Aluminum alloy forging is mainly used for forging aluminum alloy. Die-casting aluminum alloys belong to casting aluminum alloys, but die-casting aluminum alloys are mainly used.

　　Aluminum alloy forging includes A1-Si-Mg-Cu alloy and A1-Cu-Ni-Fe alloy. Commonly used wrought aluminum alloys include LD2.LD5.LDL0 and so on. They contain a variety of alloying elements, but in smaller amounts. They have good thermoplasticity and therefore good forging properties and good mechanical properties. This alloy is mainly used to carry die forgings and some complex shape forgings.

　　Cast aluminum alloys are divided into four categories: A1-Si system, A1-Cu system, Al-Mg system and Al-Zn system. For casting aluminum alloy, in addition to the necessary mechanical properties and corrosion resistance, it should also have good casting properties. Among casting aluminum alloys, A1-Si alloy, also known as silicon aluminum Ming, has good casting properties and mechanical properties.