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AZ80A Magnesium vs. AWS E320LR

AZ80A magnesium belongs to the magnesium alloys classification, while AWS E320LR belongs to the iron alloys. There are 20 material properties with values for both materials. Properties with values for just one material (11, 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 AZ80A magnesium and the bottom bar is AWS E320LR.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 46
200
Elongation at Break, % 3.9 to 8.5
34
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 18
77
Tensile Strength: Ultimate (UTS), MPa 320 to 340
580

Thermal Properties

Latent Heat of Fusion, J/g 350
300
Melting Completion (Liquidus), °C 600
1410
Melting Onset (Solidus), °C 490
1360
Specific Heat Capacity, J/kg-K 990
460
Thermal Expansion, µm/m-K 26
14

Otherwise Unclassified Properties

Base Metal Price, % relative 12
36
Density, g/cm3 1.7
8.2
Embodied Carbon, kg CO2/kg material 23
6.2
Embodied Energy, MJ/kg 160
87
Embodied Water, L/kg 990
220

Common Calculations

Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 69
24
Strength to Weight: Axial, points 51 to 55
20
Strength to Weight: Bending, points 60 to 63
19
Thermal Shock Resistance, points 19 to 20
15

Alloy Composition

Aluminum (Al), % 7.8 to 9.2
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
19 to 21
Copper (Cu), % 0 to 0.050
3.0 to 4.0
Iron (Fe), % 0 to 0.0050
32.7 to 42.5
Magnesium (Mg), % 89 to 91.9
0
Manganese (Mn), % 0.12 to 0.5
1.5 to 2.5
Molybdenum (Mo), % 0
2.0 to 3.0
Nickel (Ni), % 0 to 0.0050
32 to 36
Niobium (Nb), % 0
0 to 0.4
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0 to 0.1
0 to 0.3
Sulfur (S), % 0
0 to 0.015
Zinc (Zn), % 0.2 to 0.8
0
Residuals, % 0 to 0.3
0