Nuclear Grade Hafnium vs. EN 2.4633 Nickel

Nuclear grade hafnium belongs to the otherwise unclassified metals classification, while EN 2.4633 nickel belongs to the nickel alloys. There are 17 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 nuclear grade hafnium and the bottom bar is EN 2.4633 nickel.

Nuclear Grade (Grade R1) Hafnium EN 2.4633 (NiCr25FeAlY) Nickel Alloy

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		78
Elastic (Young's, Tensile) Modulus, GPa		200

Elongation at Break, %		25
Elongation at Break, %		34

Poisson's Ratio		0.26
Poisson's Ratio		0.28

Shear Modulus, GPa		31
Shear Modulus, GPa		76

Tensile Strength: Ultimate (UTS), MPa		350
Tensile Strength: Ultimate (UTS), MPa		760

Tensile Strength: Yield (Proof), MPa		170
Tensile Strength: Yield (Proof), MPa		310

Thermal Properties

Latent Heat of Fusion, J/g		130
Latent Heat of Fusion, J/g		320

Specific Heat Capacity, J/kg-K		140
Specific Heat Capacity, J/kg-K		480

Thermal Expansion, µm/m-K		5.9
Thermal Expansion, µm/m-K		13

Otherwise Unclassified Properties

Density, g/cm³		13
Density, g/cm³		8.2

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m³		73
Resilience: Ultimate (Unit Rupture Work), MJ/m³		210

Resilience: Unit (Modulus of Resilience), kJ/m³		180
Resilience: Unit (Modulus of Resilience), kJ/m³		240

Stiffness to Weight: Axial, points		3.3
Stiffness to Weight: Axial, points		13

Stiffness to Weight: Bending, points		11
Stiffness to Weight: Bending, points		24

Strength to Weight: Axial, points		7.4
Strength to Weight: Axial, points		26

Strength to Weight: Bending, points		8.4
Strength to Weight: Bending, points		23

Thermal Shock Resistance, points		55
Thermal Shock Resistance, points		22

Alloy Composition

Aluminum (Al), %		0
Aluminum (Al), %		1.8 to 2.4

Carbon (C), %		0
Carbon (C), %		0.15 to 0.25

Chromium (Cr), %		0
Chromium (Cr), %		24 to 26

Copper (Cu), %		0
Copper (Cu), %		0 to 0.1

Hafnium (Hf), %		99.8 to 100
Hafnium (Hf), %		0

Iron (Fe), %		0
Iron (Fe), %		8.0 to 11

Manganese (Mn), %		0
Manganese (Mn), %		0 to 0.5

Nickel (Ni), %		0
Nickel (Ni), %		58.8 to 65.9

Phosphorus (P), %		0
Phosphorus (P), %		0 to 0.020

Silicon (Si), %		0
Silicon (Si), %		0 to 0.5

Sulfur (S), %		0
Sulfur (S), %		0 to 0.010

Titanium (Ti), %		0
Titanium (Ti), %		0.1 to 0.2

Yttrium (Y), %		0
Yttrium (Y), %		0.050 to 0.12

Zirconium (Zr), %		0
Zirconium (Zr), %		0.010 to 0.1

Residuals, %		0 to 0.23
Residuals, %		0