| 摘要 |
PROBLEM TO BE SOLVED: To provide ferritic stainless steel for an EGR (exhaust gas recirculation) cooler, free from peeling of oxidized scale generated at high temperature, even suffering from rapid cooling from a high temperature, and excellent in corrosion resistance of brazed parts.SOLUTION: This ferritic stainless steel for EGR cooler includes, by mass, ≤0.02% of C; 0.3-2% of Si; <0.45% of Mn; ≤0.040% of P; >0.001% and ≤0.005% of S; 0.01-0.1% of Al; ≤0.02% of N; 14-30% of Cr; ≥0.3% and ≥15(C+N), ≤1.0% of Nb; and ≤0.01% of Ti; further Cr and Si satisfy 18-30% of Cr+6Si; and Mn and S satisfy Mn×S≤0.0005; and the balance Fe with inevitable impurities. |
