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Grade VDC Steel vs. QE22A Magnesium

Grade VDC steel belongs to the iron alloys classification, while QE22A magnesium belongs to the magnesium alloys. There are 23 material properties with values for both materials. Properties with values for just one material (12, 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 grade VDC steel and the bottom bar is QE22A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 510
80
Elastic (Young's, Tensile) Modulus, GPa 190
44
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 80
17
Tensile Strength: Ultimate (UTS), MPa 1700
250

Thermal Properties

Latent Heat of Fusion, J/g 250
340
Maximum Temperature: Mechanical, °C 400
250
Melting Completion (Liquidus), °C 1450
640
Melting Onset (Solidus), °C 1410
570
Specific Heat Capacity, J/kg-K 470
970
Thermal Conductivity, W/m-K 51
110
Thermal Expansion, µm/m-K 13
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
25
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
120

Otherwise Unclassified Properties

Density, g/cm3 7.8
2.0
Embodied Carbon, kg CO2/kg material 1.4
27
Embodied Energy, MJ/kg 19
220

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
60
Strength to Weight: Axial, points 60
36
Strength to Weight: Bending, points 40
46
Thermal Diffusivity, mm2/s 14
59
Thermal Shock Resistance, points 50
15

Alloy Composition

Carbon (C), % 0.6 to 0.75
0
Chromium (Cr), % 0 to 0.3
0
Copper (Cu), % 0 to 0.060
0 to 0.1
Iron (Fe), % 98.3 to 99.35
0
Magnesium (Mg), % 0
93.1 to 95.8
Manganese (Mn), % 0.5 to 1.0
0
Nickel (Ni), % 0
0 to 0.010
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0.15 to 0.3
0
Silver (Ag), % 0
2.0 to 3.0
Sulfur (S), % 0 to 0.020
0
Unspecified Rare Earths, % 0
1.8 to 2.5
Zirconium (Zr), % 0
0.4 to 1.0
Residuals, % 0
0 to 0.3