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EN-MC65210 Magnesium vs. AWS ER90S-B3

EN-MC65210 magnesium belongs to the magnesium alloys classification, while AWS ER90S-B3 belongs to the iron alloys. There are 25 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-MC65210 magnesium and the bottom bar is AWS ER90S-B3.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
190
Elongation at Break, % 2.8
19
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 17
73
Tensile Strength: Ultimate (UTS), MPa 270
690
Tensile Strength: Yield (Proof), MPa 200
620

Thermal Properties

Latent Heat of Fusion, J/g 340
260
Melting Completion (Liquidus), °C 610
1460
Melting Onset (Solidus), °C 540
1420
Specific Heat Capacity, J/kg-K 970
470
Thermal Conductivity, W/m-K 110
40
Thermal Expansion, µm/m-K 26
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
7.7
Electrical Conductivity: Equal Weight (Specific), % IACS 110
8.9

Otherwise Unclassified Properties

Density, g/cm3 2.0
7.8
Embodied Carbon, kg CO2/kg material 27
1.8
Embodied Energy, MJ/kg 220
24

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.9
130
Resilience: Unit (Modulus of Resilience), kJ/m3 450
1000
Stiffness to Weight: Axial, points 12
13
Stiffness to Weight: Bending, points 59
24
Strength to Weight: Axial, points 38
25
Strength to Weight: Bending, points 47
22
Thermal Diffusivity, mm2/s 58
11
Thermal Shock Resistance, points 17
20

Alloy Composition


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Carbon (C), % 0
0.070 to 0.12
Chromium (Cr), % 0
2.3 to 2.7
Copper (Cu), % 0 to 0.030
0 to 0.35
Iron (Fe), % 0 to 0.010
93.5 to 95.9
Magnesium (Mg), % 92.6 to 95.6
0
Manganese (Mn), % 0 to 0.15
0.4 to 0.7
Molybdenum (Mo), % 0
0.9 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
0.4 to 0.7
Silver (Ag), % 2.0 to 3.0
0
Sulfur (S), % 0
0 to 0.025
Unspecified Rare Earths, % 2.0 to 3.0
0
Zinc (Zn), % 0 to 0.2
0
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.010
0 to 0.5