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AWS E630 vs. ISO-WD32250 Magnesium

AWS E630 belongs to the iron alloys classification, while ISO-WD32250 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 E630 and the bottom bar is ISO-WD32250 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
45
Elongation at Break, % 8.0
4.5 to 8.6
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
17
Tensile Strength: Ultimate (UTS), MPa 1040
310 to 330

Thermal Properties

Latent Heat of Fusion, J/g 280
340
Melting Completion (Liquidus), °C 1430
600
Melting Onset (Solidus), °C 1380
550
Specific Heat Capacity, J/kg-K 470
980
Thermal Conductivity, W/m-K 17
130
Thermal Expansion, µm/m-K 14
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
25
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
130

Otherwise Unclassified Properties

Base Metal Price, % relative 14
13
Density, g/cm3 7.8
1.8
Embodied Carbon, kg CO2/kg material 2.8
24
Embodied Energy, MJ/kg 40
160
Embodied Water, L/kg 140
950

Common Calculations

Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
67
Strength to Weight: Axial, points 37
49 to 51
Strength to Weight: Bending, points 29
58 to 60
Thermal Diffusivity, mm2/s 4.5
72
Thermal Shock Resistance, points 28
19 to 20

Alloy Composition

Carbon (C), % 0 to 0.050
0
Chromium (Cr), % 16 to 16.8
0
Copper (Cu), % 3.3 to 4.0
0
Iron (Fe), % 71.6 to 75.9
0
Magnesium (Mg), % 0
94.9 to 97.1
Manganese (Mn), % 0.25 to 0.75
0
Molybdenum (Mo), % 0 to 0.75
0
Nickel (Ni), % 4.5 to 5.0
0
Niobium (Nb), % 0.15 to 0.3
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 0.75
0
Sulfur (S), % 0 to 0.030
0
Zinc (Zn), % 0
2.5 to 4.0
Zirconium (Zr), % 0
0.45 to 0.8
Residuals, % 0
0 to 0.3