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ZC63A Magnesium vs. SAE-AISI A3 Steel

ZC63A magnesium belongs to the magnesium alloys classification, while SAE-AISI A3 steel belongs to the iron alloys. There are 23 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 ZC63A magnesium and the bottom bar is SAE-AISI A3 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 48
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 19
73
Tensile Strength: Ultimate (UTS), MPa 220
700 to 2150

Thermal Properties

Latent Heat of Fusion, J/g 330
260
Melting Completion (Liquidus), °C 550
1450
Melting Onset (Solidus), °C 470
1410
Specific Heat Capacity, J/kg-K 950
470
Thermal Conductivity, W/m-K 120
37
Thermal Expansion, µm/m-K 26
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
8.3
Electrical Conductivity: Equal Weight (Specific), % IACS 140
9.7

Otherwise Unclassified Properties

Base Metal Price, % relative 13
6.0
Density, g/cm3 2.1
7.8
Embodied Carbon, kg CO2/kg material 22
4.4
Embodied Energy, MJ/kg 150
67
Embodied Water, L/kg 920
78

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 58
25
Strength to Weight: Axial, points 29
25 to 77
Strength to Weight: Bending, points 38
23 to 48
Thermal Diffusivity, mm2/s 58
10
Thermal Shock Resistance, points 12
23 to 70

Alloy Composition


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Carbon (C), % 0
1.2 to 1.3
Chromium (Cr), % 0
4.8 to 5.5
Copper (Cu), % 2.4 to 3.0
0 to 0.25
Iron (Fe), % 0
88.7 to 92
Magnesium (Mg), % 89.2 to 91.9
0
Manganese (Mn), % 0.25 to 0.75
0.4 to 0.6
Molybdenum (Mo), % 0
0.9 to 1.4
Nickel (Ni), % 0 to 0.010
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.2
0 to 0.5
Sulfur (S), % 0
0 to 0.030
Vanadium (V), % 0
0.8 to 1.4
Zinc (Zn), % 5.5 to 6.5
0
Residuals, % 0 to 0.3
0