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AWS BNi-7 vs. R05400 Tantalum

AWS BNi-7 belongs to the nickel alloys classification, while R05400 tantalum belongs to the otherwise unclassified metals. There are 14 material properties with values for both materials. Properties with values for just one material (12, 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-7 and the bottom bar is R05400 tantalum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 170
190
Poisson's Ratio 0.3
0.34
Shear Modulus, GPa 67
69
Tensile Strength: Ultimate (UTS), MPa 550
210 to 540

Thermal Properties

Latent Heat of Fusion, J/g 280
140
Specific Heat Capacity, J/kg-K 490
140
Thermal Expansion, µm/m-K 11
6.5

Otherwise Unclassified Properties

Density, g/cm3 8.0
17
Embodied Water, L/kg 240
650

Common Calculations

Stiffness to Weight: Axial, points 12
6.2
Stiffness to Weight: Bending, points 23
11
Strength to Weight: Axial, points 19
3.6 to 9.0
Strength to Weight: Bending, points 19
4.8 to 8.8
Thermal Shock Resistance, points 21
13 to 32

Alloy Composition

Aluminum (Al), % 0 to 0.050
0
Boron (B), % 0 to 0.010
0
Carbon (C), % 0 to 0.060
0 to 0.010
Chromium (Cr), % 13 to 15
0
Cobalt (Co), % 0 to 0.1
0
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 0 to 0.2
0 to 0.010
Manganese (Mn), % 0 to 0.040
0
Molybdenum (Mo), % 0
0 to 0.020
Nickel (Ni), % 73.3 to 77.3
0 to 0.010
Niobium (Nb), % 0
0 to 0.1
Nitrogen (N), % 0
0 to 0.010
Oxygen (O), % 0
0 to 0.030
Phosphorus (P), % 9.7 to 10.5
0
Selenium (Se), % 0 to 0.0050
0
Silicon (Si), % 0 to 0.1
0 to 0.0050
Sulfur (S), % 0 to 0.020
0
Tantalum (Ta), % 0
99.7 to 100
Titanium (Ti), % 0 to 0.050
0 to 0.010
Tungsten (W), % 0
0 to 0.050
Zirconium (Zr), % 0 to 0.050
0
Residuals, % 0 to 0.5
0