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6070 Aluminum vs. EN-MC21320 Magnesium

6070 aluminum belongs to the aluminum alloys classification, while EN-MC21320 magnesium 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 6070 aluminum and the bottom bar is EN-MC21320 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
45
Elongation at Break, % 5.6 to 8.6
7.5
Fatigue Strength, MPa 95 to 130
95
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
18
Shear Strength, MPa 220 to 240
130
Tensile Strength: Ultimate (UTS), MPa 370 to 380
230
Tensile Strength: Yield (Proof), MPa 350
140

Thermal Properties

Latent Heat of Fusion, J/g 410
370
Maximum Temperature: Mechanical, °C 160
110
Melting Completion (Liquidus), °C 650
600
Melting Onset (Solidus), °C 570
530
Specific Heat Capacity, J/kg-K 900
1000
Thermal Conductivity, W/m-K 160
66
Thermal Expansion, µm/m-K 23
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 41
17
Electrical Conductivity: Equal Weight (Specific), % IACS 140
91

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
12
Density, g/cm3 2.7
1.6
Embodied Carbon, kg CO2/kg material 8.3
23
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1170
980

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 20 to 32
15
Resilience: Unit (Modulus of Resilience), kJ/m3 880 to 900
200
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 50
72
Strength to Weight: Axial, points 38
38
Strength to Weight: Bending, points 42 to 43
50
Thermal Diffusivity, mm2/s 65
40
Thermal Shock Resistance, points 16 to 17
13

Alloy Composition

Aluminum (Al), % 94.6 to 98
3.5 to 5.0
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 0.15 to 0.4
0 to 0.010
Iron (Fe), % 0 to 0.5
0 to 0.0050
Magnesium (Mg), % 0.5 to 1.2
92.5 to 95.9
Manganese (Mn), % 0.4 to 1.0
0.1 to 0.7
Nickel (Ni), % 0
0 to 0.0020
Silicon (Si), % 1.0 to 1.7
0.5 to 1.5
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 0 to 0.25
0 to 0.2
Residuals, % 0
0 to 0.010