Method for manufacturing a stainless steel product and a stainless steel product manufactured by the method
US7875128B2 · kind B2 · utility
7Cited by
2References
5Claims
0Family size
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Key dates
| Filing date | Apr 20, 2007 |
| Grant date | Jan 25, 2011 |
| Priority date | — |
| Expiry date | May 31, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D2211/001
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A Ni-free stainless steel product excellent in workability and corrosion resistance and a method for manufacturing such stainless steel product. A ferritic stainless steel product containing 18 to 24% by mass of Cr and 0 to 4% by mass of Mo is brought into contact with an inert gas containing a nitrogen gas at 800 degrees C. or above to subject it to nitrogen absorption treatment so that the product is austenitized partially or wholly to obtain such nickel-free product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.