| 摘要 |
[Problems] To provide a ferritic stainless steel in which grain coarsening is prevented in the case that the stainless steel is exposed to high temperature brazing as a heat exchanger member. [Means for Resolution] A ferritic stainless steel material for brazing, having partially recrystallized structure and composition including, in % by mass, C:0.03% or less, Si: more than 0.1 to 3%, Mn: 0.1 to 2% , Cr: 10 to 35%, Nb: 0.2 to 0.8%, N: 0.03% or less, if necessary, at least one of Mo, Cu, V and W: 4% or less in total, at least one of Ti and Zr: 0.5% or less in total, at least one of Ni and Co: 5% or less in total, or at least one of Al: 6% or less, REM (rare earth metal): 0.2% or less and Ca: 0.1% or less, the remainder being Fe and unavoidable impurities, wherein area ratio in percentage of recrystallized grains formed by heating after cold working is from 10 to 80%. |
