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358.0 Aluminum vs. AZ31C Magnesium

358.0 aluminum belongs to the aluminum alloys classification, while AZ31C magnesium belongs to the magnesium alloys.

For each property being compared, the top bar is 358.0 aluminum and the bottom bar is AZ31C magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
45
Elongation at Break, % 3.5 to 6.0
12
Fatigue Strength, MPa 100 to 110
150
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
17
Shear Strength, MPa 300 to 320
130
Tensile Strength: Ultimate (UTS), MPa 350 to 370
260
Tensile Strength: Yield (Proof), MPa 290 to 320
200

Thermal Properties

Latent Heat of Fusion, J/g 520
350
Maximum Temperature: Mechanical, °C 170
110
Melting Completion (Liquidus), °C 600
600
Melting Onset (Solidus), °C 560
550
Specific Heat Capacity, J/kg-K 900
990
Thermal Conductivity, W/m-K 150
130
Thermal Expansion, µm/m-K 21
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 36
19
Electrical Conductivity: Equal Weight (Specific), % IACS 130
98

Otherwise Unclassified Properties

Base Metal Price, % relative 19
12
Density, g/cm3 2.6
1.7
Embodied Carbon, kg CO2/kg material 8.7
23
Embodied Energy, MJ/kg 160
160
Embodied Water, L/kg 1090
970

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12 to 20
28
Resilience: Unit (Modulus of Resilience), kJ/m3 590 to 710
440
Stiffness to Weight: Axial, points 15
15
Stiffness to Weight: Bending, points 53
70
Strength to Weight: Axial, points 37 to 39
42
Strength to Weight: Bending, points 42 to 44
53
Thermal Diffusivity, mm2/s 63
74
Thermal Shock Resistance, points 16 to 17
16

Alloy Composition

Aluminum (Al), % 89.1 to 91.8
2.4 to 3.6
Beryllium (Be), % 0.1 to 0.3
0
Chromium (Cr), % 0 to 0.2
0
Copper (Cu), % 0 to 0.2
0 to 0.1
Iron (Fe), % 0 to 0.3
0
Magnesium (Mg), % 0.4 to 0.6
93.4 to 97
Manganese (Mn), % 0 to 0.2
0.15 to 1.0
Nickel (Ni), % 0
0 to 0.030
Silicon (Si), % 7.6 to 8.6
0 to 0.1
Titanium (Ti), % 0.1 to 0.2
0
Zinc (Zn), % 0 to 0.2
0.5 to 1.5
Residuals, % 0
0 to 0.3