Low carbon plus nitrogen, free-machining austenitic stainless steel
US4613367A · kind A · utility
7Cited by
4References
9Claims
0Family size
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Key dates
| Filing date | Jun 14, 1985 |
| Grant date | Sep 23, 1986 |
| Priority date | — |
| Expiry date | Jun 14, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C38/60
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A chromium-nickel austenitic stainless steel having improved machinability resulting from low carbon and nitrogen contents, along with a high manganese to sulfur ratio. The composition of the steel consists essentially of, in weight percent, carbon plus nitrogen up to 0.060, preferably up to 0.049, and most preferred up to 0.032, chromium 16 to 30, preferred 17 to 19, nickel 5 to 26, preferred 6 to 14, sulfur 0.25 to 0.45, manganese over 2 to about 7 and at least about eight times the sulfur content, balance iron and incidental impurities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.