Aluminum alloy extruded material for automotive structural members
US6716390B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 15, 2000 |
| Grant date | Apr 6, 2004 |
| Priority date | — |
| Expiry date | Dec 15, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C21/04
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An aluminum alloy extruded material for automotive structural members, which contains 2.6 to 5 wt % of Si, 0.15 to 0.3 wt % of Mg, 0.3 to 2 wt % of Cu, 0.05 to 1 wt % of Mn, 0.2 to 1.5 wt % of Fe, 0.2 to 2.5 wt % of Zn, 0.005 to 0.1 wt % of Cr, and 0.005 to 0.05 wt % of Ti, and satisfies relationship of the following expression (I), (Content of Mn (wt %))+0.32×(content of Fe (wt %))+0.097×(content of Si (wt %))+3.5×(content of Cr (wt %))+2.9×(content of Ti (wt %))≦1.36 (I) with the balance being made of aluminum and unavoidable impurities. A method of producing the aluminum alloy extruded material for automotive structural members, which comprises cooling with a refrigerant from outside of a die-exit side, at the time of extrusion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.