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6151 Aluminum vs. ISO-WD32250 Magnesium

6151 aluminum belongs to the aluminum alloys classification, while ISO-WD32250 magnesium belongs to the magnesium alloys.

For each property being compared, the top bar is 6151 aluminum and the bottom bar is ISO-WD32250 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
45
Elongation at Break, % 1.1 to 5.7
4.5 to 8.6
Fatigue Strength, MPa 80 to 100
170 to 210
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
17
Shear Strength, MPa 190 to 200
180 to 190
Tensile Strength: Ultimate (UTS), MPa 330 to 340
310 to 330
Tensile Strength: Yield (Proof), MPa 270 to 280
240 to 290

Thermal Properties

Latent Heat of Fusion, J/g 410
340
Maximum Temperature: Mechanical, °C 170
120
Melting Completion (Liquidus), °C 650
600
Melting Onset (Solidus), °C 590
550
Specific Heat Capacity, J/kg-K 900
980
Thermal Conductivity, W/m-K 170
130
Thermal Expansion, µm/m-K 23
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 45
25
Electrical Conductivity: Equal Weight (Specific), % IACS 150
130

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
13
Density, g/cm3 2.7
1.8
Embodied Carbon, kg CO2/kg material 8.2
24
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1180
950

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.5 to 18
14 to 26
Resilience: Unit (Modulus of Resilience), kJ/m3 520 to 580
630 to 930
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
67
Strength to Weight: Axial, points 34
49 to 51
Strength to Weight: Bending, points 39
58 to 60
Thermal Diffusivity, mm2/s 70
72
Thermal Shock Resistance, points 15
19 to 20

Alloy Composition

Aluminum (Al), % 95.6 to 98.8
0
Chromium (Cr), % 0.15 to 0.35
0
Copper (Cu), % 0 to 0.35
0
Iron (Fe), % 0 to 1.0
0
Magnesium (Mg), % 0.45 to 0.8
94.9 to 97.1
Manganese (Mn), % 0 to 0.2
0
Silicon (Si), % 0.6 to 1.2
0
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 0 to 0.25
2.5 to 4.0
Zirconium (Zr), % 0
0.45 to 0.8
Residuals, % 0
0 to 0.3