Selection and basic knowledge of aluminum profiles
1、 Basic properties of aluminum
Silver white, can form a layer of oxide film to prevent metal corrosion in humid air, with a relative density of 2.7g/cm3, melting point of 660 ℃, boiling point of 2327 ℃, high specific strength, good conductivity and thermal conductivity, high reflectivity and oxidation resistance.
2、 Category
Profile category: aluminum profiles, aluminum pipes, aluminum bars, etc
Plate type: aluminum sheet, aluminum foil, aluminum strip (coil material)
Casting category: aluminum castings, aluminum particles
3、 Common grades
The first digit of the brand represents the aluminum alloy series, the second digit represents the modification of the original aluminum alloy, and the last two digits represent the purity of the aluminum alloy in the same group.
1100: For processing, good formability and high corrosion resistance are required, but high-strength parts are not required. For example, storage containers, sheet metal parts, deep drawn concave vessels, heat exchangers, printed plates, nameplates, reflective devices, etc.
2011: Fast cutting alloy, with good cutting performance and high strength, but poor corrosion resistance, suitable for volume shafts, optical components, screw heads, screws, and mechanical processing products that require good cutting performance.
3003: With the properties of 1xxx series alloys and higher strength than 1xxxx series alloys, such as kitchen utensils, food and chemical product processing and storage devices, tanks and tanks for transporting liquid products, as well as various pressure vessels and pipelines for sheet metal processing.
4A01: High silicon content, heat resistant, wear-resistant, suitable for building materials, mechanical parts, forging materials, and welding materials.
5052: The most representative alloy of medium strength (5083 is the highest), with good corrosion resistance, dissolution and formability, especially high fatigue strength and good seawater resistance. It is used in the manufacturing of aircraft fuel tanks, oil pipes, as well as sheet metal parts for transportation vehicles and ships, instruments, street light brackets and rivets, hardware products, etc.
6061: Heat treated corrosion-resistant alloy. T6 treatment can have a very high endurance value, but the strength of the fusion interface is low, making it suitable for screws, ships, vehicles, and onshore structures.
6N01: Medium strength extrusion alloy that can be used for complex shaped large thin meat profiles, with excellent corrosion resistance and solubility. Suitable for vehicles, onshore structures, and ships.
6063: Representative extrusion alloy with lower strength than 6061 and good extrusion performance. It can be used as profiles with complex cross-sectional shapes, with excellent corrosion resistance and surface treatment. It is suitable for building highway guardrails, vehicles, furniture, household appliances, and decorations.
7072: Low electrode potential, mainly used for anti-corrosion covering materials, also suitable for heat exchanger fins, air conditioner aluminum foil, and ultra-thin strip materials.
7075: One of the alloys with the highest strength in aluminum alloys, but with poor corrosion resistance. The coating with 7072 can improve its corrosion resistance, but the cost increases. It is suitable for aircraft and ski pole thick plate forging.
Silver white, can form a layer of oxide film to prevent metal corrosion in humid air, with a relative density of 2.7g/cm3, melting point of 660 ℃, boiling point of 2327 ℃, high specific strength, good conductivity and thermal conductivity, high reflectivity and oxidation resistance.
2、 Category
Profile category: aluminum profiles, aluminum pipes, aluminum bars, etc
Plate type: aluminum sheet, aluminum foil, aluminum strip (coil material)
Casting category: aluminum castings, aluminum particles
3、 Common grades
The first digit of the brand represents the aluminum alloy series, the second digit represents the modification of the original aluminum alloy, and the last two digits represent the purity of the aluminum alloy in the same group.
1100: For processing, good formability and high corrosion resistance are required, but high-strength parts are not required. For example, storage containers, sheet metal parts, deep drawn concave vessels, heat exchangers, printed plates, nameplates, reflective devices, etc.
2011: Fast cutting alloy, with good cutting performance and high strength, but poor corrosion resistance, suitable for volume shafts, optical components, screw heads, screws, and mechanical processing products that require good cutting performance.
3003: With the properties of 1xxx series alloys and higher strength than 1xxxx series alloys, such as kitchen utensils, food and chemical product processing and storage devices, tanks and tanks for transporting liquid products, as well as various pressure vessels and pipelines for sheet metal processing.
4A01: High silicon content, heat resistant, wear-resistant, suitable for building materials, mechanical parts, forging materials, and welding materials.
5052: The most representative alloy of medium strength (5083 is the highest), with good corrosion resistance, dissolution and formability, especially high fatigue strength and good seawater resistance. It is used in the manufacturing of aircraft fuel tanks, oil pipes, as well as sheet metal parts for transportation vehicles and ships, instruments, street light brackets and rivets, hardware products, etc.
6061: Heat treated corrosion-resistant alloy. T6 treatment can have a very high endurance value, but the strength of the fusion interface is low, making it suitable for screws, ships, vehicles, and onshore structures.
6N01: Medium strength extrusion alloy that can be used for complex shaped large thin meat profiles, with excellent corrosion resistance and solubility. Suitable for vehicles, onshore structures, and ships.
6063: Representative extrusion alloy with lower strength than 6061 and good extrusion performance. It can be used as profiles with complex cross-sectional shapes, with excellent corrosion resistance and surface treatment. It is suitable for building highway guardrails, vehicles, furniture, household appliances, and decorations.
7072: Low electrode potential, mainly used for anti-corrosion covering materials, also suitable for heat exchanger fins, air conditioner aluminum foil, and ultra-thin strip materials.
7075: One of the alloys with the highest strength in aluminum alloys, but with poor corrosion resistance. The coating with 7072 can improve its corrosion resistance, but the cost increases. It is suitable for aircraft and ski pole thick plate forging.
