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SAE-AISI M52 Steel vs. ZK51A Magnesium

SAE-AISI M52 steel belongs to the iron alloys classification, while ZK51A magnesium belongs to the magnesium 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 SAE-AISI M52 steel and the bottom bar is ZK51A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
45
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 75
18
Tensile Strength: Ultimate (UTS), MPa 710 to 2280
240

Thermal Properties

Latent Heat of Fusion, J/g 260
340
Melting Completion (Liquidus), °C 1510
640
Melting Onset (Solidus), °C 1470
550
Specific Heat Capacity, J/kg-K 460
970
Thermal Conductivity, W/m-K 31
110
Thermal Expansion, µm/m-K 13
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.9
28
Electrical Conductivity: Equal Weight (Specific), % IACS 10
140

Otherwise Unclassified Properties

Base Metal Price, % relative 12
13
Density, g/cm3 7.9
1.8
Embodied Carbon, kg CO2/kg material 7.5
24
Embodied Energy, MJ/kg 110
160
Embodied Water, L/kg 89
940

Common Calculations

Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
64
Strength to Weight: Axial, points 25 to 80
36
Strength to Weight: Bending, points 22 to 49
47
Thermal Diffusivity, mm2/s 8.4
61
Thermal Shock Resistance, points 21 to 67
15

Alloy Composition

Carbon (C), % 0.85 to 1.0
0
Chromium (Cr), % 3.5 to 4.3
0
Copper (Cu), % 0 to 0.25
0 to 0.1
Iron (Fe), % 84.4 to 88.9
0
Magnesium (Mg), % 0
93.1 to 95.9
Manganese (Mn), % 0.15 to 0.45
0
Molybdenum (Mo), % 4.0 to 4.9
0
Nickel (Ni), % 0 to 0.3
0 to 0.010
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0.2 to 0.6
0
Sulfur (S), % 0 to 0.030
0
Tungsten (W), % 0.75 to 1.5
0
Vanadium (V), % 1.7 to 2.3
0
Zinc (Zn), % 0
3.6 to 5.5
Zirconium (Zr), % 0
0.5 to 1.0
Residuals, % 0
0 to 0.3