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7049A-T6 Aluminum vs. EN-MC21120-T6

7049A-T6 aluminum belongs to the aluminum alloys classification, while EN-MC21120-T6 belongs to the magnesium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is 7049A-T6 aluminum and the bottom bar is EN-MC21120-T6.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
46
Elongation at Break, % 5.7
2.2
Fatigue Strength, MPa 180
96
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 27
18
Shear Strength, MPa 350
150
Tensile Strength: Ultimate (UTS), MPa 590
270
Tensile Strength: Yield (Proof), MPa 500
170

Thermal Properties

Latent Heat of Fusion, J/g 370
350
Maximum Temperature: Mechanical, °C 200
130
Melting Completion (Liquidus), °C 640
600
Melting Onset (Solidus), °C 430
490
Specific Heat Capacity, J/kg-K 850
990
Thermal Conductivity, W/m-K 130
76
Thermal Expansion, µm/m-K 24
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
11
Electrical Conductivity: Equal Weight (Specific), % IACS 120
59

Otherwise Unclassified Properties

Base Metal Price, % relative 10
12
Density, g/cm3 3.1
1.7
Embodied Carbon, kg CO2/kg material 8.2
22
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1100
990

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 32
5.3
Resilience: Unit (Modulus of Resilience), kJ/m3 1800
320
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 44
69
Strength to Weight: Axial, points 53
43
Strength to Weight: Bending, points 51
53
Thermal Diffusivity, mm2/s 50
44
Thermal Shock Resistance, points 25
16

Alloy Composition

Aluminum (Al), % 84.6 to 89.5
8.3 to 9.7
Chromium (Cr), % 0.050 to 0.25
0
Copper (Cu), % 1.2 to 1.9
0 to 0.030
Iron (Fe), % 0 to 0.5
0 to 0.0050
Magnesium (Mg), % 2.1 to 3.1
88.6 to 91.3
Manganese (Mn), % 0 to 0.5
0.1 to 0.5
Nickel (Ni), % 0
0 to 0.0020
Silicon (Si), % 0 to 0.4
0 to 0.2
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 7.2 to 8.4
0.35 to 1.0
Zirconium (Zr), % 0 to 0.25
0
Residuals, % 0
0 to 0.010