A novel extrudable aluminum based alloy is described consisting essentially of 0.60-0.84% magnesium, 0.45-0.58% silicon, 0.15-0.40% copper, 0.04-0.35% chromium, or 0.20-0.80% manganese, less than 0.25% iron, where Si>=(Mg/1.73+(Mn+Cr+Fe)/3-0.04), and the balance essentially aluminum. In the alloy of the present invention, the magnesium content has been reduced to the minimum possible for mechanical properties. In this way, the magnesium silicide content of the alloy has been reduced, providing a very beneficial effect on extrudability.

Uma liga baseada de alumínio extrudable da novela é consistir descrito essencialmente em 0.60-0.84% magnésio, 0.45-0.58% silicone, 0.15-0.40% cobre, 0.04-0.35% cromo, ou 0.20-0.80% manganês, mais menos de 0.25% ferro, onde silicone = (Mg/1.73+(Mn+Cr+Fe)/3-0.04), e do contrapeso o alumínio essencialmente. Na liga da invenção atual, o índice do magnésio foi reduzido ao mínimo possível para propriedades mecânicas. Nesta maneira, o índice do silicide do magnésio da liga foi reduzido, fornecendo um efeito muito benéfico no extrudability.

 
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