Free-machining wrought aluminium alloy product and process...

C - Chemistry – Metallurgy – 22 – C

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C22C 21/02 (2006.01) C22C 21/08 (2006.01)

Patent

CA 2563561

The present relates to a free-machining wrought AlMgSi-alloy product, preferably in extruded form, for machining or free-cutting applications and wherein it contains, in weight %: Si 0.6-2.0, Fe 0.2-1.0, Mg 0.5-2.0, Cu max 1.0, Mn max 1.5, Zn max 1.0, Cr max 0.35, Ti max 0.35, Zr 0.04-0.3, impurities max 0.05 each, total max 0.15, Al balance, and further to a process for producing such a free-machining alloy product.

La présente invention concerne un alliage d'AlMgSi corroyé de décolletage, de préférence sous forme extrudée, destiné à des applications d'usinage ou de décolletage, contenant 0,6-2,0 % en masse de Si, 0,2-1,0 % en masse de Fe, 0,5-2,0 % en masse de Mg, un maximum de 1,0 % en masse de Cu, un maximum de 1,5 % en masse de Mn, un maximum de 1,0 % en masse de Zn, un maximum de 0,35 % en masse de Cr, un maximum de 0,35 % en masse de Ti, 0,04-0,3 % en masse de Zr, 0,05 % en masse d'impuretés chacun, 0,15 % en masse au total, le reste étant constitué d'Al. L'invention concerne également un procédé destiné à la production de cet alliage de décolletage.

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