| 摘要 |
<p>A martensitic stainless steel having excellent non-rusting properties for use in disk brakes which is characterized by containing, in terms of mass%, 0.01-0.10% C, 0.05-2% Si, 0.2-2.0% Mn, up to 0.01% S, 0.005-0.025% N, 10-14% Cr, 0.02-2% Ni, 0.001-0.1% Al, and up to 0.5% V, with C+N being 0.06-0.1%, further containing either (i) one or more of P, As, Sb, and Bi in a total amount of 0.05-0.5% or (ii) 0.005-0.05% P and 0.005-0.05% Bi, provided that the sum of both is 0.01-0.05%, and optionally further containing Cu, Ti, Mo, and Nb in given amounts, with the remainder being Fe and unavoidable impurities. It is further characterized in that ?p expressed by the following (equation 1) is 80 or larger. ?p=420[%C]+470[%N]+23[%Ni]+9[%Cu]+7[%Mn]-11.5[%Cr]-11.5[%Si]-52[%Al]-12[%Mo]-47[%Nb]+189 (equation 1)</p> |
