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ZK40A Magnesium vs. Grade TDSiCrV Steel

ZK40A magnesium belongs to the magnesium alloys classification, while grade TDSiCrV steel belongs to the iron alloys. There are 24 material properties with values for both materials. Properties with values for just one material (8, 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 ZK40A magnesium and the bottom bar is grade TDSiCrV steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 17
80
Tensile Strength: Ultimate (UTS), MPa 280
2100

Thermal Properties

Latent Heat of Fusion, J/g 340
270
Maximum Temperature: Mechanical, °C 120
420
Melting Completion (Liquidus), °C 600
1440
Melting Onset (Solidus), °C 540
1400
Specific Heat Capacity, J/kg-K 970
480
Thermal Conductivity, W/m-K 110
47
Thermal Expansion, µm/m-K 26
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 130
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 13
2.3
Density, g/cm3 1.8
7.7
Embodied Carbon, kg CO2/kg material 24
1.9
Embodied Energy, MJ/kg 160
26
Embodied Water, L/kg 950
50

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 65
25
Strength to Weight: Axial, points 43
75
Strength to Weight: Bending, points 53
47
Thermal Diffusivity, mm2/s 62
13
Thermal Shock Resistance, points 17
63

Alloy Composition


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Carbon (C), % 0
0.5 to 0.7
Chromium (Cr), % 0
0.5 to 1.0
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 0
96.1 to 97.8
Magnesium (Mg), % 94.2 to 96.1
0
Manganese (Mn), % 0
0.4 to 0.9
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0
1.2 to 1.7
Sulfur (S), % 0
0 to 0.020
Vanadium (V), % 0
0.1 to 0.25
Zinc (Zn), % 3.5 to 4.5
0
Zirconium (Zr), % 0.45 to 1.0
0
Residuals, % 0 to 0.3
0