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7005 Aluminum vs. EV31A Magnesium

7005 aluminum belongs to the aluminum alloys classification, while EV31A magnesium belongs to the magnesium 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 7005 aluminum and the bottom bar is EV31A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
44
Elongation at Break, % 10 to 20
3.5
Fatigue Strength, MPa 100 to 190
120
Poisson's Ratio 0.33
0.27
Shear Modulus, GPa 26
17
Shear Strength, MPa 120 to 230
170
Tensile Strength: Ultimate (UTS), MPa 200 to 400
260
Tensile Strength: Yield (Proof), MPa 95 to 350
170

Thermal Properties

Maximum Temperature: Mechanical, °C 200
200
Melting Onset (Solidus), °C 610
590
Specific Heat Capacity, J/kg-K 880
1000
Thermal Conductivity, W/m-K 140 to 170
86
Thermal Expansion, µm/m-K 23
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35 to 43
18
Electrical Conductivity: Equal Weight (Specific), % IACS 110 to 130
90

Otherwise Unclassified Properties

Density, g/cm3 2.9
1.8

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 32 to 57
8.1
Resilience: Unit (Modulus of Resilience), kJ/m3 65 to 850
330
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 47
65
Strength to Weight: Axial, points 19 to 38
40
Strength to Weight: Bending, points 26 to 41
50
Thermal Diffusivity, mm2/s 54 to 65
47
Thermal Shock Resistance, points 8.7 to 18
16