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EN-MC95310 Magnesium vs. SAE-AISI A3 Steel

EN-MC95310 magnesium belongs to the magnesium alloys classification, while SAE-AISI A3 steel belongs to the iron alloys. There are 23 material properties with values for both materials. Properties with values for just one material (9, 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-MC95310 magnesium and the bottom bar is SAE-AISI A3 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
73
Tensile Strength: Ultimate (UTS), MPa 280
700 to 2150

Thermal Properties

Latent Heat of Fusion, J/g 330
260
Melting Completion (Liquidus), °C 650
1450
Melting Onset (Solidus), °C 540
1410
Specific Heat Capacity, J/kg-K 960
470
Thermal Conductivity, W/m-K 51
37
Thermal Expansion, µm/m-K 25
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
8.3
Electrical Conductivity: Equal Weight (Specific), % IACS 50
9.7

Otherwise Unclassified Properties

Base Metal Price, % relative 34
6.0
Density, g/cm3 1.9
7.8
Embodied Carbon, kg CO2/kg material 29
4.4
Embodied Energy, MJ/kg 260
67
Embodied Water, L/kg 900
78

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 61
25
Strength to Weight: Axial, points 40
25 to 77
Strength to Weight: Bending, points 49
23 to 48
Thermal Diffusivity, mm2/s 28
10
Thermal Shock Resistance, points 18
23 to 70

Alloy Composition


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Carbon (C), % 0
1.2 to 1.3
Chromium (Cr), % 0
4.8 to 5.5
Copper (Cu), % 0 to 0.030
0 to 0.25
Iron (Fe), % 0 to 0.010
88.7 to 92
Lithium (Li), % 0 to 0.2
0
Magnesium (Mg), % 88.9 to 93.4
0
Manganese (Mn), % 0 to 0.15
0.4 to 0.6
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
Unspecified Rare Earths, % 1.5 to 4.0
0
Vanadium (V), % 0
0.8 to 1.4
Yttrium (Y), % 4.8 to 5.5
0
Zinc (Zn), % 0 to 0.2
0
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.010
0