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EN-MC21210 Magnesium vs. SAE-AISI 1144 Steel

EN-MC21210 magnesium belongs to the magnesium alloys classification, while SAE-AISI 1144 steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (1, 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 EN-MC21210 magnesium and the bottom bar is SAE-AISI 1144 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 48
220 to 230
Elastic (Young's, Tensile) Modulus, GPa 44
190
Elongation at Break, % 14
11 to 17
Fatigue Strength, MPa 70
280 to 430
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 17
72
Shear Strength, MPa 110
460 to 510
Tensile Strength: Ultimate (UTS), MPa 190
750 to 840
Tensile Strength: Yield (Proof), MPa 90
420 to 690

Thermal Properties

Latent Heat of Fusion, J/g 350
250
Maximum Temperature: Mechanical, °C 100
400
Melting Completion (Liquidus), °C 600
1450
Melting Onset (Solidus), °C 570
1410
Specific Heat Capacity, J/kg-K 1000
470
Thermal Conductivity, W/m-K 120
51
Thermal Expansion, µm/m-K 27
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 24
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 130
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 12
1.9
Density, g/cm3 1.6
7.8
Embodied Carbon, kg CO2/kg material 24
1.4
Embodied Energy, MJ/kg 160
19
Embodied Water, L/kg 980
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 22
91 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 92
480 to 1290
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 72
24
Strength to Weight: Axial, points 32
27 to 30
Strength to Weight: Bending, points 44
23 to 25
Thermal Diffusivity, mm2/s 76
14
Thermal Shock Resistance, points 11
22 to 24

Alloy Composition


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Aluminum (Al), % 1.6 to 2.6
0
Carbon (C), % 0
0.4 to 0.48
Copper (Cu), % 0 to 0.010
0
Iron (Fe), % 0 to 0.0050
97.5 to 98
Magnesium (Mg), % 96.3 to 98.3
0
Manganese (Mn), % 0.1 to 0.7
1.4 to 1.7
Nickel (Ni), % 0 to 0.0020
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.1
0
Sulfur (S), % 0
0.24 to 0.33
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.010
0