Aluminum alloy 3003 is industrial pure aluminum, which has high plasticity, corrosion resistance, electrical conductivity and thermal conductivity, but its strength is low, heat treatment can not strengthen, and its machinability is poor.
Detailed introduction
About 3003 Aluminium
Aluminum manganese alloy series is a common product. Due to the manganese alloy element, this product has excellent antirust properties. Its strength is about 10% higher than that of 1100, and its formability, solubility and corrosion resistance are good.
It is used to process parts with good formability, high corrosion resistance and good weldability, or work with these properties and higher strength than 1xxx alloy, such as kitchen utensils, food and chemical products processing and storage devices, tanks and tanks for transporting liquid products, various pressure vessels and pipes processed with thin plates, general utensils, heat sinks, cosmetic plates, etc Photocopier cylinder, ship material.
Chemical Composition and Mechanical Property
Al | Si | Cu | Mg | Zn | Mn | Ti | Ni | Fe+Ni | Fe |
余量 | ≤0.60 | 0.05-0.20 | --- | ≤0.10 | 1.00-1.50 | --- | --- | --- | ≤0.70 |
Tensile Strength(Mpa) | 140-180 |
yield strength(Mpa) | ≥115 |
EL(%) | ≤2% |
Density(g/cm³) | 2.75 |
Corrosion resistance: 3003 has good corrosion resistance, which is close to the corrosion resistance of industrial pure aluminum. It has good corrosion resistance to atmosphere, fresh water, sea water, food, organic acid, gasoline, neutral inorganic saline solution, etc., and also has good corrosion resistance in dilute acid.
In the cold deformation state, 3003 aluminum alloy has the tendency of exfoliation corrosion. The larger the deformation is, the more serious the exfoliation is. Due to the uneven color after anodizing, anodizing treatment is generally not carried out.
Characteristic for 3003
3003 is al Mn alloy, which is one of the most widely used antirust aluminum. The strength of this alloy is not high (slightly higher than that of industrial pure aluminum) and can not be strengthened by heat treatment. Therefore, cold working method is adopted to improve its mechanical properties: it has high plasticity in annealing state, good plasticity in semi cold hardening, low plasticity in cold hardening, good corrosion resistance and good weldability, Poor machinability. It is mainly used for low load parts that require high plasticity and good weldability and work in liquid or gas medium, such as oil tank, gasoline or lubricating oil conduit, various liquid containers and other low load parts made by deep drawing: wire rod is used for rivets.
Applications for 3003
The product is often used in packaging, mechanical parts, refrigerators, air conditioning ventilation pipes and other humid environment, the product has good rust resistance. It is commonly used in ships, ships, vehicles, automobile and aircraft plate welding parts, pressure vessels requiring strict fire protection, refrigeration devices, television towers, drilling equipment, transportation equipment, missile components, armor, etc.
Heat treatment process for 3003
1) Complete annealing: 390-430 ℃; With the different effective thickness of the material, the holding time is 30-120 min; At the speed of 30-50 ℃ / h, it is cooled to 300 ℃ with the furnace, and then air cooled.
2) Rapid annealing: 350-370 ℃; With the different effective thickness of the material, the holding time is 30-120 min; Air or water cooled.
3) Quenching and aging: quenching 500 ~ 510 ℃, air cooling; Artificial aging 95 ~ 105 ℃, 3 h, air cooling; Natural aging 120h at room temperature.
