Weld metal with excellent resistance to hydrogen embrittlement sensitivity

摘要

PROBLEM TO BE SOLVED: To provide a welded metal that is superior in hydrogen embrittlement resistance sensitivity even when it has a high strength of a tensile strength being over 780 MPa.;SOLUTION: A welded metal has a predetermined chemical composition, in which retained austenite particles are present in the number of 2500/mm² or more, a volume fraction of the retained austenite particles is 4.3% or more, and the ratio of content between Cr and Mn in the welded metal, [Cr]/[Mn], is 0.20 or more.;COPYRIGHT: (C)2014,JPO&INPIT