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EN-MC21210 Magnesium vs. ACI-ASTM CG6MMN Steel

EN-MC21210 magnesium belongs to the magnesium alloys classification, while ACI-ASTM CG6MMN steel belongs to the iron alloys. There are 26 material properties with values for both materials. Properties with values for just one material (7, 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 ACI-ASTM CG6MMN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 48
190
Elastic (Young's, Tensile) Modulus, GPa 44
200
Elongation at Break, % 14
34
Fatigue Strength, MPa 70
260
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
79
Tensile Strength: Ultimate (UTS), MPa 190
670
Tensile Strength: Yield (Proof), MPa 90
320

Thermal Properties

Latent Heat of Fusion, J/g 350
300
Maximum Temperature: Mechanical, °C 100
1080
Melting Completion (Liquidus), °C 600
1420
Melting Onset (Solidus), °C 570
1380
Specific Heat Capacity, J/kg-K 1000
480
Thermal Expansion, µm/m-K 27
17

Otherwise Unclassified Properties

Base Metal Price, % relative 12
22
Density, g/cm3 1.6
7.8
Embodied Carbon, kg CO2/kg material 24
4.8
Embodied Energy, MJ/kg 160
68
Embodied Water, L/kg 980
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 22
190
Resilience: Unit (Modulus of Resilience), kJ/m3 92
260
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 72
25
Strength to Weight: Axial, points 32
24
Strength to Weight: Bending, points 44
22
Thermal Shock Resistance, points 11
14

Alloy Composition


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Aluminum (Al), % 1.6 to 2.6
0
Carbon (C), % 0
0 to 0.060
Chromium (Cr), % 0
20.5 to 23.5
Copper (Cu), % 0 to 0.010
0
Iron (Fe), % 0 to 0.0050
51.9 to 62.1
Magnesium (Mg), % 96.3 to 98.3
0
Manganese (Mn), % 0.1 to 0.7
4.0 to 6.0
Molybdenum (Mo), % 0
1.5 to 3.0
Nickel (Ni), % 0 to 0.0020
11.5 to 13.5
Niobium (Nb), % 0
0.1 to 0.3
Nitrogen (N), % 0
0.2 to 0.4
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.1
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Vanadium (V), % 0
0.1 to 0.3
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.010
0