Aluminum is a light metal with a low density (2.79/cm3) and good strength and plasticity. Aluminum alloy has good strength, the strength of super-hard aluminum alloy can reach 600Mpa, and the tensile strength of ordinary hard aluminum alloy is also 200-450Mpa, which is much higher than steel, so it is widely used in mechanical manufacturing. Aluminum is second only to silver and copper and is used in the manufacture of various conductors. Aluminum has good thermal conductivity and can be used as a heat sink material. Aluminum also has good corrosion resistance and good plasticity, and is suitable for various pressure processing.
Aluminum alloys are divided into two categories:one is cast aluminum alloy,and there are aluminum silicon,aluminum copper,aluminum magnesium, aluminum zinc alloy.The second is deformed aluminum alloy,which is divided into two categories:heat-treated and not strengthened aluminum alloy,aluminum-manganese-based, aluminum-magnesium-based alloy;heat-treated and strengthened aluminum alloy, aluminum-magnesium-silicon-based,aluminum-copper-magnesium-based, aluminum-copper-magnesium zinc and so on.
