High-temperature stainless steel and method for its production
US5824264A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 25, 1996 |
| Grant date | Oct 20, 1998 |
| Priority date | — |
| Expiry date | Jul 25, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C38/54
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A high-temperature austenitic stainless steel having improved weldability is disclosed. The steel consists essentially, by weight, of: PA0 C: 0.05%-0.15%, Si: less than 1.0%, Mn: 2.0% or less, PA0 P: 0.04% or less, S: 0.01% or less, Cr: 20%-30%, PA0 Ni: 10%-15%, N: 0.10%-0.30%, PA0 B: 0.0010%-0.01%, PA0 one or two of La and Ce: 0.01%-0.10% in total, PA0 Al: 0.01%-0.20%, and a balance of Fe and incidental impurities, wherein the contents of N and Al satisfy the following inequality: EQU % N+2.times.% Al.ltoreq.0.500% and the value for Ni balance (Ni bal.) of the steel calculated by the following formula is in the range of from -1.0% to +3.0%: EQU Ni bal. (%)=% Ni+0.5.times.% Mn+30.times.(% C+% N)-1.1.times.(% Cr+1.5.times.% Si)+8.2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.