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WE43B Magnesium vs. AWS ER90S-B9

WE43B magnesium belongs to the magnesium alloys classification, while AWS ER90S-B9 belongs to the iron alloys. There are 27 material properties with values for both materials. Properties with values for just one material (5, 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 WE43B magnesium and the bottom bar is AWS ER90S-B9.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
190
Elongation at Break, % 2.2
18
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
75
Tensile Strength: Ultimate (UTS), MPa 250
690
Tensile Strength: Yield (Proof), MPa 200
470

Thermal Properties

Latent Heat of Fusion, J/g 330
270
Melting Completion (Liquidus), °C 640
1450
Melting Onset (Solidus), °C 550
1410
Specific Heat Capacity, J/kg-K 960
470
Thermal Conductivity, W/m-K 51
25
Thermal Expansion, µm/m-K 27
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 53
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 34
7.0
Density, g/cm3 1.9
7.8
Embodied Carbon, kg CO2/kg material 28
2.6
Embodied Energy, MJ/kg 250
37
Embodied Water, L/kg 910
91

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.2
110
Resilience: Unit (Modulus of Resilience), kJ/m3 430
570
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 61
25
Strength to Weight: Axial, points 36
25
Strength to Weight: Bending, points 46
22
Thermal Diffusivity, mm2/s 28
6.9
Thermal Shock Resistance, points 15
19

Alloy Composition


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Aluminum (Al), % 0
0 to 0.040
Carbon (C), % 0
0.070 to 0.13
Chromium (Cr), % 0
8.0 to 10.5
Copper (Cu), % 0 to 0.020
0 to 0.2
Iron (Fe), % 0 to 0.010
84.4 to 90.7
Lithium (Li), % 0 to 0.2
0
Magnesium (Mg), % 89.8 to 93.5
0
Manganese (Mn), % 0 to 0.030
0 to 1.2
Molybdenum (Mo), % 0
0.85 to 1.2
Nickel (Ni), % 0 to 0.0050
0 to 0.8
Niobium (Nb), % 0
0.020 to 0.1
Nitrogen (N), % 0
0.030 to 0.070
Phosphorus (P), % 0
0 to 0.010
Silicon (Si), % 0
0.15 to 0.5
Sulfur (S), % 0
0 to 0.010
Unspecified Rare Earths, % 2.4 to 4.4
0
Vanadium (V), % 0
0.15 to 0.3
Yttrium (Y), % 3.7 to 4.3
0
Zinc (Zn), % 0 to 0.2
0
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0
0 to 0.5