Comparison of the properties of magnesium alloys and aluminium alloys

Comparison of the properties of magnesium alloys and aluminium alloys

Magnesium is a very important non-ferrous metal, it is lighter than aluminium, can be very good with other metals to form a high strength alloy, magnesium alloy has a light specific gravity, than the strength and stiffness of high, good thermal conductivity, both good damping and electromagnetic shielding properties, easy to process molding, easy to recycle and other advantages.

But for a long time, due to the expensive and technical limitations, magnesium and magnesium alloy only a small number of applications in aviation, aerospace and military industry, and therefore is known as the "noble metal".

Today magnesium is the third largest metal engineering material after steel and aluminium, and is widely used in aerospace, automotive, electronics, mobile communications, metallurgy and other fields. It can be expected that magnesium metal will become even more important in the future due to the increase in production costs of other structural metals.

The proportion of magnesium alloy is 68% of aluminium alloy, 27% of zinc alloy, 23% of steel, commonly used in automotive parts, 3C products shell, construction materials, etc. Most ultra-thin laptops and mobile phone shells use magnesium alloy for the shell.

Since the last century, human beings still have an undeniable love for metal texture and luster, plastic products can form a metal-like appearance, but its sense of luster, hardness, temperature, texture still has a gap with metal. Magnesium alloy as a new metal raw material, give a high-tech goods feeling.

The corrosion resistance of magnesium alloy is 8 times that of carbon steel, 4 times that of aluminium alloy, more than 10 times that of plastic, and the corrosion resistance is the best of the alloys. Commonly used magnesium alloys are non-combustible, especially when used in automobile and locomotive parts and construction materials, can avoid instant combustion.