Ferritic stainless steel sheet superior in heat resistance
US8062584B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 26, 2007 |
| Grant date | Nov 22, 2011 |
| Priority date | — |
| Expiry date | Dec 26, 2027 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01N13/16
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention provides, as a material superior in heat resistance in a hot environment where the maximum temperature of the exhaust gas becomes 750 to 900° C., ferritic stainless steel sheet superior in heat resistance in a broad temperature region of 750 to 900° C. with long term stability by a smaller amount of addition of Mo than SUS444 containing about 2% of expensive Mo, that is, ferritic stainless steel sheet superior in heat resistance characterized by containing, by mass %, C: 0.01% or less, N: 0.02% or less, Si: 0.05 to 1%, Mn: 0.1 to 2%, Cr: 10 to 30%, Mo: 0.1 to 1%, Cu: 1 to 2%, Nb: 0.2 to 0.7%, Ti: 0.01 to 0.3%, and B: 0.0002 to 0.0050%, having a balance of Fe and unavoidable impurities, and having a 0.2% yield strength at 750° C. of 70 MPa or more.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.