Corrosion resistance, the ferritic stainless steel welded tube null which is superior in flat processability and flared

摘要

PURPOSE:To manufacture a ferritic stainless steel for a resistance welded tube excellent in corrosion resistance and workability by preparing a ferritic stainless steel having a specified compsn. in which the total content of C and N is regulated. CONSTITUTION:A ferritic stainless steel contg., by weight, 0.005 to 0.012% C, 0.005 to 0.010% N as well as =0.019% C+N, 0.3 to 0.7% Si, =0.5% Mn, =0.025% P, =0.005% S, 10 to 12% Cr, 0.5% Ni, =0.03% Al and 0.1 to 0.3% Ti and the balance Fe with inevitable impurities is prepd. In this way, the ferritic stainless steel excellent in workability (flatness and expansibility) and corrosion resistance as a resistance welded tube can be obtd. at a low cost.