Austenite type rustless steel welded joint and austenite type rustless steel

摘要

Basic material and weld metal, mass % with, C: 0.3% or less, Si: 2% or less, Mn: 0.01 - 3.0%, P: Exceeding 0.04%, 0.3% or less, S: 0.03% or less, Cr: 12 - 30%, Ni: 6 - 55%, rare earth element: Exceeding 0.2%, 0.6% or less, sol. Al: 0.001 - 3% and N: 0.3% or less is contained, the remainder consists of Fe and the impurity, at the same time (Cr+1.5 Si+2 P)/(Ni+0.31 Mn+22 C+14.2 N+5 P) as for the austenite type stainless steel welded joint to which 1.388 satisfies formula, P content is high, the complete austenite solidifies even although, is superior in resistance welding solidification crack characteristic. Because of this, it is possible to apply to the use where welding operation is required widely. Furthermore, the element sign in the above-mentioned formula mass of that element % with displays content.