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6025 Aluminum vs. AZ31C Magnesium

6025 aluminum belongs to the aluminum alloys classification, while AZ31C magnesium belongs to the magnesium alloys.

For each property being compared, the top bar is 6025 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, % 2.8 to 10
12
Fatigue Strength, MPa 67 to 110
150
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
17
Shear Strength, MPa 110 to 140
130
Tensile Strength: Ultimate (UTS), MPa 190 to 240
260
Tensile Strength: Yield (Proof), MPa 68 to 210
200

Thermal Properties

Latent Heat of Fusion, J/g 410
350
Maximum Temperature: Mechanical, °C 160
110
Melting Completion (Liquidus), °C 650
600
Melting Onset (Solidus), °C 550
550
Specific Heat Capacity, J/kg-K 900
990
Thermal Conductivity, W/m-K 130
130
Thermal Expansion, µm/m-K 23
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33
19
Electrical Conductivity: Equal Weight (Specific), % IACS 110
98

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
12
Density, g/cm3 2.8
1.7
Embodied Carbon, kg CO2/kg material 8.5
23
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1160
970

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.0 to 15
28
Resilience: Unit (Modulus of Resilience), kJ/m3 33 to 310
440
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 50
70
Strength to Weight: Axial, points 19 to 24
42
Strength to Weight: Bending, points 26 to 31
53
Thermal Diffusivity, mm2/s 54
74
Thermal Shock Resistance, points 8.2 to 10
16

Alloy Composition

Aluminum (Al), % 91.7 to 96.3
2.4 to 3.6
Chromium (Cr), % 0 to 0.2
0
Copper (Cu), % 0.2 to 0.7
0 to 0.1
Iron (Fe), % 0 to 0.7
0
Magnesium (Mg), % 2.1 to 3.0
93.4 to 97
Manganese (Mn), % 0.6 to 1.4
0.15 to 1.0
Nickel (Ni), % 0
0 to 0.030
Silicon (Si), % 0.8 to 1.5
0 to 0.1
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0 to 0.5
0.5 to 1.5
Residuals, % 0
0 to 0.3