High strength aluminum alloy extruded material with excellent corrosion resistance and favorable quenching properties and manufacturing method therefor
US11136658B2 · kind B2 · utility
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Key dates
| Filing date | Sep 26, 2018 |
| Grant date | Oct 5, 2021 |
| Priority date | — |
| Expiry date | Sep 26, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22F1/002
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An aluminum alloy extruded material that exhibits high strength by air cooling immediately after extrusion processing and excellent stress corrosion cracking resistance, and a method for manufacturing the same are disclosed. The material includes, by mass: 6.0 to 8.0% of Zn, 1.50 to 2.70% of Mg, 0.20 to 1.50% of Cu, 0.005 to 0.05% of Ti, 0.10 to 0.25% of Zr, 0.3% or less of Mn, 0.05% or less of Cr, 0.25% or less of Sr, and 0.10 to 0.50% in total among Zr, Mn, Cr and Sr, with the balance being Al and unavoidable impurities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.