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EN-MC35110 Magnesium vs. SAE-AISI D7 Steel

EN-MC35110 magnesium belongs to the magnesium alloys classification, while SAE-AISI D7 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 D7 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
190
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 18
73
Tensile Strength: Ultimate (UTS), MPa 230
800 to 2120

Thermal Properties

Latent Heat of Fusion, J/g 330
270
Melting Completion (Liquidus), °C 600
1440
Melting Onset (Solidus), °C 520
1400
Specific Heat Capacity, J/kg-K 970
480
Thermal Conductivity, W/m-K 110
27
Thermal Expansion, µm/m-K 26
11

Otherwise Unclassified Properties

Base Metal Price, % relative 18
10
Density, g/cm3 1.9
7.6
Embodied Carbon, kg CO2/kg material 24
11
Embodied Energy, MJ/kg 170
180
Embodied Water, L/kg 940
130

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 63
25
Strength to Weight: Axial, points 34
29 to 78
Strength to Weight: Bending, points 44
25 to 48
Thermal Diffusivity, mm2/s 61
7.4
Thermal Shock Resistance, points 14
27 to 72

Alloy Composition

Carbon (C), % 0
2.2 to 2.5
Chromium (Cr), % 0
11.5 to 13.5
Copper (Cu), % 0 to 0.030
0 to 0.25
Iron (Fe), % 0 to 0.010
76.6 to 81.9
Magnesium (Mg), % 92 to 95.4
0
Manganese (Mn), % 0 to 0.15
0 to 0.6
Molybdenum (Mo), % 0
0.7 to 1.2
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 0.6
Sulfur (S), % 0
0 to 0.030
Unspecified Rare Earths, % 0.75 to 1.8
0
Vanadium (V), % 0
3.8 to 4.4
Zinc (Zn), % 3.5 to 5.0
0
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.010
0