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AZ31C Magnesium vs. AWS E2593

AZ31C magnesium belongs to the magnesium alloys classification, while AWS E2593 belongs to the iron alloys. There are 22 material properties with values for both materials. Properties with values for just one material (9, 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 AZ31C magnesium and the bottom bar is AWS E2593.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
200
Elongation at Break, % 12
17
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 17
80
Tensile Strength: Ultimate (UTS), MPa 260
850

Thermal Properties

Latent Heat of Fusion, J/g 350
300
Melting Completion (Liquidus), °C 600
1430
Melting Onset (Solidus), °C 550
1390
Specific Heat Capacity, J/kg-K 990
470
Thermal Conductivity, W/m-K 130
16
Thermal Expansion, µm/m-K 26
14

Otherwise Unclassified Properties

Base Metal Price, % relative 12
22
Density, g/cm3 1.7
7.8
Embodied Carbon, kg CO2/kg material 23
4.2
Embodied Energy, MJ/kg 160
59
Embodied Water, L/kg 970
190

Common Calculations

Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 70
25
Strength to Weight: Axial, points 42
30
Strength to Weight: Bending, points 53
25
Thermal Diffusivity, mm2/s 74
4.3
Thermal Shock Resistance, points 16
21

Alloy Composition

Aluminum (Al), % 2.4 to 3.6
0
Carbon (C), % 0
0 to 0.040
Chromium (Cr), % 0
24 to 27
Copper (Cu), % 0 to 0.1
1.5 to 3.0
Iron (Fe), % 0
52.7 to 62.5
Magnesium (Mg), % 93.4 to 97
0
Manganese (Mn), % 0.15 to 1.0
0.5 to 1.5
Molybdenum (Mo), % 0
2.9 to 3.9
Nickel (Ni), % 0 to 0.030
8.5 to 10.5
Nitrogen (N), % 0
0.080 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), % 0.5 to 1.5
0
Residuals, % 0 to 0.3
0