Type 4 Niobium vs. AWS BNi-6

Type 4 niobium belongs to the otherwise unclassified metals classification, while AWS BNi-6 belongs to the nickel alloys. There are 14 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is Type 4 niobium and the bottom bar is AWS BNi-6.

Type 4 (Alloyed Commercial Grade, R04261) Niobium AWS BNi-6 (N99700) Filler Metal

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		110
Elastic (Young's, Tensile) Modulus, GPa		160

Poisson's Ratio		0.4
Poisson's Ratio		0.31

Shear Modulus, GPa		38
Shear Modulus, GPa		62

Tensile Strength: Ultimate (UTS), MPa		220
Tensile Strength: Ultimate (UTS), MPa		450

Thermal Properties

Latent Heat of Fusion, J/g		310
Latent Heat of Fusion, J/g		260

Specific Heat Capacity, J/kg-K		270
Specific Heat Capacity, J/kg-K		480

Thermal Expansion, µm/m-K		7.3
Thermal Expansion, µm/m-K		9.8

Otherwise Unclassified Properties

Density, g/cm³		8.6
Density, g/cm³		8.2

Embodied Water, L/kg		160
Embodied Water, L/kg		210

Common Calculations

Stiffness to Weight: Axial, points		6.8
Stiffness to Weight: Axial, points		11

Stiffness to Weight: Bending, points		18
Stiffness to Weight: Bending, points		22

Strength to Weight: Axial, points		7.2
Strength to Weight: Axial, points		15

Strength to Weight: Bending, points		9.5
Strength to Weight: Bending, points		16

Thermal Shock Resistance, points		21
Thermal Shock Resistance, points		20

Alloy Composition

Aluminum (Al), %		0
Aluminum (Al), %		0 to 0.050

Carbon (C), %		0 to 0.010
Carbon (C), %		0 to 0.060

Cobalt (Co), %		0
Cobalt (Co), %		0 to 0.1

Hafnium (Hf), %		0 to 0.020
Hafnium (Hf), %		0

Hydrogen (H), %		0 to 0.0015
Hydrogen (H), %		0

Iron (Fe), %		0 to 0.010
Iron (Fe), %		0

Molybdenum (Mo), %		0 to 0.050
Molybdenum (Mo), %		0

Nickel (Ni), %		0 to 0.0050
Nickel (Ni), %		87.2 to 90

Niobium (Nb), %		98.1 to 99.2
Niobium (Nb), %		0

Nitrogen (N), %		0 to 0.010
Nitrogen (N), %		0

Oxygen (O), %		0 to 0.025
Oxygen (O), %		0

Phosphorus (P), %		0
Phosphorus (P), %		10 to 12

Selenium (Se), %		0
Selenium (Se), %		0 to 0.0050

Silicon (Si), %		0 to 0.0050
Silicon (Si), %		0

Sulfur (S), %		0
Sulfur (S), %		0 to 0.020

Tantalum (Ta), %		0 to 0.5
Tantalum (Ta), %		0

Titanium (Ti), %		0 to 0.020
Titanium (Ti), %		0 to 0.050

Tungsten (W), %		0 to 0.050
Tungsten (W), %		0

Zirconium (Zr), %		0.8 to 1.2
Zirconium (Zr), %		0 to 0.050

Residuals, %		0
Residuals, %		0 to 0.5