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AWS E320 vs. AZ63A Magnesium

AWS E320 belongs to the iron alloys classification, while AZ63A magnesium belongs to the magnesium alloys. There are 20 material properties with values for both materials. Properties with values for just one material (12, 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 E320 and the bottom bar is AZ63A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
46
Elongation at Break, % 34
2.2 to 8.0
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
18
Tensile Strength: Ultimate (UTS), MPa 620
190 to 270

Thermal Properties

Latent Heat of Fusion, J/g 300
350
Melting Completion (Liquidus), °C 1410
610
Melting Onset (Solidus), °C 1360
450
Specific Heat Capacity, J/kg-K 460
980
Thermal Expansion, µm/m-K 14
26

Otherwise Unclassified Properties

Base Metal Price, % relative 38
12
Density, g/cm3 8.2
1.8
Embodied Carbon, kg CO2/kg material 6.5
22
Embodied Energy, MJ/kg 91
150
Embodied Water, L/kg 220
970

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
66
Strength to Weight: Axial, points 21
29 to 41
Strength to Weight: Bending, points 20
40 to 51
Thermal Shock Resistance, points 16
11 to 16

Alloy Composition

Aluminum (Al), % 0
5.3 to 6.7
Carbon (C), % 0 to 0.070
0
Chromium (Cr), % 19 to 21
0
Copper (Cu), % 3.0 to 4.0
0 to 0.25
Iron (Fe), % 31.8 to 43.5
0
Magnesium (Mg), % 0
88.6 to 92.1
Manganese (Mn), % 0.5 to 2.5
0.15 to 0.35
Molybdenum (Mo), % 2.0 to 3.0
0
Nickel (Ni), % 32 to 36
0 to 0.010
Niobium (Nb), % 0 to 1.0
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 0.6
0 to 0.3
Sulfur (S), % 0 to 0.030
0
Zinc (Zn), % 0
2.5 to 3.5
Residuals, % 0
0 to 0.3