Warning: Cannot modify header information - headers already sent by (output started at /www/wwwroot/hjyhardware.com/index.php:1) in /www/wwwroot/hjyhardware.com/wp-content/plugins/wp-rocket/inc/classes/Buffer/class-cache.php on line 212
Magnesium Alloy in Die Casting – HJY

Magnesium Alloy in Die Casting

Magnesium die casting is a metal die casting process used to create magnesium alloy parts that are lightweight but have good strength and corrosion resistance. The process includes material preparation, mold design, injection, curing and possible trimming and machining steps. Magnesium die casting is widely used in areas such as automotive and aerospace to reduce weight and improve performance.

Why magnesium is used in die casting

Magnesium is used in die casting because of its lightweight properties, which allow the manufactured parts to be significantly lighter. It also has good strength, rigidity and corrosion resistance, making it suitable for a variety of engineering applications. It also has excellent thermal conductivity and is available For areas with high heat dissipation requirements.

Lightweight Performance: Magnesium is a very light metal, with a density approximately twice that of aluminum and one-fourth that of steel. Therefore, using magnesium to manufacture parts can significantly reduce the weight of the part, which is important for some applications such as automotive manufacturing and aerospace as it can increase fuel efficiency, reduce transportation costs, and improve performance.

Strength and stiffness: Although magnesium is lightweight, magnesium alloys still have good strength and stiffness and are able to meet various engineering requirements. This makes magnesium alloys very useful in the manufacture of parts requiring structural properties.

Corrosion resistance: Magnesium alloys generally have good corrosion resistance and can be used in harsh environments for a long time, which makes them suitable for some applications that require weather resistance.

Thermal Conductivity: Magnesium alloys have good thermal conductivity properties, making them useful in applications that require heat dissipation, such as electronic equipment and engine components.

Magnesium Alloys

Performance comparison of magnesium alloys and aluminum alloys in die casting

A comparison of the performance of magnesium alloys and aluminum alloys in die casting shows that magnesium alloys have lower density, medium to high strength, and high thermal conductivity. They are suitable for areas that require weight reduction and improved heat dissipation performance, but their manufacturing complexity and the cost is relatively high. In contrast, aluminum alloys have high density, moderate to high strength, high thermal conductivity, good corrosion resistance, and relatively low cost.

Performance Characteristics Magnesium Alloys Aluminum Alloys

Density (g/cm³)

Approximately 1.7

Approximately 2.7

Strength (MPa)

Medium to High

Medium to High

Thermal Conductivity (W/m·K)



Corrosion Resistance

Fair to Good


Manufacturing Complexity


Low to Moderate

Melting Point (°C)

Approximately 650 – 700

Approximately 660 – 660

Modulus of Elasticity (GPa)

Approximately 44 – 45

Approximately 70 – 80

Electrical Conductivity (MS/m)




Relatively High

Relatively Low

Application Areas

Aerospace, Automotive Parts, Electronics

Automotive Parts, Construction, Packaging


Magnesium alloy die-casting has attracted much attention and application because it represents a trend of pursuing lightweight, high performance and sustainability in different industrial fields. Magnesium alloy die casting represents an advancement in materials science and engineering technology that will continue to play a key role in modern manufacturing, driving product optimization and innovation.

Table of Contents

Date Archive

Contact Us

Shatian industrial zone,Kengzi town,Longgang district, Shenzhen, China

Scroll to Top