Aluminum alloy sheet and method for manufacturing the same
US8425698B2 · kind B2 · utility
2Cited by
2References
2Claims
0Family size
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Key dates
| Filing date | Jul 30, 2004 |
| Grant date | Apr 23, 2013 |
| Priority date | — |
| Expiry date | Aug 31, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22F1/047
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An aluminum alloy sheet having excellent press formability and stress corrosion cracking resistance, comprises 3.3 to 3.6 percent by weight of Mg and 0.1 to 0.2 percent by weight of Mn, furthermore, 0.05 to 0.3 percent by weight of Fe and 0.05 to 0.15 percent by weight of Si, and the remainder comprises Al and incidental impurities, wherein the sizes of intermetallic compounds is 5 μm or less, the recrystallized grain size is 15 μm or less in the region at a depth of 10 to 30 μm below the sheet surface, and the surface roughness is Ra 0.2 to 0.7 μm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.