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EN-MC95310 Magnesium vs. SAE-AISI A8 Steel

EN-MC95310 magnesium belongs to the magnesium alloys classification, while SAE-AISI A8 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 A8 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
74
Tensile Strength: Ultimate (UTS), MPa 280
700 to 1920

Thermal Properties

Latent Heat of Fusion, J/g 330
270
Melting Completion (Liquidus), °C 650
1480
Melting Onset (Solidus), °C 540
1430
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
9.5

Otherwise Unclassified Properties

Base Metal Price, % relative 34
8.5
Density, g/cm3 1.9
7.9
Embodied Carbon, kg CO2/kg material 29
2.3
Embodied Energy, MJ/kg 260
31
Embodied Water, L/kg 900
73

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 61
24
Strength to Weight: Axial, points 40
25 to 68
Strength to Weight: Bending, points 49
22 to 44
Thermal Diffusivity, mm2/s 28
9.9
Thermal Shock Resistance, points 18
22 to 62

Alloy Composition

Carbon (C), % 0
0.5 to 0.6
Chromium (Cr), % 0
4.8 to 5.5
Copper (Cu), % 0 to 0.030
0 to 0.25
Iron (Fe), % 0 to 0.010
88.5 to 91.9
Lithium (Li), % 0 to 0.2
0
Magnesium (Mg), % 88.9 to 93.4
0
Manganese (Mn), % 0 to 0.15
0 to 0.5
Molybdenum (Mo), % 0
1.2 to 1.7
Nickel (Ni), % 0 to 0.0050
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.010
0.75 to 1.1
Sulfur (S), % 0
0 to 0.030
Tungsten (W), % 0
1.0 to 1.5
Unspecified Rare Earths, % 1.5 to 4.0
0
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