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AZ61A Magnesium vs. AISI W5 Steel

AZ61A magnesium belongs to the magnesium alloys classification, while AISI W5 steel belongs to the iron alloys. There are 23 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is AZ61A magnesium and the bottom bar is AISI W5 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 17
72
Tensile Strength: Ultimate (UTS), MPa 280
600 to 2360

Thermal Properties

Latent Heat of Fusion, J/g 350
250
Melting Completion (Liquidus), °C 600
1450
Melting Onset (Solidus), °C 530
1410
Specific Heat Capacity, J/kg-K 990
470
Thermal Conductivity, W/m-K 79
45
Thermal Expansion, µm/m-K 27
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 12
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 62
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 12
2.3
Density, g/cm3 1.7
7.8
Embodied Carbon, kg CO2/kg material 23
1.6
Embodied Energy, MJ/kg 160
21
Embodied Water, L/kg 980
48

Common Calculations

Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 69
24
Strength to Weight: Axial, points 46
21 to 84
Strength to Weight: Bending, points 56
20 to 50
Thermal Diffusivity, mm2/s 47
12
Thermal Shock Resistance, points 17
20 to 78

Alloy Composition


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Aluminum (Al), % 5.5 to 7.2
0
Carbon (C), % 0
1.1 to 1.2
Chromium (Cr), % 0
0.4 to 0.6
Copper (Cu), % 0 to 0.050
0 to 0.2
Iron (Fe), % 0 to 0.0050
96.6 to 98.4
Magnesium (Mg), % 90.3 to 93.9
0
Manganese (Mn), % 0.15 to 0.5
0.1 to 0.4
Molybdenum (Mo), % 0
0 to 0.1
Nickel (Ni), % 0 to 0.0050
0 to 0.2
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.1
0.1 to 0.4
Sulfur (S), % 0
0 to 0.030
Tungsten (W), % 0
0 to 0.15
Vanadium (V), % 0
0 to 0.1
Zinc (Zn), % 0.4 to 1.5
0
Residuals, % 0 to 0.3
0