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EN-MC65220 Magnesium vs. SAE-AISI H14 Steel

EN-MC65220 magnesium belongs to the magnesium alloys classification, while SAE-AISI H14 steel belongs to the iron alloys. There are 22 material properties with values for both materials. Properties with values for just one material (10, 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-MC65220 magnesium and the bottom bar is SAE-AISI H14 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 17
75
Tensile Strength: Ultimate (UTS), MPa 270
710 to 2030

Thermal Properties

Latent Heat of Fusion, J/g 340
270
Melting Completion (Liquidus), °C 610
1530
Melting Onset (Solidus), °C 550
1490
Specific Heat Capacity, J/kg-K 980
460
Thermal Conductivity, W/m-K 110
35
Thermal Expansion, µm/m-K 26
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
9.3
Electrical Conductivity: Equal Weight (Specific), % IACS 120
10

Otherwise Unclassified Properties

Base Metal Price, % relative 80
15
Density, g/cm3 1.9
8.1
Embodied Carbon, kg CO2/kg material 27
2.7
Embodied Energy, MJ/kg 210
39

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 62
24
Strength to Weight: Axial, points 40
24 to 69
Strength to Weight: Bending, points 49
22 to 44
Thermal Diffusivity, mm2/s 61
9.3
Thermal Shock Resistance, points 17
24 to 68

Alloy Composition

Carbon (C), % 0
0.35 to 0.45
Chromium (Cr), % 0
4.8 to 5.5
Copper (Cu), % 0.050 to 0.1
0 to 0.25
Iron (Fe), % 0 to 0.010
86.5 to 89.9
Magnesium (Mg), % 93.8 to 96.8
0
Manganese (Mn), % 0 to 0.15
0.2 to 0.5
Nickel (Ni), % 0 to 0.0050
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.010
0.8 to 1.2
Silver (Ag), % 1.3 to 1.7
0
Sulfur (S), % 0
0 to 0.030
Tungsten (W), % 0
4.0 to 5.3
Unspecified Rare Earths, % 1.5 to 3.0
0
Zinc (Zn), % 0 to 0.2
0
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.010
0