Magnesium alloy and aluminum alloy are one of the commonly used materials in precision parts processing. There are some differences in nature and application, which are described in detail below.

First, magnesium alloys and aluminum alloys have significant differences in density. Magnesium alloys have a lower density, about twice that of aluminum alloys, which makes parts made using magnesium alloys lighter and suitable for applications with higher weight requirements, such as the aerospace and automotive industries.

Secondly, magnesium and aluminum alloys are also different in terms of strength. Although the density of magnesium alloys is low, its strength is relatively high and it has a good specific strength, which is suitable for applications requiring high strength and lightweight. The aluminum alloy is relatively light, low strength, but has good plasticity and machinability.

Moreover, magnesium alloys and aluminum alloys are also different in corrosion resistance. Magnesium alloys are prone to corrosion in environments with high humidity, especially when exposed to salt water or other corrosive media. The aluminum alloy has good corrosion resistance and good resistance to most common corrosive media.

In addition, magnesium alloys and aluminum alloys also differ in terms of thermal conductivity and electrical conductivity. Magnesium alloys have good thermal and electrical conductivity and are suitable for applications that require good heat dissipation and electrical conductivity, such as electronic device heat sinks. Aluminum alloys have better thermal and electrical conductivity and are suitable for applications requiring higher thermal and electrical conductivity.

In general, magnesium alloys and aluminum alloys differ in density, strength, corrosion resistance and thermal conductivity. The selection of the appropriate material depends on the requirements of the specific application, which requires comprehensive consideration of the characteristics and properties of the material.