Aluminum - A green metal material with various advantages performance

Now people call aluminum as a green metal, energy-saving emission reduction of the metal, the best circulation of metal, energy storage of metal, light metal, inexhaustible metal with excellent performance. So What’s the advantages of aluminum?

1. Low density. According to the crystal structure, the theoretical density of single crystal aluminum is 2698.72kt / m3, which is 0.34% higher than that of single crystal, about 1/3 of steel and copper density. This is very important, without this, there is no such prosperity today, the cause of aerospace, although it can not say that there is no aluminum will not have today's aerospace industry, but no aluminum, aerospace will not be so prosperous, There is no low-density aluminum and aluminum alloy which can fly today fly high-speed railway train, faster than the helicopter!

2. Moderate mechanical properties. The greater the purity of aluminum, the lower the mechanical properties, and now can be made of tensile strength of 750N / mm2 engineering alloy, of course, this is individual, most of the tensile strength of aluminum alloy are 500N / mm2 below.

3. Good thermal conductivity. Aluminum has good thermal conductivity and conductivity, The combination of good electrical conductivity and low density makes it a good long-distance transmission conductor.

4. Superior corrosion resistance. Aluminum and aluminum alloy surface layer is also thinner than the cicada wing is not comparable to the alumina film, which is a layer of oxygen in the air with the formation of natural oxide film, this film is not only surprisingly thin, and very dense, can not penetrate oxygen , And aluminum was firmly connected, so that aluminum is no longer subject to corrosion, that is no longer oxidation, so that aluminum and aluminum alloy in the use of the period to the after treatment and remelting can be more than 95% of the recycled aluminum.