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EN-MC21210 Magnesium vs. AWS E312

EN-MC21210 magnesium belongs to the magnesium alloys classification, while AWS E312 belongs to the iron alloys. There are 20 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 EN-MC21210 magnesium and the bottom bar is AWS E312.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
200
Elongation at Break, % 14
25
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 17
80
Tensile Strength: Ultimate (UTS), MPa 190
740

Thermal Properties

Latent Heat of Fusion, J/g 350
310
Melting Completion (Liquidus), °C 600
1410
Melting Onset (Solidus), °C 570
1360
Specific Heat Capacity, J/kg-K 1000
480
Thermal Expansion, µm/m-K 27
15

Otherwise Unclassified Properties

Base Metal Price, % relative 12
20
Density, g/cm3 1.6
7.7
Embodied Carbon, kg CO2/kg material 24
3.6
Embodied Energy, MJ/kg 160
52
Embodied Water, L/kg 980
200

Common Calculations

Stiffness to Weight: Axial, points 15
15
Stiffness to Weight: Bending, points 72
25
Strength to Weight: Axial, points 32
27
Strength to Weight: Bending, points 44
24
Thermal Shock Resistance, points 11
18

Alloy Composition


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Aluminum (Al), % 1.6 to 2.6
0
Carbon (C), % 0
0 to 0.15
Chromium (Cr), % 0
28 to 32
Copper (Cu), % 0 to 0.010
0 to 0.75
Iron (Fe), % 0 to 0.0050
52.3 to 63.5
Magnesium (Mg), % 96.3 to 98.3
0
Manganese (Mn), % 0.1 to 0.7
0.5 to 2.5
Molybdenum (Mo), % 0
0 to 0.75
Nickel (Ni), % 0 to 0.0020
8.0 to 10.5
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.1
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.010
0