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7076 Aluminum vs. ZK61A Magnesium

7076 aluminum belongs to the aluminum alloys classification, while ZK61A magnesium belongs to the magnesium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is 7076 aluminum and the bottom bar is ZK61A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
46
Elongation at Break, % 6.2
5.8 to 7.1
Fatigue Strength, MPa 170
120 to 140
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 27
18
Shear Strength, MPa 310
170 to 180
Tensile Strength: Ultimate (UTS), MPa 530
290 to 310
Tensile Strength: Yield (Proof), MPa 460
180 to 200

Thermal Properties

Latent Heat of Fusion, J/g 380
330
Maximum Temperature: Mechanical, °C 170
120
Melting Completion (Liquidus), °C 630
640
Melting Onset (Solidus), °C 460
530
Specific Heat Capacity, J/kg-K 860
960
Thermal Conductivity, W/m-K 140
120
Thermal Expansion, µm/m-K 24
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35
29
Electrical Conductivity: Equal Weight (Specific), % IACS 100
130

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
13
Density, g/cm3 3.0
1.9
Embodied Carbon, kg CO2/kg material 8.0
23
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1110
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31
15 to 19
Resilience: Unit (Modulus of Resilience), kJ/m3 1510
370 to 420
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 45
62
Strength to Weight: Axial, points 49
42 to 45
Strength to Weight: Bending, points 48
50 to 53
Thermal Diffusivity, mm2/s 54
65
Thermal Shock Resistance, points 23
17 to 18

Alloy Composition

Aluminum (Al), % 86.9 to 91.2
0
Copper (Cu), % 0.3 to 1.0
0 to 0.1
Iron (Fe), % 0 to 0.6
0
Magnesium (Mg), % 1.2 to 2.0
92.1 to 93.9
Manganese (Mn), % 0.3 to 0.8
0
Nickel (Ni), % 0
0 to 0.010
Silicon (Si), % 0 to 0.4
0
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 7.0 to 8.0
5.5 to 6.5
Zirconium (Zr), % 0
0.6 to 1.0
Residuals, % 0
0 to 0.3