Introduction to the characteristics of aluminum and the secondary processing technology of aluminum parts

Aluminum is one of the metal elements with the widest distribution and most reserves in the earth's crust, accounting for about 8.3% of the total mass of the earth's crust, second only to oxygen and silicon, and higher than iron (about 4.75%), magnesium (about 2.1%) and titanium (Approximately 0.6%) the sum is still more. Its chemical element symbol is Al, the relative atomic mass is 26.98154, and the common valence is +3.