Stainless steel seamless pipe and method for manufacturing same
US12291766B2 · kind B2 · utility
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Key dates
| Filing date | Aug 27, 2020 |
| Grant date | May 6, 2025 |
| Priority date | — |
| Expiry date | Dec 19, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D2211/008
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A stainless steel seamless pipe having high strength and excellent corrosion resistance, and a method for producing the same. The stainless steel seamless pipe has a specified composition and satisfies a predetermined formula. The stainless steel seamless pipe has a microstructure containing at least 30% martensitic phase, at most 60% ferrite phase, and at most 40% retained austenite phase by volume, the stainless steel seamless pipe having a yield strength of 758 MPa or more.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.