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EV31A Magnesium vs. 4104 Aluminum

EV31A magnesium belongs to the magnesium alloys classification, while 4104 aluminum belongs to the aluminum alloys. There are 24 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is EV31A magnesium and the bottom bar is 4104 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
71
Elongation at Break, % 3.5
2.4
Fatigue Strength, MPa 120
42
Poisson's Ratio 0.27
0.33
Shear Modulus, GPa 17
27
Shear Strength, MPa 170
63
Tensile Strength: Ultimate (UTS), MPa 260
110
Tensile Strength: Yield (Proof), MPa 170
60

Thermal Properties

Maximum Temperature: Mechanical, °C 200
160
Melting Onset (Solidus), °C 590
560
Specific Heat Capacity, J/kg-K 1000
900
Thermal Conductivity, W/m-K 86
130
Thermal Expansion, µm/m-K 27
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 18
33
Electrical Conductivity: Equal Weight (Specific), % IACS 90
120

Otherwise Unclassified Properties

Density, g/cm3 1.8
2.6

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 8.1
2.3
Resilience: Unit (Modulus of Resilience), kJ/m3 330
25
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 65
54
Strength to Weight: Axial, points 40
12
Strength to Weight: Bending, points 50
20
Thermal Diffusivity, mm2/s 47
58
Thermal Shock Resistance, points 16
5.1