Titanium 6-7 vs. Type 2 Niobium

Titanium 6-7 belongs to the titanium alloys classification, while Type 2 niobium belongs to the otherwise unclassified metals. There are 18 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is titanium 6-7 and the bottom bar is Type 2 niobium.

Titanium 6-7 (R56700)Type 2 (Unalloyed Commercial Grade, R04210) Niobium

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		120
Elastic (Young's, Tensile) Modulus, GPa		110

Elongation at Break, %		11
Elongation at Break, %		29

Poisson's Ratio		0.33
Poisson's Ratio		0.4

Shear Modulus, GPa		45
Shear Modulus, GPa		38

Tensile Strength: Ultimate (UTS), MPa		1020
Tensile Strength: Ultimate (UTS), MPa		140

Tensile Strength: Yield (Proof), MPa		900
Tensile Strength: Yield (Proof), MPa		82

Thermal Properties

Latent Heat of Fusion, J/g		410
Latent Heat of Fusion, J/g		320

Specific Heat Capacity, J/kg-K		520
Specific Heat Capacity, J/kg-K		270

Thermal Expansion, µm/m-K		9.3
Thermal Expansion, µm/m-K		7.3

Otherwise Unclassified Properties

Density, g/cm³		5.1
Density, g/cm³		8.6

Embodied Water, L/kg		190
Embodied Water, L/kg		160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m³		110
Resilience: Ultimate (Unit Rupture Work), MJ/m³		35

Resilience: Unit (Modulus of Resilience), kJ/m³		3460
Resilience: Unit (Modulus of Resilience), kJ/m³		32

Stiffness to Weight: Axial, points		13
Stiffness to Weight: Axial, points		6.8

Stiffness to Weight: Bending, points		32
Stiffness to Weight: Bending, points		18

Strength to Weight: Axial, points		56
Strength to Weight: Axial, points		4.6

Strength to Weight: Bending, points		44
Strength to Weight: Bending, points		7.1

Thermal Shock Resistance, points		66
Thermal Shock Resistance, points		13

Alloy Composition

Aluminum (Al), %		5.5 to 6.5
Aluminum (Al), %		0

Carbon (C), %		0 to 0.080
Carbon (C), %		0 to 0.010

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

Hydrogen (H), %		0 to 0.0090
Hydrogen (H), %		0 to 0.0015

Iron (Fe), %		0 to 0.25
Iron (Fe), %		0 to 0.010

Molybdenum (Mo), %		6.5 to 7.5
Molybdenum (Mo), %		0 to 0.020

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

Niobium (Nb), %		6.5 to 7.5
Niobium (Nb), %		99.5 to 100

Nitrogen (N), %		0 to 0.050
Nitrogen (N), %		0 to 0.010

Oxygen (O), %		0 to 0.2
Oxygen (O), %		0 to 0.025

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

Tantalum (Ta), %		0 to 0.5
Tantalum (Ta), %		0 to 0.3

Titanium (Ti), %		84.9 to 88
Titanium (Ti), %		0 to 0.030

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

Zirconium (Zr), %		0
Zirconium (Zr), %		0 to 0.020