Aluminum alloy and extrusion
US8252128B2 · kind B2 · utility
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2References
16Claims
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Key dates
| Filing date | Mar 14, 2008 |
| Grant date | Aug 28, 2012 |
| Priority date | — |
| Expiry date | Feb 9, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C21/08
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A population of extrusion billets has a specification such that every billet is of an alloy of composition (in wt. %): Fe<0.35; Si 0.20-0.6; Mn<0.10; Mg 0.25-0.9; Cu<0.015; Ti<0.10; Cr<0.10; Zn<0.03; balance Al of commercial purity. After ageing to T5 or T6 temper, extruded sections can be etched and anodised to give extruded matt anodised sections having improved properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.