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AS41B Magnesium vs. Grade FDCrV Steel

AS41B magnesium belongs to the magnesium alloys classification, while grade FDCrV 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 AS41B magnesium and the bottom bar is grade FDCrV 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 18
80
Tensile Strength: Ultimate (UTS), MPa 210
1800

Thermal Properties

Latent Heat of Fusion, J/g 370
250
Maximum Temperature: Mechanical, °C 110
410
Melting Completion (Liquidus), °C 620
1450
Melting Onset (Solidus), °C 570
1410
Specific Heat Capacity, J/kg-K 1000
470
Thermal Conductivity, W/m-K 68
48
Thermal Expansion, µm/m-K 26
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 92
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 12
2.1
Density, g/cm3 1.7
7.8
Embodied Carbon, kg CO2/kg material 23
1.9
Embodied Energy, MJ/kg 160
26
Embodied Water, L/kg 980
49

Common Calculations

Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 72
24
Strength to Weight: Axial, points 35
64
Strength to Weight: Bending, points 47
42
Thermal Diffusivity, mm2/s 41
13
Thermal Shock Resistance, points 13
53

Alloy Composition

Aluminum (Al), % 3.5 to 5.0
0
Carbon (C), % 0
0.62 to 0.72
Chromium (Cr), % 0
0.4 to 0.6
Copper (Cu), % 0 to 0.020
0 to 0.12
Iron (Fe), % 0 to 0.0035
97.8 to 98.8
Magnesium (Mg), % 92.7 to 95.7
0
Manganese (Mn), % 0.35 to 0.7
0.5 to 0.9
Nickel (Ni), % 0 to 0.0020
0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0.5 to 1.5
0.15 to 0.3
Sulfur (S), % 0
0 to 0.025
Vanadium (V), % 0
0.15 to 0.25
Zinc (Zn), % 0 to 0.12
0