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AWS BNi-8 vs. EN-MC65120 Magnesium

AWS BNi-8 belongs to the nickel alloys classification, while EN-MC65120 magnesium belongs to the magnesium 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 AWS BNi-8 and the bottom bar is EN-MC65120 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Otherwise Unclassified Properties

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

Common Calculations

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

Alloy Composition

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