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AWS E209 vs. EN-MC65120 Magnesium

AWS E209 belongs to the iron alloys classification, while EN-MC65120 magnesium belongs to the magnesium 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 AWS E209 and the bottom bar is EN-MC65120 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
45
Elongation at Break, % 17
3.1
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 79
17
Tensile Strength: Ultimate (UTS), MPa 770
160

Thermal Properties

Latent Heat of Fusion, J/g 300
330
Melting Completion (Liquidus), °C 1420
590
Melting Onset (Solidus), °C 1370
520
Specific Heat Capacity, J/kg-K 480
970
Thermal Expansion, µm/m-K 14
26

Otherwise Unclassified Properties

Base Metal Price, % relative 21
25
Density, g/cm3 7.8
1.9
Embodied Carbon, kg CO2/kg material 4.4
25
Embodied Energy, MJ/kg 63
190
Embodied Water, L/kg 180
930

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
62
Strength to Weight: Axial, points 28
23
Strength to Weight: Bending, points 24
34
Thermal Shock Resistance, points 19
9.8

Alloy Composition

Carbon (C), % 0 to 0.060
0
Chromium (Cr), % 20.5 to 24
0
Copper (Cu), % 0 to 0.75
0 to 0.030
Iron (Fe), % 51.5 to 64.3
0 to 0.010
Magnesium (Mg), % 0
91.8 to 95.1
Manganese (Mn), % 4.0 to 7.0
0 to 0.15
Molybdenum (Mo), % 1.5 to 3.0
0
Nickel (Ni), % 9.5 to 12
0 to 0.0050
Nitrogen (N), % 0.1 to 0.3
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0 to 0.010
Sulfur (S), % 0 to 0.030
0
Unspecified Rare Earths, % 0
2.5 to 4.0
Vanadium (V), % 0.1 to 0.3
0
Zinc (Zn), % 0
2.0 to 3.0
Zirconium (Zr), % 0
0.4 to 1.0
Residuals, % 0
0 to 0.010