Zinc is the primary alloying element in the 7xxx collection, normally coupled with tiny amounts of other elements. They are really characterised by: Some wrought alloys, just like the 5xxx series with magnesium, offer excellent corrosion resistance, though sure Forged alloys may be extra liable to corrosion in severe environments. https://aluminium-alloys88654.look4blog.com/71010477/what-does-aluminium-alloys-mean