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AM50A Magnesium vs. AWS E316

AM50A magnesium belongs to the magnesium alloys classification, while AWS E316 belongs to the iron alloys. There are 24 material properties with values for both materials. Properties with values for just one material (8, 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 AM50A magnesium and the bottom bar is AWS E316.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
200
Elongation at Break, % 11
34
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
78
Tensile Strength: Ultimate (UTS), MPa 210
580

Thermal Properties

Latent Heat of Fusion, J/g 350
290
Melting Completion (Liquidus), °C 620
1440
Melting Onset (Solidus), °C 570
1390
Specific Heat Capacity, J/kg-K 1000
470
Thermal Conductivity, W/m-K 65
15
Thermal Expansion, µm/m-K 26
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 16
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 88
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 12
20
Density, g/cm3 1.7
7.9
Embodied Carbon, kg CO2/kg material 23
4.0
Embodied Energy, MJ/kg 160
55
Embodied Water, L/kg 990
160

Common Calculations

Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 71
25
Strength to Weight: Axial, points 35
20
Strength to Weight: Bending, points 47
20
Thermal Diffusivity, mm2/s 39
4.0
Thermal Shock Resistance, points 13
15

Alloy Composition

Aluminum (Al), % 4.4 to 5.4
0
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0
17 to 20
Copper (Cu), % 0 to 0.010
0 to 0.75
Iron (Fe), % 0 to 0.0040
58.6 to 69.5
Magnesium (Mg), % 93.7 to 95.3
0
Manganese (Mn), % 0.26 to 0.6
0.5 to 2.5
Molybdenum (Mo), % 0
2.0 to 3.0
Nickel (Ni), % 0 to 0.0020
11 to 14
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 to 0.22
0