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2017A Aluminum vs. AZ31C Magnesium

2017A aluminum belongs to the aluminum alloys classification, while AZ31C magnesium belongs to the magnesium alloys.

For each property being compared, the top bar is 2017A 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, % 2.2 to 14
12
Fatigue Strength, MPa 92 to 130
150
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
17
Shear Strength, MPa 120 to 270
130
Tensile Strength: Ultimate (UTS), MPa 200 to 460
260
Tensile Strength: Yield (Proof), MPa 110 to 290
200

Thermal Properties

Latent Heat of Fusion, J/g 390
350
Maximum Temperature: Mechanical, °C 220
110
Melting Completion (Liquidus), °C 650
600
Melting Onset (Solidus), °C 510
550
Specific Heat Capacity, J/kg-K 880
990
Thermal Conductivity, W/m-K 150
130
Thermal Expansion, µm/m-K 23
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 34
19
Electrical Conductivity: Equal Weight (Specific), % IACS 100
98

Otherwise Unclassified Properties

Base Metal Price, % relative 11
12
Density, g/cm3 3.0
1.7
Embodied Carbon, kg CO2/kg material 8.2
23
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1140
970

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.7 to 53
28
Resilience: Unit (Modulus of Resilience), kJ/m3 90 to 570
440
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 46
70
Strength to Weight: Axial, points 19 to 42
42
Strength to Weight: Bending, points 26 to 44
53
Thermal Diffusivity, mm2/s 56
74
Thermal Shock Resistance, points 8.9 to 20
16

Alloy Composition

Aluminum (Al), % 91.3 to 95.5
2.4 to 3.6
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 3.5 to 4.5
0 to 0.1
Iron (Fe), % 0 to 0.7
0
Magnesium (Mg), % 0.4 to 1.0
93.4 to 97
Manganese (Mn), % 0.4 to 1.0
0.15 to 1.0
Nickel (Ni), % 0
0 to 0.030
Silicon (Si), % 0.2 to 0.8
0 to 0.1
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 0.25
0.5 to 1.5
Zirconium (Zr), % 0 to 0.25
0
Residuals, % 0
0 to 0.3