| 摘要 |
The present invention relates to a low chrome ferritic stainless steel with improved corrosion resistance and ridging resistance satisfying the below formula (1) or formula (3), and comprising: 10.0% to 15.0% of Cr, 0.01% to 0.05% of C, 0.01% to 0.05% of N, 0.7% to 2.0% of Si, 0.01% to 2.0% of Mn, less than or equal to 0.035% of P, less than or equal to 0.01% of S, residual Fe, and impurities, by weight%. Formula (1) : 0.45 <= 10*Si/Cr <= 1.7 Formula (2) : 0.03 <= [C+N] (wt%) <= 0.07 Formula (3) : 25 <=γmax (%) <= 55 (In here,γmax (%)= 420C (wt%) + 470N (wt%) + 23Ni (wt%) + 9Cu (wt%) + 10Mn (wt%) + 180 - 11.5Cr (wt%) - 11.5Si (wt%) - 12Mo (wt%) - 52Al (wt%)). [Reference numerals] (AA) Depth |
