PROBLEM TO BE SOLVED: To provide a corrosion resistant steel material having an epoxy-based coated film on a surface, and suitable for a ballast tank of marine vessels.SOLUTION: There is provided a corrosion resistant steel material for a ballast tank containing C, Si, Mn, S, Cu, Ni, Al, Mg, O, further at least one of Sn and Sb, by mass%, S:0.001 to 0.020%, Cu:0.10 to 0.60%, Mg:0.0012 to 0.0030%, having the content of Cu and the content of Mg satisfying 70<220, and an epoxy-based coated film on a surface. One or more kind of Cr, Mo, W, Ti, Zr, Nb, V, B, Ca, REM, Y, and Ta may be contained depending of needs.SELECTED DRAWING: None
【課題】船舶のバラストタンクに好適な、表面にエポキシ系塗膜を有する耐食鋼材を提供する。【解決手段】C、Si、Mn、S、Cu、Ni、Al、Mg、Oを含有し、更に、Sn、Sbの少なくとも一方を含有し、質量%で、S:0.001〜0.020%、Cu:0.10〜0.60%、Mg:0.0012〜0.0030%を含有し、前記Cuの含有量と前記Mgの含有量とが、70<Cu/Mg<220を満足し、表面にエポキシ系塗膜を有するバラストタンク用耐食鋼材。必要に応じて、Cr、Mo、W、Ti、Zr、Nb、V、B、Ca、REM、Y、Taの1種又は2種以上を含有させてもよい。【選択図】なし
CORROSION RESISTANT STEEL MATERIAL FOR BALLAST TANK
バラストタンク用耐食鋼材
2018-11-15
Patent
Electronic Resource
Japanese
IPC: | C22C Legierungen , ALLOYS / B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM , Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse / B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS |
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