Material for roofing and facing
AssigneesNisshin Steel Co., Ltd., Shinsei Kogyo Co., Ltd.
InventorsHidetsugu Ohashi, Masayuki Kinugasa, Toshiro Adachi, Akihiro Nonomura, Waro Sekimoto
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Abstract
Stainless steel sheets are plated with zinc and further phosphated so as to have chromaticness indices of L=45-53, a=0.0-0.4 and b=1.3-4.4. Thus treated stainless steel sheets have sufficient strength, excellent corrosion resistance and a color well harmonizing with other building materials and environment and do not suffer from color change for a prolonged period of time.
Claims2
A roofing and facing material comprising a ferritic stainless steel sheet having a hot-dip plated zinc layer or layers capable of forming a corrosion product and which are phosphated so that the surface of the phosphated material and the corrosion product have a color tone defined by chromaticness indices of L=45-52, a=0.0-0.4, b=1.3-4.4.
Dependencies are inferred from the claim text.