Comprehensive interpretation of the properties of eight series of aluminum and aluminum alloys
Aluminum has a lighter specific gravity, smaller rebound during forming, relatively high strength, close to or exceeding high-quality steel, and good plasticity. When the product is formed more complexly, it is easier to control than stainless steel. It has excellent electrical conductivity, thermal conductivity, and resistance. It is corrosive, and the surface treatment processes of aluminum such as anodizing, wire drawing, and sandblasting are already very mature. Aluminum is also widely used in mobile phones.
According to the processing method, aluminum alloy can be divided into deformed aluminum alloy and cast aluminum alloy. The numbers of aluminum and aluminum alloy are mainly divided into eight series.
A series of
Among all series, the 1000 series contains the most aluminum, and the purity can reach more than 99.00%. The minimum aluminum content of the 1000 series aluminum plate is determined based on the last two Arabic numerals of the series. For example, the last two Arabic numerals of the 1050 series are 50. According to the international brand naming principles, the aluminum content must reach more than 99.5% to be a qualified product.
The first series of aluminum has good formability and surface treatment properties, and its corrosion resistance is the best among aluminum alloys. Its strength is low, and the higher the purity, the lower its strength.
The commonly used ones on mobile phones are 1050, 1070, 1080, 1085, and 1100, which are used for simple extrusion molding (without bending). Among them, 1050 and 1100 can be used for chemical sanding, glossy, matte, and normal effects. The material texture is more obvious and the coloring effect is good; 1080 and 1085 mirror aluminum are often used for bright characters and matte effects without obvious material texture.
A series of aluminum materials are relatively soft and are mainly used for decorative or interior parts.
Second series
It is characterized by high hardness but poor corrosion resistance. Among them, the copper content is the highest. The 2000 series aluminum alloy represents 2024, 2A16, and 2A02. The copper content of the 2000 series aluminum plate is about 3% to 5%.
2000 series aluminum rods are aviation aluminum materials and are used as structural materials. They are currently not commonly used in conventional industries.
Three series
3000 series aluminum rods are mainly composed of manganese. The 3000 series aluminum alloys mainly represent 3003, 3105 and 3A21. The content is 1.0~1.5, which is a series with better anti-rust function.
It is commonly used as tanks and tanks for liquid products, construction processing parts, construction tools, various lighting parts, and various pressure vessels and pipes for sheet processing. Formability, weldability and corrosion resistance are all good.
Four series
Usually the silicon content is between 4.5% and 6.0%. The higher the silicon content, the higher the strength. The 4000 series aluminum rods are represented by 4A01 and 4000 series aluminum plates, which belong to the series with higher silicon content. It has good liquid flow and little solidification shrinkage. It is a building material, mechanical parts, forging materials, and welding materials. It has low melting point, good corrosion resistance, heat resistance, and wear resistance.