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AWS E316LMn vs. AZ31C Magnesium

AWS E316LMn belongs to the iron alloys classification, while AZ31C magnesium belongs to the magnesium 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 AWS E316LMn and the bottom bar is AZ31C magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
45
Elongation at Break, % 23
12
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 79
17
Tensile Strength: Ultimate (UTS), MPa 620
260

Thermal Properties

Latent Heat of Fusion, J/g 300
350
Melting Completion (Liquidus), °C 1420
600
Melting Onset (Solidus), °C 1370
550
Specific Heat Capacity, J/kg-K 470
990
Thermal Expansion, µm/m-K 14
26

Otherwise Unclassified Properties

Base Metal Price, % relative 24
12
Density, g/cm3 7.9
1.7
Embodied Carbon, kg CO2/kg material 4.6
23
Embodied Energy, MJ/kg 64
160
Embodied Water, L/kg 180
970

Common Calculations

Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
70
Strength to Weight: Axial, points 22
42
Strength to Weight: Bending, points 20
53
Thermal Shock Resistance, points 15
16

Alloy Composition

Aluminum (Al), % 0
2.4 to 3.6
Carbon (C), % 0 to 0.040
0
Chromium (Cr), % 18 to 21
0
Copper (Cu), % 0 to 0.75
0 to 0.1
Iron (Fe), % 47.5 to 59.4
0
Magnesium (Mg), % 0
93.4 to 97
Manganese (Mn), % 5.0 to 8.0
0.15 to 1.0
Molybdenum (Mo), % 2.5 to 3.5
0
Nickel (Ni), % 15 to 18
0 to 0.030
Nitrogen (N), % 0.1 to 0.25
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 0.9
0 to 0.1
Sulfur (S), % 0 to 0.030
0
Zinc (Zn), % 0
0.5 to 1.5
Residuals, % 0
0 to 0.3