Alloys are divided into two categories: cast aluminum alloy, which is used in as cast state; Deformed aluminum alloy can withstand pressure processing, and its mechanical properties are higher than those of as cast. It can be processed into aluminum alloy materials of various shapes and specifications. It is mainly used for manufacturing aviation equipment, daily necessities, building doors and windows, etc.
Aluminum alloy can be divided into deformed aluminum alloy and cast aluminum alloy according to processing method. Wrought aluminum alloys are divided into non heat treatable strengthened aluminum alloys and heat treatable strengthened aluminum alloys. Non heat treatable reinforced type can not improve mechanical properties through heat treatment, but can only be strengthened through cold working deformation. It mainly includes high-purity aluminum, industrial high-purity aluminum, industrial pure aluminum and antirust aluminum. Heat treatable strengthened aluminum alloy can improve its mechanical properties by heat treatment means such as quenching and aging. It can be divided into hard aluminum, forged aluminum, superhard aluminum and special aluminum alloy.
Aluminum alloy has low density but high specific strength. It is close to or higher than high-quality steel and has good plasticity. It can be processed into various profiles. It has excellent conductivity, thermal conductivity and corrosion resistance. It is widely used in industry, and its usage is only second to that of steel. Aluminum alloy pressure processing products are divided into seven categories: rust prevention (LF), hard (ly), forging (LD), super hard (LC), coating (LB), special (LT) and brazing (LQ). The commonly used aluminum alloy materials have three states: annealing (M simmering), hardening (y) and hot rolling (R).