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AS41B Magnesium vs. SAE-AISI M10 Steel

AS41B magnesium belongs to the magnesium alloys classification, while SAE-AISI M10 steel belongs to the iron alloys. There are 21 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 AS41B magnesium and the bottom bar is SAE-AISI M10 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
200
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 18
76
Tensile Strength: Ultimate (UTS), MPa 210
740 to 2170

Thermal Properties

Latent Heat of Fusion, J/g 370
270
Melting Completion (Liquidus), °C 620
1520
Melting Onset (Solidus), °C 570
1470
Specific Heat Capacity, J/kg-K 1000
460
Thermal Conductivity, W/m-K 68
31
Thermal Expansion, µm/m-K 26
12

Otherwise Unclassified Properties

Base Metal Price, % relative 12
14
Density, g/cm3 1.7
7.9
Embodied Carbon, kg CO2/kg material 23
8.3
Embodied Energy, MJ/kg 160
120
Embodied Water, L/kg 980
100

Common Calculations

Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 72
24
Strength to Weight: Axial, points 35
26 to 76
Strength to Weight: Bending, points 47
23 to 47
Thermal Diffusivity, mm2/s 41
8.5
Thermal Shock Resistance, points 13
23 to 68

Alloy Composition

Aluminum (Al), % 3.5 to 5.0
0
Carbon (C), % 0
0.84 to 1.1
Chromium (Cr), % 0
3.8 to 4.5
Copper (Cu), % 0 to 0.020
0 to 0.25
Iron (Fe), % 0 to 0.0035
82.3 to 85.6
Magnesium (Mg), % 92.7 to 95.7
0
Manganese (Mn), % 0.35 to 0.7
0.1 to 0.4
Molybdenum (Mo), % 0
7.8 to 8.5
Nickel (Ni), % 0 to 0.0020
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0.5 to 1.5
0.2 to 0.45
Sulfur (S), % 0
0 to 0.030
Vanadium (V), % 0
1.8 to 2.2
Zinc (Zn), % 0 to 0.12
0