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EN-MC65120 Magnesium vs. AWS BNi-8

EN-MC65120 magnesium belongs to the magnesium alloys classification, while AWS BNi-8 belongs to the nickel alloys. There are 19 material properties with values for both materials. Properties with values for just one material (13, 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 EN-MC65120 magnesium and the bottom bar is AWS BNi-8.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
180
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 17
67
Tensile Strength: Ultimate (UTS), MPa 160
570

Thermal Properties

Latent Heat of Fusion, J/g 330
390
Melting Completion (Liquidus), °C 590
1010
Melting Onset (Solidus), °C 520
980
Specific Heat Capacity, J/kg-K 970
480
Thermal Expansion, µm/m-K 26
13

Otherwise Unclassified Properties

Base Metal Price, % relative 25
46
Density, g/cm3 1.9
7.9
Embodied Carbon, kg CO2/kg material 25
8.2
Embodied Energy, MJ/kg 190
120
Embodied Water, L/kg 930
220

Common Calculations

Stiffness to Weight: Axial, points 13
12
Stiffness to Weight: Bending, points 62
24
Strength to Weight: Axial, points 23
20
Strength to Weight: Bending, points 34
19
Thermal Shock Resistance, points 9.8
17

Alloy Composition


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Aluminum (Al), % 0
0 to 0.050
Carbon (C), % 0
0 to 0.060
Cobalt (Co), % 0
0 to 0.1
Copper (Cu), % 0 to 0.030
4.0 to 5.0
Iron (Fe), % 0 to 0.010
0
Magnesium (Mg), % 91.8 to 95.1
0
Manganese (Mn), % 0 to 0.15
21.5 to 24.5
Nickel (Ni), % 0 to 0.0050
61.6 to 68.5
Phosphorus (P), % 0
0 to 0.020
Selenium (Se), % 0
0 to 0.0050
Silicon (Si), % 0 to 0.010
6.0 to 8.0
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 0
0 to 0.050
Unspecified Rare Earths, % 2.5 to 4.0
0
Zinc (Zn), % 2.0 to 3.0
0
Zirconium (Zr), % 0.4 to 1.0
0 to 0.050
Residuals, % 0 to 0.010
0 to 0.5