Guidence of sheet metal aluminum fabrication

Types and differences of aluminum
Aluminum is a very common metal material in daily life use. According to different classification standards, it can be divided into different types, and there are some obvious differences between these types of aluminum.

1. Classification by purity
   •Pure aluminum: Pure aluminum is divided into three categories according to its purity: high-purity aluminum, industrial high-purity aluminum and industrial pure aluminum. Welding is mainly industrial pure aluminum. The purity of industrial pure aluminum is 99.7% to 98.8%, and its grades are L1, L2, L3, L4, L5, L6 and other six types. Pure aluminum has excellent electrical conductivity, thermal conductivity, corrosion resistance and machinability, but low strength.
2. Classification by alloy elements
   •Aluminum alloy: Aluminum alloy is obtained by adding alloy elements to pure aluminum. According to the processing characteristics of aluminum alloys, they can be divided into two categories: deformation aluminum alloy and casting aluminum alloy. Deformed aluminum alloy has good plasticity and is suitable for pressure processing. Deformed aluminum alloy can be divided into four types according to its performance characteristics and uses: rust-proof aluminum deformation aluminum alloy (LF), hard aluminum (LY), super hard aluminum (LC) and forged aluminum (LD). Cast aluminum alloys are divided into four types according to the addition of main alloying elements: aluminum silicon series (AL-SI), aluminum copper series (AL-CU), aluminum magnesium series (AL MG) and aluminum zinc series (AL-ZN).
3. Classification by use

• Industrial aluminum profiles: General industrial aluminum profiles refer to: mainly used for industrial production and manufacturing, such as automated machinery and equipment, enclosure frames, and customized molds by companies according to their own mechanical equipment requirements, such as assembly line conveyor belts, elevators, dispensing machines, testing equipment, shelves, etc., electronic machinery industry and clean rooms, etc.
• Building aluminum profiles: Building aluminum profiles mainly include door and window aluminum profiles and curtain wall aluminum profiles;
• Radiator aluminum profiles: mainly used for heat dissipation of various power electronic equipment, heat dissipation of LED lighting fixtures, and heat dissipation of computer digital products, etc.
• Automotive parts aluminum profiles: mainly used for automotive parts, connectors, etc.
• Furniture aluminum profiles: mainly used for furniture decorative frames, table and chair supports, etc.
• Solar photovoltaic profiles: including: solar aluminum profile frames, solar photovoltaic brackets, solar photovoltaic tile fasteners, etc.
  •Aluminum alloy profiles for rail vehicle structures: Mainly used for rail vehicle body manufacturing. Aluminum alloy profiles have the characteristics of light weight, good formability, high strength, corrosion resistance, and recyclability. In recent years, aluminum and aluminum alloys have been increasingly used in the field of rail vehicles.

1. Classification by processing technology
   Casting aluminum alloy: alloying elements
   Heat-treatable alloy: mechanical properties can be improved by heat treatment such as quenching

• Non-heat-treatable alloy: mechanical properties cannot be improved by heat treatment, and can only be strengthened by cold working deformation

1. Classification by chemical composition
   1XXX series: aluminum content is more than 99.00%
   2XXX series: aluminum alloy with copper as the main alloying element
   3XXX series: aluminum alloy with manganese as the main alloying element
   4XXX series: silicon-based
   5XXX series: magnesium-based
   6XXX series: magnesium and silicon-based
   7XXX series: zinc-based
   Aviation aluminum
   8XXX series: mostly used for aluminum foil
   9XXX series: a spare alloy
2. In summary, the types and differences of aluminum are mainly reflected in its purity, alloying elements, uses, processing technology and chemical composition. According to specific usage needs and technical requirements, you can choose the appropriate type of aluminum.