Welding material
US6290905A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 16, 2000 |
| Grant date | Sep 18, 2001 |
| Priority date | — |
| Expiry date | Feb 16, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D2211/008
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A welding method for two members adapted to be welded and formed of a low-alloy steel for structural purposes causing the weld metal to develop martensite transformation during cooling after welding, so that the weld metal becomes expanded to a greater degree at room temperature than at a temperature at which the martensite transformation initiates. The welding material comprises a ferrous alloy containing C, Cr, Ni, Si, Mn, Mo and Nb, all of which meet substantially with the contents of the following equation (1): EQU 170.ltoreq.719-(795.times.C wt %)-(23.7.times.Cr wt %)-(26.5.times.Ni wt %)-(35.55.times.Si wt %)-(13.25.times.Mn wt %)-(23.7.times.Mo wt %)-(11.85.times.Nb wt %)<250 (1).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.