Those things about magnesium alloys
Jun 22, 2022
Regarding those things about magnesium alloys, magnesium is one of the light metal elements. The specific gravity of magnesium is 1.74g/cm3. Magnesium alloys are 36% lighter than aluminum alloys, 73% lighter than zinc alloys, and 77% lighter than steel.
Magnesium has high specific strength, high specific stiffness, good thermal conductivity and electrical conductivity, and has good electromagnetic shielding, damping, vibration damping, machinability and low processing cost, processing energy is only 70% of aluminum alloy and easy to recycle, etc. advantage.
The specific strength of magnesium alloy is higher than that of aluminum alloy and steel, slightly lower than that of fiber-reinforced plastic with the highest specific strength; the specific stiffness is comparable to that of aluminum alloy and steel, much higher than that of fiber-reinforced plastic; the wear resistance is much better than that of low-carbon steel, It has exceeded the die-casting aluminum alloy A380; the vibration damping performance and magnetic shielding performance are far superior to those of aluminum alloys.
Magnesium alloys are alloys composed of magnesium-based and other elements. The main alloying elements are aluminum, zinc, manganese, cerium, thorium and a small amount of zirconium or cadmium. At present, magnesium-aluminum alloys are widely used, followed by magnesium-manganese alloys and magnesium-zinc-zirconium alloys.
In addition to its low specific gravity, magnesium has many other favorable physical properties that make it sometimes more valuable than aluminum and plastics in automotive structural material applications. The main advantages of magnesium physical properties are: 30 times higher vibration damping performance than aluminum; 200 times higher thermal conductivity than plastic; its thermal expansion performance is only 1/2 of that of plastic.
