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AWS BNi-2 vs. Nuclear Grade Hafnium

AWS BNi-2 belongs to the nickel alloys classification, while nuclear grade hafnium belongs to the otherwise unclassified metals. There are 13 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is AWS BNi-2 and the bottom bar is nuclear grade hafnium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
78
Poisson's Ratio 0.3
0.26
Shear Modulus, GPa 68
31
Tensile Strength: Ultimate (UTS), MPa 440
350

Thermal Properties

Latent Heat of Fusion, J/g 360
130
Specific Heat Capacity, J/kg-K 490
140
Thermal Expansion, µm/m-K 11
5.9

Otherwise Unclassified Properties

Density, g/cm3 8.2
13

Common Calculations

Stiffness to Weight: Axial, points 12
3.3
Stiffness to Weight: Bending, points 23
11
Strength to Weight: Axial, points 15
7.4
Strength to Weight: Bending, points 16
8.4
Thermal Shock Resistance, points 16
55

Alloy Composition

Aluminum (Al), % 0 to 0.050
0
Boron (B), % 2.8 to 3.5
0
Carbon (C), % 0 to 0.060
0
Chromium (Cr), % 6.0 to 8.0
0
Cobalt (Co), % 0 to 0.1
0
Hafnium (Hf), % 0
99.8 to 100
Iron (Fe), % 2.5 to 3.5
0
Nickel (Ni), % 79.1 to 84.8
0
Phosphorus (P), % 0 to 0.020
0
Selenium (Se), % 0 to 0.0050
0
Silicon (Si), % 4.0 to 5.0
0
Sulfur (S), % 0 to 0.020
0
Titanium (Ti), % 0 to 0.050
0
Zirconium (Zr), % 0 to 0.050
0
Residuals, % 0
0 to 0.23