The purity can reach above 99.00%. Because it does not contain other technical elements, the manufacturing process is relatively simple and the price is relatively cheap. It is the most commonly used series in conventional industries at present. At present, most of them are 1050 and 1060 series.
Excellent characteristics of pure aluminum:
1. Low density: the density of pure aluminum is close to 2700kg/m3, which is about 35% of that of iron.
2. Hardenability: Through cold working, the strength of pure aluminum can be more than doubled. Moreover, it can be alloyed by adding magnesium, zinc, copper, manganese, silicon, lithium, scandium and other elements, and then further strengthened by heat treatment. The specific strength can be comparable to that of high-quality alloy steel.
3. Easy to process: Aluminum can be cast by any casting method. Aluminum has good plasticity and can be rolled into thin plates and foils; Drawing into tubes and filaments; Extruded into various civil profiles; Machining such as turning, milling, boring and planing can be carried out at the maximum speed that most machine tools can achieve.
4. Corrosion resistance: On the surface of aluminum and its alloy, it is easy to form a dense and firm Al2O3 protective film. This kind of protective film will only be destroyed under the strong action of halogen ions or alkali ions. Therefore, aluminum has good atmospheric (including industrial atmosphere and marine steam) corrosion resistance and water corrosion resistance. It can resist the corrosion of most acids and organic substances, and the corrosion inhibitor can resist the corrosion of weak alkali solution; The corrosion resistance of aluminum alloy can be improved by taking protective measures.
5. Not brittle at low temperature: When the temperature of aluminum is below zero, the strength and plasticity will not decrease, but will increase.
6. Good electrical and thermal conductivity: The electrical and thermal conductivity of aluminum is not as good as that of silver, copper and gold.
7. Strong reflectivity: The reflectivity of polished aluminum surface to white light is above 80%, and the higher the purity, the higher the reflectivity. At the same time, aluminum has good reflection performance for infrared rays, ultraviolet rays, electromagnetic waves and thermal radiation.
8. No magnetism, no sparks generated by collision. 9. Sound absorption. 10. Resistant to nuclear radiation. 1 1. It's beautiful.