Constellium Valais Sa

Alcan Technology & Management Ltd.

Constellium Issoire

Constellium Rolled Products Ravenswood, LLC

Christophe Jaquerod

Petar Ratchev

Michael Niedzinski

Gunther Hollrigl

Nicolas Calabretto

Louis Boogh

Carlos Saez Comet

The present invention relates to plates with a thickness of between 8 and 50 mm and made from aluminum alloy with a composition, as % by weight, Si: 0.7-1.3; Mg: 0.6-1.2; Mn: 0.65-1.0; Fe: 0.05-0.35; at least one element selected from Cr: 0.1-0.3 and Zr: 0.06-0.15; Ti<0.15; Cu<0.4; Zn<0.1; other elements <0.05 each and <0.15 in total, the remainder aluminum, and the method for manufacturing same. The plates according to the invention are particularly useful as precision plates, in particular for producing elements of machines, for example assembly or inspection equipment. The plates according to the invention have improved dimensional stability in particular during the machining steps, while having sufficient static mechanical properties, and excellent suitability for anodizing.

Aluminum alloy precision plates

An armor component produced from a 7xxx series aluminum alloy, wherein the aluminum alloy consists essentially of:

7xxx alloy defence applications with a balanced armor piercing fragmentation performance

An aluminium alloy having high mechanical strength and low quench sensitivity comprising 4.6 to 5.2 wt. % Zn, 2.6 to 3.0 wt. % Mg, 0.1 to 0.2 wt. % Cu, 0.05 to 0.2 wt. % Zr, max. 0.05 wt. % Mn, max. 0.05 wt. % Cr, max. 0.15 wt. % Fe, max. 0.15 wt. % Si, max. 0.10 wt. % Ti and aluminium as the remainder along with production related impurities, individually max. 0.05 wt. %, in total max. 0.15 wt. %. A process for producing plates having a thickness of more than 300 mm for manufacturing moulds for injection-moulding plastics is made up of the following steps: continuous casting the alloy into ingots having a thickness greater than 300 mm, heating the ingots to a temperature of 470 to 490&#xb0; C. with a max. heating rate of 20&#xb0; C./h between 170 and 410&#xb0; C., homogenising the ingots for 10 to 14 h at a temperature of 470 to 490&#xb0; C., cooling the ingots in still air to an intermediate temperature of 400-410&#xb0; C., cooling the ingots by means of forced air cooling from the intermediate temperature of 400-410&#xb0; C. to a temperature of less than 100&#xb0; C., cooling the ingots to room temperature, artificially age-hardening the ingots at elevated temperature. The artificially age-hardened ingots can be employed for manufacturing moulds for injection-moulding plastics.

Aluminum alloy with increased resistance and low quench sensitivity

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Noes, Switzerland

Christophe Jaquerod