Grade 31 Titanium vs. R04295 Alloy

Grade 31 titanium belongs to the titanium alloys classification, while R04295 alloy 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 grade 31 titanium and the bottom bar is R04295 alloy.

Grade 31 (R53532) Titanium UNS R04295 Niobium-Hafnium Alloy

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		110
Elastic (Young's, Tensile) Modulus, GPa		100

Elongation at Break, %		20
Elongation at Break, %		22

Poisson's Ratio		0.32
Poisson's Ratio		0.38

Shear Modulus, GPa		41
Shear Modulus, GPa		37

Tensile Strength: Ultimate (UTS), MPa		510
Tensile Strength: Ultimate (UTS), MPa		410

Tensile Strength: Yield (Proof), MPa		450
Tensile Strength: Yield (Proof), MPa		300

Thermal Properties

Latent Heat of Fusion, J/g		420
Latent Heat of Fusion, J/g		300

Specific Heat Capacity, J/kg-K		540
Specific Heat Capacity, J/kg-K		260

Thermal Expansion, µm/m-K		8.7
Thermal Expansion, µm/m-K		7.2

Otherwise Unclassified Properties

Density, g/cm³		4.5
Density, g/cm³		9.0

Embodied Water, L/kg		230
Embodied Water, L/kg		950

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m³		99
Resilience: Ultimate (Unit Rupture Work), MJ/m³		84

Resilience: Unit (Modulus of Resilience), kJ/m³		940
Resilience: Unit (Modulus of Resilience), kJ/m³		430

Stiffness to Weight: Axial, points		13
Stiffness to Weight: Axial, points		6.3

Stiffness to Weight: Bending, points		35
Stiffness to Weight: Bending, points		17

Strength to Weight: Axial, points		32
Strength to Weight: Axial, points		13

Strength to Weight: Bending, points		32
Strength to Weight: Bending, points		14

Thermal Shock Resistance, points		39
Thermal Shock Resistance, points		40

Alloy Composition

Carbon (C), %		0 to 0.080
Carbon (C), %		0 to 0.015

Cobalt (Co), %		0.2 to 0.8
Cobalt (Co), %		0

Hafnium (Hf), %		0
Hafnium (Hf), %		9.0 to 11

Hydrogen (H), %		0 to 0.015
Hydrogen (H), %		0 to 0.0015

Iron (Fe), %		0 to 0.3
Iron (Fe), %		0

Niobium (Nb), %		0
Niobium (Nb), %		85.9 to 90.3

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

Oxygen (O), %		0 to 0.35
Oxygen (O), %		0 to 0.025

Palladium (Pd), %		0.040 to 0.080
Palladium (Pd), %		0

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

Titanium (Ti), %		97.9 to 99.76
Titanium (Ti), %		0.7 to 1.3

Tungsten (W), %		0
Tungsten (W), %		0 to 0.5

Zirconium (Zr), %		0
Zirconium (Zr), %		0 to 0.7

Residuals, %		0 to 0.4
Residuals, %		0