STEEL FOR CRUDE OIL TANK, ITS PRODUCTION METHOD, CRUDE OIL TANK AND ITS CORROSION PREVENTION METHOD,申请号JP20030138374-传众专利搜索

STEEL FOR CRUDE OIL TANK, ITS PRODUCTION METHOD, CRUDE OIL TANK AND ITS CORROSION PREVENTION METHOD

申请公布号：JP2004204344(A)

申请号：JP20030138374

申请日期：2003.05.16

申请公布日期：2004.07.22

申请人：

NIPPON STEEL CORP

发明人：USAMI AKIRA;KATO KENJI;HASEGAWA TOSHINAGA;SHISHIBORI AKIRA

分类号：C21D8/02;C22C38/00;C22C38/02;C22C38/04;C22C38/08;C22C38/12;C22C38/14;C22C38/16;C22C38/60;C23F11/00;(IPC1-7):C22C38/00

主分类号：C21D8/02

摘要：PROBLEM TO BE SOLVED: To provide steel for a crude oil tank which is excellent in resistances against general and local corrosion concerning crude oil corrosion in the oil tank made of steel and inhibits generation of corrosion products (sludge) containing solid S, a production method for the steel, the crude oil tank and a corrosion prevention method for the crude oil tank. SOLUTION: The steel comprises, by mass, 0.001-0.2% C, 0.01-2.5% Si, 0.1-2% Mn,≤0.03% P,≤0.007% S, 0.01-1.5% Cu, 0.001-0.3% Al and 0.001-0.01% N as basic components and further comprises at least one of 0.01-0.2% Mo and 0.01-0.5% W, wherein the total content of solid solution Mo and solid solution W is preferably≥0.005%. The steel exerts general and local corrosion resistances in crude oil tank environment and inhibits generation of the corrosion products (sludge) containing solid S. COPYRIGHT: (C)2004,JPO&NCIPI