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magnesium alloy auto dashboard

Magnesium alloys are well-known for being the lightest structural alloys [1].

They are made of magnesium, the lightest structural metal, mixed with other metal elements to improve the physical properties. These elements include manganese, aluminium, zinc, silicon, copper, zirconium, and rare-earth metals [2].

Some of magnesium’s favourable properties include low specific gravity and a high strength-to-weight ratio. As a result, the material lends itself to a range of automotive, aerospace, industrial, electronic, biomedical, and commercial applications

Properties and advantages Applications

Magnesium alloys cover a wide array of applications, from automotive and aerospace applications to electronic and biomedical uses.

Structural applications Automotive, aerospace, industrial, and commercial applications are examples of structural applications. The advantage of magnesium alloys to be used in such applications is their light weight, high strength-to-weight ratio, high stiffness-to-weight ratio, castability, machinability, and great damping [4].

Automotive: support brackets for brakes and clutch, housing for transmission

Aerospace: landing wheels, helicopter rotor fittings, gearbox housings

Industrial: high-speed operating machinery, such as textile machines

Commercial: luggage, hand tools, computer housings, ladders

Electronic applications Electronic applications include electronic packaging, hard drive arms, cell phone and portable media device housings. Magnesium alloys are being used instead of plastics due to their light weight, strength and durability. They also are relatively better for heat dissipation and protection against electromagnetic and radio frequency interference [5].

Medical applications Portable medical equipment and wheelchairs that require light material make good use of magnesium alloys. Also, cardiovascular stents and orthopaedic devices are potential applications of some magnesium alloys due to magnesium’s biocompatibility and bioabsorbability [4].

The biggest advantage of casting magnesium alloy dashboards is the reduction in manufacturing time.

Compared to aluminum, magnesium alloys offer many advantages, including better manufacturability, longer mold life, and faster solidification due to lower latent heat. Therefore, more components can be produced per unit time compared to aluminum.

According to the International Magnesium Association, magnesium is 33 percent lighter than aluminum and 75 percent lighter than steel. Despite its lower density, magnesium alloys have a strength-to-weight ratio comparable to aluminum. Magnesium and its alloys also have high vibration damping capabilities, making them a good material choice for high-speed applications.

There are some disadvantages, While magnesium alloys are attractive for a variety of weight-sensitive automotive applications, the material has some drawbacks, such as being expensive and prone to corrosion.

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