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5070 Aluminum vs. M1A Magnesium

5070 aluminum belongs to the aluminum alloys classification, while M1A magnesium belongs to the magnesium alloys.

For each property being compared, the top bar is 5070 aluminum and the bottom bar is M1A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
45
Elongation at Break, % 20
5.5
Fatigue Strength, MPa 150
88
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
18
Shear Strength, MPa 190
120
Tensile Strength: Ultimate (UTS), MPa 300
230
Tensile Strength: Yield (Proof), MPa 140
130

Thermal Properties

Latent Heat of Fusion, J/g 390
350
Maximum Temperature: Mechanical, °C 190
95
Melting Completion (Liquidus), °C 640
610
Melting Onset (Solidus), °C 550
580
Specific Heat Capacity, J/kg-K 900
990
Thermal Conductivity, W/m-K 130
150
Thermal Expansion, µm/m-K 24
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 31
35
Electrical Conductivity: Equal Weight (Specific), % IACS 100
190

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
12
Density, g/cm3 2.7
1.7
Embodied Carbon, kg CO2/kg material 8.8
24
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1170
970

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 51
11
Resilience: Unit (Modulus of Resilience), kJ/m3 150
180
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 50
71
Strength to Weight: Axial, points 31
38
Strength to Weight: Bending, points 37
49
Thermal Diffusivity, mm2/s 53
88
Thermal Shock Resistance, points 14
13

Alloy Composition

Aluminum (Al), % 92.4 to 95.7
0
Calcium (Ca), % 0
0 to 0.3
Chromium (Cr), % 0 to 0.3
0
Copper (Cu), % 0 to 0.25
0 to 0.050
Iron (Fe), % 0 to 0.4
0
Magnesium (Mg), % 3.5 to 4.5
97.2 to 98.8
Manganese (Mn), % 0.4 to 0.8
1.2 to 2.0
Nickel (Ni), % 0
0 to 0.010
Silicon (Si), % 0 to 0.25
0 to 0.1
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 0.4 to 0.8
0
Residuals, % 0
0 to 0.3