What are the characteristics of pure aluminum?
1. Low density: The density of pure aluminum is close to 2700kg/m3, which is about 35% of the density of iron.
2. Reinforceable: The strength of pure aluminum can be more than doubled by cold working. Moreover, it can be alloyed by adding magnesium, zinc, copper, manganese, silicon, lithium, scandium and other elements, and then further strengthened by heat treatment, and its specific strength is 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; drawn into tubes and filaments; kneaded into various civil profiles; can be machined, milled, bored, and planed at the maximum speed that the machine tool can reach .
4. Corrosion resistance: A thin and strong Al2O3 protective film is easy to form on the surface of aluminum and its alloys. This protective film only needs to be damaged by the violent effects of halogen ions or alkali ions. Therefore, aluminum has good resistance to atmospheric (including industrial atmosphere and ocean vapor) corrosion and water corrosion. It can resist the corrosion of most acids and organics, and the corrosion inhibitor is selected to resist weak alkali corrosion; the protection measures can be used to improve the corrosion resistance of aluminum alloy.
5. No low-temperature brittleness: Aluminum is below zero degrees Celsius. As the temperature drops, the strength and plasticity will not decrease, but will advance.
6. Good electrical and thermal conductivity: Aluminum's electrical and thermal conductivity are inferior to silver, copper and gold.
7. Strong reflectivity: The reflectivity of the polished aluminum surface to white light is over 80%. The higher the purity, the higher the reflectivity. At the same time, aluminum has excellent reflection functions for infrared, ultraviolet, electromagnetic waves, and heat radiation.
8. No magnetism, no sparks from impact. 9. There is sound absorption. 10. Resistance to nuclear radiation. 11. Beautiful.