Why is magnesium alloy an ideal material for aircraft manufacturing?

Q: Can magnesium alloys be used in large quantities to make parts for rockets, aircraft and missiles?


First of all, we need to know what magnesium alloy is?

Magnesium alloy is an alloy composed of magnesium and other elements.

Its characteristics are: small density, high specific strength, large elastic modulus, good heat dissipation, good shock resistance, impact load capacity than aluminum alloy, organic and alkali corrosion resistance is good.

Mainly used in aviation, aerospace, transportation, chemical, rocket and other industrial sectors. The lightest of the practical metals, magnesium is about two thirds as specific as aluminum and one quarter as specific as iron. It is the lightest of practical metals, high strength, high rigidity.

Magnesium alloy is the lightest metal structural material used in aircraft, spacecraft and rocket missile manufacturing industry. Magnesium is lighter than aluminum with a specific gravity of 1.8 and has a lower strength of 200 to 300 mpa. It is mainly used in low-bearing parts.

Easily oxidized and corroded would make an ideal material for aircraft?

Magnesium alloys are prone to oxidation and corrosion in humid air, so the surface needs to be chemically treated or painted before parts can be used.

Here’s an example:

The fuselage of the B-52 bomber used 635 kilograms of magnesium alloy sheets, 90 kilograms of extrusions, and more than 200 kilograms of castings.

Magnesium alloy is also used in some parts of missiles and satellites, such as the instrument bay, tail bay and engine bracket of China’s surface-to-air missile.

Scroll to Top