Patent ID: 7883663
Filing Date: 2011-02-08
Classification: C21D,C22C

Abstract:
1. Low chromium stainless steel superior in grain boundary corrosion resistance of multipass weld heat affected zones and preferential corrosion resistance near weld zone fusion lines characterized by containing, by mass %, C: 0.03% or less, N: 0.004 to 0.02%, Si: 0.2 to 1%, Mn: over 1.5 to 2.5%, P: 0.04% or less, S: 0.03% or less, Cr: 10 to 15%, Ni: 0.2 to 3.0%, and Al: 0.005 to 0.1%, further containing Ti: 4×(C %+N %) to 0.35%, and having a balance of Fe and unavoidable impurities, and having contents of the elements satisfying the following formula (A) and formula (B):