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Magnesium Properties and alloys for extrusions

The tables below list some common properties of magnesium and the compositions of common magnesium alloys for extrusions.

General Physical Properties

Property Unit Temperature AZ91 AM60 AM50 AM20 AS41 AS21 AE42
Density g/cm3 20 1.81 1.8 1.77 1.75 1.77 1.76 1.79
Liquid Temperature °C   598 615 620 638 617 632 625
Dissolve Temperature °C   420-435 420-435 420-435 420-435 420-435 420-435 420-435
Heat expansion um/m/*.k 20-100 26 26 26 26 26.1 26.1 26.1
Specific heat of fusion kj/kg*   370 370 370 370 370 370 370
Heat ratio J/kg*K 20 1.02 1.02 1.02 1.02 1.02 1.02 1.02
Heat transfer W/K*m 20 50 61 65 94 68 84 84
Electrical Resistance μΩcm   14.1 12.5 12.5        
洛桑比 mm/m   0.35 0.35 0.35 0.35 0.35 0.35 0.35
Conductivity MS/m 20 6.6 nm 9.1 13.1 nm 10.8 11.7

Magnesium Alloys for Extrusion

Alloy Alloy Chemistry, (%) Application
  Al Mn Zn Zr Mg  
AZ31B and CF 3 0.2 1 NA balance general rigidity
AZ31B-H24 3 0.2 1 NA balance good rigidity, normal temperature
AZ61A-F 6.5 0.15 1 NA balance good rigidity, avg. cost
AZ80A-T5 8.5 0.12 0.5 NA balance high rigidity
ZK60A-T5 NA NA 5.5 0.45 balance high rigidity, unweldable