Q:

Silicon aluminum alloy is an important industrial alloy widely used in various fields, including but not limited to aviation, aerospace, automotive manufacturing, electronic equipment, construction, and sports goods. The silicon content of this alloy varies, and its applications also vary:

When the silicon content is low. Silicon aluminum alloy has good ductility and is often used as a deformation alloy

When the silicon content is high. Its melt has good filling properties and is commonly used in casting alloys. Especially when the silicon content exceeds the Al Si eutectic point (silicon content is 12.6%), the particle content of silicon aluminum alloy can reach 14.5% to 25%, further improving its mechanical properties.

In addition, silicon aluminum alloy also has good corrosion resistance, low coefficient of expansion, and high corrosion resistance, so it is widely used in the manufacturing of chemical equipment, chemical reactors, heat exchangers, and other equipment. The density and thermal expansion coefficient of this material significantly decrease with the increase of silicon content, making it have great potential in the electronic packaging material market. In addition, due to its low melting point and good fluidity, silicon aluminum alloy is prone to melting during the casting process and can quickly fill the model, improving casting efficiency. These characteristics make silicon aluminum alloy an ideal material for manufacturing complex shaped castings such as cover plates, motor shells, brackets, etc., and also used as brazing solder.

Overall, silicon aluminum alloys play an indispensable role in multiple industries due to their excellent physical and mechanical properties.