AUSTENITIC STAINLESS STEEL WELDED JOINT AND AUSTENITIC STAINLESS STEEL WELDING MATERIAL

摘要

An austenitic stainless steel welded joint, whose base metal andweld metal each comprises, by mass percent, C: not more than 0.3%, Si: notmore than 2%, Mn: 0.01 to 3.0%, P: more than 0.04% to not more than 0.3%,S: not more than 0.03%, Cr: 12 to 30%, Ni: 6 to 55%, rare earth metal(s):more than 0.2% to not more than 0.6%, sol. Al: 0.001 to 3% and N: not morethan 0.3%, with the balance being Fe and impurities, and satisfies theformula of (Cr + 1.5 × Si + 2 × P)/(Ni + 0.31 × Mn + 22× C + 14.2 × N + 5 ×P) 1.388, in spite of having a high P content and showing the fullyaustenitic solidification, has excellent resistance to the weld solidificationcracking. Therefore, the said austenitic stainless steel welded joint can bewidely used in such fields where a welding fabrication is required. Eachelement symbol in the above formula represents the content by masspercent of the element concerned.