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AZ80A Magnesium vs. AWS E2553

AZ80A magnesium belongs to the magnesium alloys classification, while AWS E2553 belongs to the iron 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 AZ80A magnesium and the bottom bar is AWS E2553.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 46
200
Elongation at Break, % 3.9 to 8.5
17
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 18
80
Tensile Strength: Ultimate (UTS), MPa 320 to 340
850

Thermal Properties

Latent Heat of Fusion, J/g 350
300
Melting Completion (Liquidus), °C 600
1440
Melting Onset (Solidus), °C 490
1390
Specific Heat Capacity, J/kg-K 990
480
Thermal Conductivity, W/m-K 77
16
Thermal Expansion, µm/m-K 26
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 59
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 12
21
Density, g/cm3 1.7
7.8
Embodied Carbon, kg CO2/kg material 23
4.0
Embodied Energy, MJ/kg 160
56
Embodied Water, L/kg 990
190

Common Calculations

Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 69
25
Strength to Weight: Axial, points 51 to 55
30
Strength to Weight: Bending, points 60 to 63
26
Thermal Diffusivity, mm2/s 45
4.3
Thermal Shock Resistance, points 19 to 20
21

Alloy Composition

Aluminum (Al), % 7.8 to 9.2
0
Carbon (C), % 0
0 to 0.060
Chromium (Cr), % 0
24 to 27
Copper (Cu), % 0 to 0.050
1.5 to 2.5
Iron (Fe), % 0 to 0.0050
55.2 to 64.5
Magnesium (Mg), % 89 to 91.9
0
Manganese (Mn), % 0.12 to 0.5
0.5 to 1.5
Molybdenum (Mo), % 0
2.9 to 3.9
Nickel (Ni), % 0 to 0.0050
6.5 to 8.5
Nitrogen (N), % 0
0.1 to 0.25
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.1
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 0.2 to 0.8
0
Residuals, % 0 to 0.3
0