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Magnesium Alloys

Magnesium Alloys

What is Magnesium Alloys?

Magnesium alloys is an alloy composed of magnesium based on the addition of other elements. Its characteristics are: small density (about 1.8g/cm3), high strength, high modulus of elasticity, good heat dissipation, good shock absorption, the ability to withstand impact loads than aluminum alloys, good corrosion resistance to organic substances and alkali. The main alloying elements are aluminum, zinc, manganese, cerium, thorium and a small amount of zirconium or cadmium. The most widely used is magnesium-aluminum alloy, followed by magnesium-manganese alloy and magnesium-zinc-zirconium alloy. Mainly used in aviation, aerospace, transportation, chemical, rocket and other industrial sectors.

Magnesium Alloys
Magnesium Alloys

Magnesium Alloys Characters

Low density, good specific performance, good damping performance, good electrical and thermal conductivity, good process performance, poor corrosion resistance, easy oxidation and combustion, poor heat resistance.
Its processing and corrosion and mechanical properties have many characteristics: fast heat dissipation, light weight, good rigidity, certain corrosion resistance and dimensional stability, impact resistance, wear resistance, good attenuation performance and easy recycling; in addition there are high thermal and electrical conductivity, non-magnetic, good shielding and non-toxic characteristics.

Metal AlloyDenstiy
Magnesium Alloys Density
Magnesium Alloys Density

Magnesium alloy physical properties

Ultimate tensile strength230220315
Tensile yield strength150130160
Compression yield strength (mpa)165130120
Delay rate383.5
Impact strength2.73.93
Fatigue strength (mpa)97110138
Specific heat(J/kg℃)10501650963
Thermal conductivity726196.2
Modulus of elasticity454571
Die casting temperature630~680630~680640~660
Magnesium alloy physical properties
Magnesium Alloys characters
Magnesium alloy physical properties

Magnesium Alloy Advantage and disadvantage

  • Light Weight.
  • High strength
  • Good noise and vibration reduction performance — reduce noise transmission.
  • Good thermal conductivity — use with design-intensive electronic products.
  • Good electromagnetic shielding — can resist electromagnetic interference.
  • Excellent cutting performance — easy to process.
  • Good castability — can produce thin-walled parts.
  • Magnesium and iron reflect sluggish — conducive to mold production, for mold damage is small.
  • Melting danger is high

A. High temperature magnesium liquid + oxygen in the air -Oxidation burning

B. High-temperature magnesium liquid + water
Instant decomposition of water into hydrogen and oxygen + release energy

Application: Magnesium alloy is widely used in portable apparatus and automotive industry to achieve light weight.


In short, magnesium alloy has many advantages, with new energy vehicles and lightweight design, more and more parts to use magnesium alloy, although magnesium alloy is flammable, but for the die-casting factory, strict management and production process, but also can well control the risk of flammability, if you have magnesium alloy die-casting project, or die-casting materials, please contact us


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