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WE43B Magnesium vs. AWS ER90S-D2

WE43B magnesium belongs to the magnesium alloys classification, while AWS ER90S-D2 belongs to the iron alloys. There are 27 material properties with values for both materials. Properties with values for just one material (4, 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-D2.

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
0.29
Shear Modulus, GPa 17
73
Tensile Strength: Ultimate (UTS), MPa 250
710
Tensile Strength: Yield (Proof), MPa 200
600

Thermal Properties

Latent Heat of Fusion, J/g 330
260
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
47
Thermal Expansion, µm/m-K 27
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 53
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 34
2.6
Density, g/cm3 1.9
7.8
Embodied Carbon, kg CO2/kg material 28
1.6
Embodied Energy, MJ/kg 250
21
Embodied Water, L/kg 910
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.2
130
Resilience: Unit (Modulus of Resilience), kJ/m3 430
980
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 61
24
Strength to Weight: Axial, points 36
25
Strength to Weight: Bending, points 46
23
Thermal Diffusivity, mm2/s 28
13
Thermal Shock Resistance, points 15
21

Alloy Composition


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Carbon (C), % 0
0.070 to 0.12
Copper (Cu), % 0 to 0.020
0 to 0.5
Iron (Fe), % 0 to 0.010
95.2 to 97.4
Lithium (Li), % 0 to 0.2
0
Magnesium (Mg), % 89.8 to 93.5
0
Manganese (Mn), % 0 to 0.030
1.6 to 2.1
Molybdenum (Mo), % 0
0.4 to 0.6
Nickel (Ni), % 0 to 0.0050
0 to 0.15
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0
0.5 to 0.8
Sulfur (S), % 0
0 to 0.025
Unspecified Rare Earths, % 2.4 to 4.4
0
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