Low-nickel austenitic stainless steel
US9039961B2 · kind B2 · utility
0Cited by
0References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 18, 2011 |
| Grant date | May 26, 2015 |
| Priority date | — |
| Expiry date | Feb 16, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C38/42
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention relates to a low-nickel austenitic stainless steel with high resistance to delayed cracking and the use of the steel. The steel contains in weight % 0.02-0.15% carbon, 7-15% manganese, 14-19% chromium, 0.1-4% nickel, 0.1-3% copper, 0.05-0.3% nitrogen, the balance of the steel being iron and inevitable impurities, and the chemical composition range in terms of the sum of carbon and nitrogen contents (C+N) and the measured Md3o-temperature is inside the area defined by the points ABCD which have the following values Point Md30° C. C+N % A−80 0.1 B+7 0.1 C−40 0.40 D−80 0.40.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.