Patent ID: 7325717
Filing Date: 2008-02-05
Classification: B23K,C22C,Y10T

Abstract:
1. A method of welding with an iron-based alloy welding material comprising welding a low-alloy steel material having a tensile strength of 490 to 1180 MPa with the iron-based alloy welding material, the welding material having a composition comprising, by mass %: less than 0.05% of C; from 6.0 to 16.0% of Cr; and from 6.0 to 16.0% of Ni, wherein, the martensitic transformation starting temperature (Ms point) is at least 0° C. and less than 170° C., and wherein the composition of the welding material is adjusted so that the contents of C, Si, Mn, Cr, Ni, Mo, and Nb satisfy the following formula (1): wherein C, Si, Mn, Cr, Ni, Mo, and Nb represent the contents of the respective elements (mass %).