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A357.0 Aluminum vs. AZ31C Magnesium

A357.0 aluminum belongs to the aluminum alloys classification, while AZ31C 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 A357.0 aluminum and the bottom bar is AZ31C magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
45
Elongation at Break, % 3.7
12
Fatigue Strength, MPa 100
150
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
17
Shear Strength, MPa 240
130
Tensile Strength: Ultimate (UTS), MPa 350
260
Tensile Strength: Yield (Proof), MPa 270
200

Thermal Properties

Latent Heat of Fusion, J/g 500
350
Maximum Temperature: Mechanical, °C 170
110
Melting Completion (Liquidus), °C 610
600
Melting Onset (Solidus), °C 560
550
Specific Heat Capacity, J/kg-K 900
990
Thermal Conductivity, W/m-K 160
130
Thermal Expansion, µm/m-K 21
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
19
Electrical Conductivity: Equal Weight (Specific), % IACS 140
98

Otherwise Unclassified Properties

Base Metal Price, % relative 12
12
Density, g/cm3 2.6
1.7
Embodied Carbon, kg CO2/kg material 8.2
23
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1110
970

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12
28
Resilience: Unit (Modulus of Resilience), kJ/m3 520
440
Stiffness to Weight: Axial, points 15
15
Stiffness to Weight: Bending, points 53
70
Strength to Weight: Axial, points 38
42
Strength to Weight: Bending, points 43
53
Thermal Diffusivity, mm2/s 68
74
Thermal Shock Resistance, points 17
16

Alloy Composition

Aluminum (Al), % 90.8 to 93
2.4 to 3.6
Beryllium (Be), % 0.040 to 0.070
0
Copper (Cu), % 0 to 0.2
0 to 0.1
Iron (Fe), % 0 to 0.2
0
Magnesium (Mg), % 0.4 to 0.7
93.4 to 97
Manganese (Mn), % 0 to 0.1
0.15 to 1.0
Nickel (Ni), % 0
0 to 0.030
Silicon (Si), % 6.5 to 7.5
0 to 0.1
Titanium (Ti), % 0.040 to 0.2
0
Zinc (Zn), % 0 to 0.1
0.5 to 1.5
Residuals, % 0
0 to 0.3