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EN-MC35110 Magnesium vs. SAE-AISI A7 Steel

EN-MC35110 magnesium belongs to the magnesium alloys classification, while SAE-AISI A7 steel belongs to the iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (11, 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-MC35110 magnesium and the bottom bar is SAE-AISI A7 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 18
72
Tensile Strength: Ultimate (UTS), MPa 230
800 to 2150

Thermal Properties

Latent Heat of Fusion, J/g 330
260
Melting Completion (Liquidus), °C 600
1470
Melting Onset (Solidus), °C 520
1430
Specific Heat Capacity, J/kg-K 970
470
Thermal Conductivity, W/m-K 110
37
Thermal Expansion, µm/m-K 26
12

Otherwise Unclassified Properties

Base Metal Price, % relative 18
10
Density, g/cm3 1.9
7.7
Embodied Carbon, kg CO2/kg material 24
13
Embodied Energy, MJ/kg 170
200
Embodied Water, L/kg 940
100

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 63
25
Strength to Weight: Axial, points 34
29 to 77
Strength to Weight: Bending, points 44
25 to 48
Thermal Diffusivity, mm2/s 61
10
Thermal Shock Resistance, points 14
27 to 72

Alloy Composition

Carbon (C), % 0
2.0 to 2.9
Chromium (Cr), % 0
5.0 to 5.8
Copper (Cu), % 0 to 0.030
0 to 0.25
Iron (Fe), % 0 to 0.010
81.4 to 87.7
Magnesium (Mg), % 92 to 95.4
0
Manganese (Mn), % 0 to 0.15
0 to 0.8
Molybdenum (Mo), % 0
0.9 to 1.4
Nickel (Ni), % 0 to 0.0050
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.010
0 to 0.5
Sulfur (S), % 0
0 to 0.030
Tungsten (W), % 0
0.5 to 1.5
Unspecified Rare Earths, % 0.75 to 1.8
0
Vanadium (V), % 0
3.9 to 5.2
Zinc (Zn), % 3.5 to 5.0
0
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.010
0