less. By the cold rolling a Vickers hardness Hv is 250 or more to 550 or less to form a deformed band 5. As surface roughness, an arithmetic average roughness Ra is adjusted to 0.05 μm or more to 5.0 μm or less. In this manner, the strength and rigidity of a thin colored stainless steel plate can be secured, and a color stainless steel plate 1 and a colored stainless steel coil which do not easily cause galling and are excellent in press moldability can be obtained.

Dependencies are inferred from the claim text.