Grade 705C Zirconium vs. Titanium 6-7

Grade 705C zirconium belongs to the otherwise unclassified metals classification, while titanium 6-7 belongs to the titanium alloys. There are 18 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 grade 705C zirconium and the bottom bar is titanium 6-7.

Grade 705C Cast Zirconium Titanium 6-7 (R56700)

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		98
Elastic (Young's, Tensile) Modulus, GPa		120

Elongation at Break, %		13
Elongation at Break, %		11

Poisson's Ratio		0.34
Poisson's Ratio		0.33

Shear Modulus, GPa		36
Shear Modulus, GPa		45

Tensile Strength: Ultimate (UTS), MPa		540
Tensile Strength: Ultimate (UTS), MPa		1020

Tensile Strength: Yield (Proof), MPa		390
Tensile Strength: Yield (Proof), MPa		900

Thermal Properties

Latent Heat of Fusion, J/g		250
Latent Heat of Fusion, J/g		410

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

Thermal Expansion, µm/m-K		5.7
Thermal Expansion, µm/m-K		9.3

Otherwise Unclassified Properties

Density, g/cm³		6.7
Density, g/cm³		5.1

Embodied Water, L/kg		450
Embodied Water, L/kg		190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m³		66
Resilience: Ultimate (Unit Rupture Work), MJ/m³		110

Resilience: Unit (Modulus of Resilience), kJ/m³		790
Resilience: Unit (Modulus of Resilience), kJ/m³		3460

Stiffness to Weight: Axial, points		8.1
Stiffness to Weight: Axial, points		13

Stiffness to Weight: Bending, points		23
Stiffness to Weight: Bending, points		32

Strength to Weight: Axial, points		22
Strength to Weight: Axial, points		56

Strength to Weight: Bending, points		22
Strength to Weight: Bending, points		44

Thermal Shock Resistance, points		69
Thermal Shock Resistance, points		66

Alloy Composition

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

Carbon (C), %		0 to 0.1
Carbon (C), %		0 to 0.080

Hafnium (Hf), %		0 to 4.5
Hafnium (Hf), %		0

Hydrogen (H), %		0 to 0.0050
Hydrogen (H), %		0 to 0.0090

Iron (Fe), %		0 to 0.3
Iron (Fe), %		0 to 0.25

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

Niobium (Nb), %		2.0 to 3.0
Niobium (Nb), %		6.5 to 7.5

Nitrogen (N), %		0 to 0.030
Nitrogen (N), %		0 to 0.050

Oxygen (O), %		0 to 0.3
Oxygen (O), %		0 to 0.2

Phosphorus (P), %		0 to 0.010
Phosphorus (P), %		0

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

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

Zirconium (Zr), %		91.9 to 98
Zirconium (Zr), %		0