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EN-MC65220 Magnesium vs. AWS E80C-B8

EN-MC65220 magnesium belongs to the magnesium alloys classification, while AWS E80C-B8 belongs to the iron alloys. There are 26 material properties with values for both materials. Properties with values for just one material (6, 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-MC65220 magnesium and the bottom bar is AWS E80C-B8.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
190
Elongation at Break, % 2.2
19
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
75
Tensile Strength: Ultimate (UTS), MPa 270
620
Tensile Strength: Yield (Proof), MPa 200
540

Thermal Properties

Latent Heat of Fusion, J/g 340
270
Melting Completion (Liquidus), °C 610
1450
Melting Onset (Solidus), °C 550
1410
Specific Heat Capacity, J/kg-K 980
470
Thermal Conductivity, W/m-K 110
25
Thermal Expansion, µm/m-K 26
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
9.1
Electrical Conductivity: Equal Weight (Specific), % IACS 120
11

Otherwise Unclassified Properties

Base Metal Price, % relative 80
6.5
Density, g/cm3 1.9
7.8
Embodied Carbon, kg CO2/kg material 27
2.1
Embodied Energy, MJ/kg 210
28

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.5
110
Resilience: Unit (Modulus of Resilience), kJ/m3 450
740
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 62
25
Strength to Weight: Axial, points 40
22
Strength to Weight: Bending, points 49
21
Thermal Diffusivity, mm2/s 61
6.9
Thermal Shock Resistance, points 17
17

Alloy Composition


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Carbon (C), % 0
0 to 0.1
Chromium (Cr), % 0
8.0 to 10.5
Copper (Cu), % 0.050 to 0.1
0 to 0.35
Iron (Fe), % 0 to 0.010
85.5 to 90.6
Magnesium (Mg), % 93.8 to 96.8
0
Manganese (Mn), % 0 to 0.15
0.4 to 1.0
Molybdenum (Mo), % 0
0.8 to 1.2
Nickel (Ni), % 0 to 0.0050
0 to 0.2
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 0.010
0.25 to 0.6
Silver (Ag), % 1.3 to 1.7
0
Sulfur (S), % 0
0 to 0.025
Unspecified Rare Earths, % 1.5 to 3.0
0
Vanadium (V), % 0
0 to 0.030
Zinc (Zn), % 0 to 0.2
0
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.010
0 to 0.5