(A) the performance of aluminum: its industrial aluminum processing performance, good conductivity, mainly for the production of conductive bus wires and heat exchanger 2, anti-rust aluminum is rust-proof aluminum alloy heat treatment can not be strengthened only by cold working to strengthened. Commonly used LF2 (5052), LF4 (5083) and LF21 (3003), with moderate corrosion resistance and good plasticity 3, grades are typically forged aluminum LD2-2 (6070), LD10 (2014), LD30 (6061 ), LD31 (6063) LD2-2 with good ductility, cold and hot are easy to shape. Widely used in the manufacture of moderate-intensity work at room temperature forging, extrusion profiles and tubes. LD10, also known as high-strength aluminum hard, with considerable strength of LY12 alloy, forging better performance than LY12, good plasticity, have good heat resistance and weldability, but the material's performance gap between the vertical and horizontal. Can be processed into tubes, rods, type, line, and forgings, primarily for high-load structures. LD30 and LD31 with moderate strength, good ductility and excellent weldability, corrosion resistance, no tendency to stress corrosion cracking, can be anodized. Suitable for a variety of architectural shapes and the need for good corrosion resistance requirements of the structural parts, industrial materials .4, hard-hard aluminum high strength aluminum, typical grades for LY12 (2024). The brands of hot extrusion heat treatment, its tensile strength up to 392MPa at room temperature for more than a certain degree of heat resistance, can be used as the work of 150 ° C the following components. 5, the typical grade aluminum with super-hard LC4, also known as ultra-high-strength hard aluminum extrusions room temperature tensile strength of not less than 539MPa. Mainly for the aerospace industry, the main force aircraft structure components. 
 (B) the widely used aluminum alloys: aluminum and aluminum alloy is the most widely used non-ferrous metals, second only to its production of steel. Aluminum due to low intensity, generally not used as structural materials. Than it is as high strength aluminum alloy, with It is to replace some of the steel material, can reduce the mechanical quality of the product, therefore, aluminum in the chemical / mechanical / electrical / instrumentation / light industry / aviation / aerospace and other sectors has been widely used. aluminum casting is divided into two major deformation and class. deformation of aluminum alloy can be processed into bars / board / tape / wire / profile / tubing / foil material and forgings use cast aluminum due to the process of good density, good corrosion resistance to the casting in the aviation / instrumentation and general machinery to get a wide range of applications.