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AWS E309Nb vs. ISO-WD32260 Magnesium

AWS E309Nb belongs to the iron alloys classification, while ISO-WD32260 magnesium belongs to the magnesium alloys. There are 24 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 AWS E309Nb and the bottom bar is ISO-WD32260 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
46
Elongation at Break, % 34
4.5 to 6.0
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
18
Tensile Strength: Ultimate (UTS), MPa 620
330 to 340

Thermal Properties

Latent Heat of Fusion, J/g 300
330
Melting Completion (Liquidus), °C 1420
600
Melting Onset (Solidus), °C 1380
520
Specific Heat Capacity, J/kg-K 480
970
Thermal Conductivity, W/m-K 15
110
Thermal Expansion, µm/m-K 14
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
28
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
140

Otherwise Unclassified Properties

Base Metal Price, % relative 25
13
Density, g/cm3 7.8
1.9
Embodied Carbon, kg CO2/kg material 4.4
23
Embodied Energy, MJ/kg 64
160
Embodied Water, L/kg 180
940

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
63
Strength to Weight: Axial, points 22
48 to 51
Strength to Weight: Bending, points 21
56 to 58
Thermal Diffusivity, mm2/s 4.0
63
Thermal Shock Resistance, points 16
19 to 20

Alloy Composition

Carbon (C), % 0 to 0.12
0
Chromium (Cr), % 22 to 25
0
Copper (Cu), % 0 to 0.75
0
Iron (Fe), % 54.8 to 64.8
0
Magnesium (Mg), % 0
92.7 to 94.8
Manganese (Mn), % 0.5 to 2.5
0
Molybdenum (Mo), % 0 to 0.75
0
Nickel (Ni), % 12 to 14
0
Niobium (Nb), % 0.7 to 1.0
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.030
0
Zinc (Zn), % 0
4.8 to 6.2
Zirconium (Zr), % 0
0.45 to 0.8
Residuals, % 0
0 to 0.3