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7076 Aluminum vs. AZ63A Magnesium

7076 aluminum belongs to the aluminum alloys classification, while AZ63A 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 AZ63A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
46
Elongation at Break, % 6.2
2.2 to 8.0
Fatigue Strength, MPa 170
76 to 83
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 27
18
Shear Strength, MPa 310
110 to 160
Tensile Strength: Ultimate (UTS), MPa 530
190 to 270
Tensile Strength: Yield (Proof), MPa 460
81 to 120

Thermal Properties

Latent Heat of Fusion, J/g 380
350
Maximum Temperature: Mechanical, °C 170
120
Melting Completion (Liquidus), °C 630
610
Melting Onset (Solidus), °C 460
450
Specific Heat Capacity, J/kg-K 860
980
Thermal Conductivity, W/m-K 140
52 to 65
Thermal Expansion, µm/m-K 24
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35
12 to 15
Electrical Conductivity: Equal Weight (Specific), % IACS 100
59 to 74

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
12
Density, g/cm3 3.0
1.8
Embodied Carbon, kg CO2/kg material 8.0
22
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1110
970

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31
3.7 to 16
Resilience: Unit (Modulus of Resilience), kJ/m3 1510
71 to 160
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 45
66
Strength to Weight: Axial, points 49
29 to 41
Strength to Weight: Bending, points 48
40 to 51
Thermal Diffusivity, mm2/s 54
29 to 37
Thermal Shock Resistance, points 23
11 to 16

Alloy Composition

Aluminum (Al), % 86.9 to 91.2
5.3 to 6.7
Copper (Cu), % 0.3 to 1.0
0 to 0.25
Iron (Fe), % 0 to 0.6
0
Magnesium (Mg), % 1.2 to 2.0
88.6 to 92.1
Manganese (Mn), % 0.3 to 0.8
0.15 to 0.35
Nickel (Ni), % 0
0 to 0.010
Silicon (Si), % 0 to 0.4
0 to 0.3
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 7.0 to 8.0
2.5 to 3.5
Residuals, % 0
0 to 0.3