An alloy based on aluminum with a certain amount of other alloying elements added is one of the light metal materials. In addition to the general characteristics of aluminum, aluminum alloys also have specific characteristics of some alloys due to the different types and quantities of alloying elements added. The density of aluminum alloy is 2.63-2.85g/cm3, it has high strength (σb is 110-650MPa), its specific strength is close to that of high-alloy steel, its specific stiffness exceeds that of steel, it has good casting performance and plastic processing performance, and good electrical conductivity , thermal conductivity, good corrosion resistance and weldability, can be used as structural materials, and has a wide range of applications in aerospace, aviation, transportation, construction, electromechanical, light and daily necessities
Aluminum alloy has the characteristics of low density, good mechanical properties, good processing performance, non-toxic, easy to recycle, good electrical conductivity, heat transfer and corrosion resistance, etc. It is widely used in marine industry, chemical industry, aerospace, metal packaging, transportation, etc. widely used in the field.
Aerospace
Aluminum alloy is the main material used in the manufacture of aircraft. Compared with mild steel used in automobiles, aluminum alloy is more expensive and less dense, with a relative density of 2.8. Compared with mild steel with a relative density of 7.8, it is about one-third lighter. Lightness is the most important, and it has strong corrosion resistance and convenient processing, so aluminum alloy is the most ideal material for manufacturing aircraft.
Marine industry
Aluminum and aluminum alloys are used more and more widely in the shipbuilding industry, ranging from motorboats to 10,000-ton oil tankers, from offshore hovercraft to submarines, from civilian to military, from fishing boats to ocean mining ships, all of which have excellent comprehensive performance. Aluminum alloys for the production of ship shells, support structures, supporting facilities, pipes, etc.
Chemical Industry
Aluminum has good thermal conductivity. Aluminum and aluminum alloys are widely used in the production of heat exchange equipment in chemical equipment, storage tanks resistant to concentrated nitric acid corrosion, adsorption filters, fractionating towers, pipelines and many linings. Cast aluminum alloy has good fluidity, strong mold filling ability, small shrinkage rate, not easy to form cracks, good corrosion resistance (the surface can form aluminum oxide and silicon dioxide protective film), light weight, good mechanical properties, It is widely used in the manufacture of corrosion-resistant parts with complex structures, such as cylinders, pipe fittings, valves, pumps, pistons, etc. Aluminum has many special uses in chemical production. Aluminum does not produce sparks, and aluminum alloy can produce containers for easily volatile substances; aluminum is non-toxic, does not cause food deterioration, does not affect the appearance of products, and does not corrode products. Therefore, aluminum alloys are widely used in the production of related products in the food and chemical industry. equipment.
metal packaging
Aluminum alloy can be used for metal packaging, which has the following excellent characteristics: good mechanical properties, light weight, high compressive strength, durable, easy to store and transport goods; good barrier performance, can prevent damage to goods caused by sunlight, oxygen and humid environment , can extend the shelf life of items; good texture, aesthetic feeling, aluminum alloy used as packaging has a unique metallic luster, good touch, beautiful, improve product quality; non-toxic and easy to recycle, recyclable, save resources and reduce environmental pollution. Aluminum alloys are widely used in beer, beverage and other food cans, most of which are stamped and drawn. Aluminum foil containers are beautiful, light in weight, and good in heat transfer. They are used in the packaging of fast food. They have the functions of freshness preservation, flavor preservation, and non-toxicity. They are used by more and more food industries. The aluminum alloy metal hose can be squeezed and deformed, and the contents can be used after being squeezed. It is simple and convenient, and is often used in the packaging of cream cosmetics.
other industry
Aluminum alloy has high specific strength, light weight, good fluidity, strong filling ability, good corrosion resistance, and low melting point. It is widely used in tractors, locomotive parts, electronic products, medical equipment, architectural decoration and other industries. Aluminum alloy has excellent ductility and is widely used in the daily necessities industry and the food industry. In the field of power transmission, wires made of aluminum alloy are low in cost, light in weight, good in corrosion resistance, heat transfer and easy to conduct electricity, and wear-resistant, so they are more and more valued by people. In the field of power transmission, the use of aluminum alloy is the largest, and up to 90% of high-voltage wire materials are aluminum products. Aluminum-silicon alloy can be used as a good deoxidizer to reduce the sensitivity of steel to produce subcutaneous bubbles, and deoxidize steelmaking to improve the quality of steel. The market for aluminum-silicon alloy is large, and the annual demand in the country reaches one million tons.
