Ferritic stainless steel sheet for plasma arc welding and welding method therefor
US10272513B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 12, 2015 |
| Grant date | Apr 30, 2019 |
| Priority date | — |
| Expiry date | May 12, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C38/54
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The ferritic stainless steel sheet contains, in mass%, C: 0.020% or less, Si: 0.6% or less, Mn: 0.5% or less, P: 0.04% or less, S: 0.010% or less, Al: 0.015% or more and 0.20% or less, Cr: 17.0% or more and 24.0% or less, Ni: less than 0.6%, N: 0.020% or less, Ca: 0.0002% or more and 0.0020% or less, and O: 0.0050% or less and further contains one or two selected from Ti: 0.01% or more and 0.45% or less and Nb: 0.01% or more and 0.55% or less, with the balance being Fe and unavoidable impurities. The ferritic stainless steel sheet satisfies (Ti+Nb×48/93)/(C+N)≥8.0 (where Ti, Nb, C, and N represent the contents (% by mass) of these elements, respectively).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.