6XXX aluminum alloy for extrusion with excellent crash performance and high yield strength and method of production thereof

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United States of America Patent

PATENT NO 12077840
APP PUB NO 20210238721A1
SERIAL NO

17049715

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Abstract

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The invention relates to an extruded product made of 6xxx aluminium alloy comprising 0.40-0.80 wt. % Si, 0.40-0.80 wt. % Mg, 0.40-0.70 wt. % Cu, up to 0.4 wt. % Fe, up to 0.30 wt. % Mn, up to 0.2 wt. % Cr, up to 0.2 wt. % V, up to 0.14 wt. % Zr, up to 0.1 wt. % Ti, up to 0.05 wt. % each impurity and total 0.15 wt. %, remainder aluminum, wherein the ratio Mg/Sifree is between 0.8 and 1.2 where Sifree is calculated according to the equation Sifree=Si−0.3*(Mn+Fe) where Si, Mn and Fe correspond to the content in weight % of Si, Mn and Fe of said 6xxx aluminum alloy and to the corresponding extruded product particularly suitable with a tensile yield strength higher than 280 MPa, and excellent crash properties. The invention also relates to the manufacturing process to obtain such extruded product.

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Patent Owner(s)

Patent OwnerAddress
CONSTELLIUM SINGEN GMBH78224 SINGEN

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ben, Tahar Mehdi Grenoble, FR 4 0
Camean, Queijo Paula London, GB 1 0
Jarrett, Martin Oxfordshire, GB 12 21
Skubich, Alexis Lyons, FR 8 21

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