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AWS BMg-1 vs. 50Cr-50Ni-Cb Alloy

AWS BMg-1 belongs to the magnesium alloys classification, while 50Cr-50Ni-Cb alloy belongs to the otherwise unclassified metals. There are 21 material properties with values for both materials. Properties with values for just one material (10, 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 BMg-1 and the bottom bar is 50Cr-50Ni-Cb alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 47
210
Elongation at Break, % 3.8
5.6
Poisson's Ratio 0.29
0.26
Shear Modulus, GPa 18
84
Tensile Strength: Ultimate (UTS), MPa 180
620
Tensile Strength: Yield (Proof), MPa 110
390

Thermal Properties

Latent Heat of Fusion, J/g 350
350
Specific Heat Capacity, J/kg-K 980
480
Thermal Expansion, µm/m-K 26
15

Otherwise Unclassified Properties

Base Metal Price, % relative 12
60
Density, g/cm3 1.8
8.0
Embodied Carbon, kg CO2/kg material 22
9.2
Embodied Energy, MJ/kg 160
130
Embodied Water, L/kg 980
350

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.9
30
Resilience: Unit (Modulus of Resilience), kJ/m3 120
370
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 66
25
Strength to Weight: Axial, points 27
21
Strength to Weight: Bending, points 39
20
Thermal Shock Resistance, points 10
14

Alloy Composition


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Aluminum (Al), % 8.3 to 9.7
0 to 0.25
Beryllium (Be), % 0.00020 to 0.00080
0
Carbon (C), % 0
0 to 0.1
Chromium (Cr), % 0
47 to 52
Copper (Cu), % 0 to 0.050
0
Iron (Fe), % 0 to 0.0050
0 to 1.0
Magnesium (Mg), % 86.1 to 89.8
0
Manganese (Mn), % 0.15 to 1.5
0 to 0.3
Nickel (Ni), % 0 to 0.0050
43.3 to 51.6
Niobium (Nb), % 0
1.4 to 1.7
Nitrogen (N), % 0
0 to 0.16
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0 to 0.050
0 to 0.5
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 0
0 to 0.5
Zinc (Zn), % 1.7 to 2.3
0
Residuals, % 0 to 0.3
0