Aluminium sheet grades are divided into pure aluminium grades and aluminium alloy grades. The former contain at least 99% aluminium, some reach 99.9%, while the latter incorporates alloying metals, mainly including copper, silicon, magnesium, zinc, manganese and sometimes including nickel, iron, titanium, chromium, lithium, etc. These metals are added to improve mechanical and chemical properties of aluminium sheet plates and …

7005 aluminium alloy, an Al-Zn-Mg-Cu series super hard aluminum, has a general hardness around hrb150. The main alloy of 7000 series is zinc, with the composition ratio of 6%. 6061 alloy, on the other hand, belongs to the Al-Cu-Mg-Mn series. It’s a kind of forged aluminum with the hardness of hrb100.6000 series is mainly composed of magnesium and silicon, with …