The Material Properties of Aluminum Alloy

Aluminum alloys have low density but high strength, close to or exceeding high quality steel. Good plasticity, can be processed into various profiles, with excellent electrical conductivity, thermal conductivity and corrosion resistance. Widely used in industry, the amount used is second only to steel. Some aluminum alloys can be heat treated to achieve good mechanical properties, physical properties and corrosion resistance. The hard aluminum alloy belongs to the AI-Cu-Mg system and generally contains a small amount of Mn, which can be heat-treated and strengthened. It is characterized by high hardness but poor plasticity. Superhard aluminum is a Cu-Mg-Zn system which can be heat-treated and is the highest strength aluminum alloy at room temperature. However, the corrosion resistance is poor and the high temperature softens quickly. The forged aluminum alloy is mainly an Al-Zn-Mg-Si alloy. Although the amount of added elements is large, the content is small. Therefore, the forged aluminum alloy has excellent thermoplasticity and is suitable for forging, so it is also called forged aluminum alloy.