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EN-MC21210 Magnesium vs. SAE-AISI H23 Steel

EN-MC21210 magnesium belongs to the magnesium alloys classification, while SAE-AISI H23 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-MC21210 magnesium and the bottom bar is SAE-AISI H23 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
80
Tensile Strength: Ultimate (UTS), MPa 190
760 to 1550

Thermal Properties

Latent Heat of Fusion, J/g 350
260
Melting Completion (Liquidus), °C 600
1680
Melting Onset (Solidus), °C 570
1630
Specific Heat Capacity, J/kg-K 1000
440
Thermal Conductivity, W/m-K 120
20
Thermal Expansion, µm/m-K 27
12

Otherwise Unclassified Properties

Base Metal Price, % relative 12
34
Density, g/cm3 1.6
8.7
Embodied Carbon, kg CO2/kg material 24
6.9
Embodied Energy, MJ/kg 160
110
Embodied Water, L/kg 980
120

Common Calculations

Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 72
22
Strength to Weight: Axial, points 32
24 to 49
Strength to Weight: Bending, points 44
21 to 34
Thermal Diffusivity, mm2/s 76
5.2
Thermal Shock Resistance, points 11
23 to 47

Alloy Composition


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Aluminum (Al), % 1.6 to 2.6
0
Carbon (C), % 0
0.25 to 0.35
Chromium (Cr), % 0
11 to 12.8
Copper (Cu), % 0 to 0.010
0 to 0.25
Iron (Fe), % 0 to 0.0050
71.3 to 76.7
Magnesium (Mg), % 96.3 to 98.3
0
Manganese (Mn), % 0.1 to 0.7
0.15 to 0.4
Nickel (Ni), % 0 to 0.0020
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.1
0.15 to 0.6
Sulfur (S), % 0
0 to 0.030
Tungsten (W), % 0
11 to 12.8
Vanadium (V), % 0
0.75 to 1.3
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.010
0