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AWS E307 vs. EN-MC21210 Magnesium

AWS E307 belongs to the iron alloys classification, while EN-MC21210 magnesium belongs to the magnesium alloys. There are 24 material properties with values for both materials. Properties with values for just one material (8, 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 E307 and the bottom bar is EN-MC21210 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
44
Elongation at Break, % 34
14
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
17
Tensile Strength: Ultimate (UTS), MPa 660
190

Thermal Properties

Latent Heat of Fusion, J/g 290
350
Melting Completion (Liquidus), °C 1420
600
Melting Onset (Solidus), °C 1370
570
Specific Heat Capacity, J/kg-K 480
1000
Thermal Conductivity, W/m-K 15
120
Thermal Expansion, µm/m-K 14
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
24
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
130

Otherwise Unclassified Properties

Base Metal Price, % relative 17
12
Density, g/cm3 7.8
1.6
Embodied Carbon, kg CO2/kg material 3.5
24
Embodied Energy, MJ/kg 49
160
Embodied Water, L/kg 160
980

Common Calculations

Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
72
Strength to Weight: Axial, points 24
32
Strength to Weight: Bending, points 22
44
Thermal Diffusivity, mm2/s 4.1
76
Thermal Shock Resistance, points 17
11

Alloy Composition

Aluminum (Al), % 0
1.6 to 2.6
Carbon (C), % 0.040 to 0.14
0
Chromium (Cr), % 18 to 21.5
0
Copper (Cu), % 0 to 0.75
0 to 0.010
Iron (Fe), % 59.6 to 69.2
0 to 0.0050
Magnesium (Mg), % 0
96.3 to 98.3
Manganese (Mn), % 3.3 to 4.8
0.1 to 0.7
Molybdenum (Mo), % 0.5 to 1.5
0
Nickel (Ni), % 9.0 to 10.7
0 to 0.0020
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0 to 0.1
Sulfur (S), % 0 to 0.030
0
Zinc (Zn), % 0
0 to 0.2
Residuals, % 0
0 to 0.010