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EN-MC32110 Magnesium vs. SAE-AISI P3 Steel

EN-MC32110 magnesium belongs to the magnesium alloys classification, while SAE-AISI P3 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 EN-MC32110 magnesium and the bottom bar is SAE-AISI P3 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 49
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 19
73
Tensile Strength: Ultimate (UTS), MPa 220
410 to 1980

Thermal Properties

Latent Heat of Fusion, J/g 330
250
Melting Completion (Liquidus), °C 600
1460
Melting Onset (Solidus), °C 500
1420
Specific Heat Capacity, J/kg-K 950
470
Thermal Conductivity, W/m-K 120
46
Thermal Expansion, µm/m-K 26
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 140
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 13
2.8
Density, g/cm3 2.1
7.9
Embodied Carbon, kg CO2/kg material 22
1.5
Embodied Energy, MJ/kg 150
20
Embodied Water, L/kg 920
50

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 58
24
Strength to Weight: Axial, points 29
15 to 70
Strength to Weight: Bending, points 38
16 to 44
Thermal Diffusivity, mm2/s 58
12
Thermal Shock Resistance, points 12
14 to 65

Alloy Composition


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Aluminum (Al), % 0 to 0.2
0
Carbon (C), % 0
0 to 0.1
Chromium (Cr), % 0
0.4 to 0.75
Copper (Cu), % 2.4 to 3.0
0 to 0.25
Iron (Fe), % 0 to 0.050
96.3 to 98.4
Magnesium (Mg), % 89.3 to 91.9
0
Manganese (Mn), % 0.25 to 0.75
0.2 to 0.6
Nickel (Ni), % 0 to 0.010
1.0 to 1.5
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.2
0 to 0.4
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 5.5 to 6.5
0
Residuals, % 0 to 0.010
0