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Paris, France

Constellium is a global producer of aluminium semi-products with headquarters in Amsterdam, The Netherlands. It was created when Rio Tinto sold off Alcan Engineered Products to Apollo Management and FSI in 2011. Alcan Engineered Products was the result of various mergers and acquisitions between Pechiney, Alcan and Alusuisse. Constellium is listed on the New York Stock Exchange and NYSE Euronext Paris since May 2013.It has a board of ten directors and maintain a one-tier board of directors consisting of both executive directors and non-executive directors . Under Dutch law, the board of directors is responsible for the policy and day-to-day management. The non-executive directors supervise and provide guidance to the executive directors.Constellium manufactures aluminium rolled products and extruded products based on a large variety of advanced alloys. It has customers in different industries, including mainly aerospace, automotive and packaging sectors.Constellium reported €3.495 billion in revenues in 2013. Wikipedia.

The present invention relates to aluminum-lithium alloys in general and, in particular, such products as used in the aircraft industry and the welding of these.

The invention relates to a method for manufacturing a thin sheet having a thickness of 0.5 to 3.3 mm and an essentially non-recrystallized structure made of aluminum-based alloy.

The invention concerns a sheet 0.5 to 8 mm thick made from aluminium alloy. The sheet can be obtained by a method comprising casting, homogenising, hot rolling and optionally cold rolling, solution heat treatment, quenching and tempering, the composition and the tempering being combined in such a way that the elasticity limit in the longitudinal direction R

An aluminum alloy comprising 2.1 to 2.8 wt. % Cu, 1.1 to 1.7 wt. % Li, 0.1 to 0.8 wt. % Ag, 0.2 to 0.6 wt. % Mg, 0.2 to 0.6 wt. % Mn, a content of Fe and Si less or equal to 0.1 wt. % each, and a content of unavoidable impurities less than or equal to 0.05 wt. % each and 0.15 wt. % total, and the alloy being substantially zirconium free.

Constellium | Date: 2013-01-03

The present invention relates to extruded, rolled and/or forged products. Also provided are methods of making such products based on aluminum alloy wherein a liquid metal bath is prepared comprising 2.0 to 3.5% by weight of Cu, 1.4 to 1.8% by weight of Li, 0.1 to 0.5% by weight of Ag, 0.1 to 1.0% by weight of Mg, 0.05 to 0.18% by weight of Zr, 0.2 to 0.6% by weight of Mn and at least one element selected from Cr, Sc, Hf and Ti, the quantity of said element selected, being 0.05 to 0.3% by weight for Cr and for Sc, 0.05 to 0.5% by weight for Hf and 0.01 to 0.15% by weight for Ti, the remainder being aluminum and inevitable impurities. The products and methods of the present invention offer an advantageous compromise between static mechanical strength and damage tolerance and are useful in aeronautical design.

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