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AM50A Magnesium vs. SAE-AISI H24 Steel

AM50A magnesium belongs to the magnesium alloys classification, while SAE-AISI H24 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 AM50A magnesium and the bottom bar is SAE-AISI H24 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
200
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 17
78
Tensile Strength: Ultimate (UTS), MPa 210
720 to 1990

Thermal Properties

Latent Heat of Fusion, J/g 350
240
Melting Completion (Liquidus), °C 620
1750
Melting Onset (Solidus), °C 570
1700
Specific Heat Capacity, J/kg-K 1000
420
Thermal Conductivity, W/m-K 65
27
Thermal Expansion, µm/m-K 26
12

Otherwise Unclassified Properties

Base Metal Price, % relative 12
37
Density, g/cm3 1.7
9.1
Embodied Carbon, kg CO2/kg material 23
6.1
Embodied Energy, MJ/kg 160
93
Embodied Water, L/kg 990
78

Common Calculations

Stiffness to Weight: Axial, points 15
12
Stiffness to Weight: Bending, points 71
22
Strength to Weight: Axial, points 35
22 to 61
Strength to Weight: Bending, points 47
20 to 39
Thermal Diffusivity, mm2/s 39
6.9
Thermal Shock Resistance, points 13
22 to 61

Alloy Composition

Aluminum (Al), % 4.4 to 5.4
0
Carbon (C), % 0
0.42 to 0.53
Chromium (Cr), % 0
2.5 to 3.5
Copper (Cu), % 0 to 0.010
0 to 0.25
Iron (Fe), % 0 to 0.0040
78 to 82.4
Magnesium (Mg), % 93.7 to 95.3
0
Manganese (Mn), % 0.26 to 0.6
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 0.4
Sulfur (S), % 0
0 to 0.030
Tungsten (W), % 0
14 to 16
Vanadium (V), % 0
0.4 to 0.6
Zinc (Zn), % 0 to 0.22
0