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Aluminum is a chemical element. Its chemical symbol is Al, and its atomic number is 13. The content of aluminum in the crust is second only to oxygen and silicon, ranking third, and is the most abundant metal element in the crust. Among metal varieties, it is second only to steel and is the second largest category of metals. It was not until the end of the 19th century that aluminum emerged as a competitive metal in engineering applications and became popular for a while. The development of the three important industries of aviation, construction, and automobiles requires the characteristics of materials to have the unique properties of aluminum and its alloys, which greatly facilitates the production and application of this new metal aluminum. The application of aluminum is extremely wide.
Pure aluminum is very soft, not strong, and has good ductility. It can be drawn into filaments and rolled into foils. It is widely used in the manufacture of wires, cables, radio and packaging industries. Its electrical conductivity is about two-thirds of copper, but because its density is only one-third of copper, compared with copper wires of the same mass and length, aluminum’s electrical conductivity is about copper Twice as much as copper, and the price is lower than copper.
Aluminum alloy is the general term for aluminum-based alloys. The main alloying elements are copper, silicon, magnesium, zinc, and manganese, and the secondary alloying elements are nickel, iron, titanium, chromium, and lithium.
Aluminum alloy has a low density, but its strength is relatively high, which is close to or exceeds that of high-quality steel. It has good plasticity and can be processed into various profiles. It has excellent electrical conductivity, thermal conductivity and corrosion resistance. It is widely used in industry and its usage is second only to steel.
Classification of aluminum products: Rolled steel, cast steel, rolled steel, non-heat-treated alloy, pure aluminum alloy (1000 series), aluminum-manganese alloy (3000 series), aluminum-silicon alloy (4000 series), aluminum-magnesium alloy (5000 series), heat-treated alloy aluminum and copper Magnesium alloy (2000 series) Aluminum-magnesium-silicon alloy (6000 series) Aluminum-zinc-magnesium alloy (7000 series) Casting material Non-heat-treated alloy Pure aluminum alloy Aluminum-silicon alloy (ADC1) Aluminum-magnesium alloy (ADC5, ADC6) Heat-treated alloy aluminum-copper Silicon alloy (ADC10, ADC12) Aluminum copper magnesium silicon alloy (ADC14) Aluminum magnesium silicon alloy (ADC3) Aluminum processed product classification: Rolled products: Sheet (Sheet), plate (Plate), coil (Coil), strip Strip Extrusion products: pipes, solid bars, profiles. Casting products: castings.
