Nuclear Grade Hafnium vs. C99600 Bronze

Nuclear grade hafnium belongs to the otherwise unclassified metals classification, while C99600 bronze belongs to the copper alloys. There are 17 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is nuclear grade hafnium and the bottom bar is C99600 bronze.

Nuclear Grade (Grade R1) Hafnium UNS C99600 Manganese Bronze

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		78
Elastic (Young's, Tensile) Modulus, GPa		150

Elongation at Break, %		25
Elongation at Break, %		27 to 34

Poisson's Ratio		0.26
Poisson's Ratio		0.34

Shear Modulus, GPa		31
Shear Modulus, GPa		56

Tensile Strength: Ultimate (UTS), MPa		350
Tensile Strength: Ultimate (UTS), MPa		560

Tensile Strength: Yield (Proof), MPa		170
Tensile Strength: Yield (Proof), MPa		250 to 300

Thermal Properties

Latent Heat of Fusion, J/g		130
Latent Heat of Fusion, J/g		240

Specific Heat Capacity, J/kg-K		140
Specific Heat Capacity, J/kg-K		440

Thermal Expansion, µm/m-K		5.9
Thermal Expansion, µm/m-K		19

Otherwise Unclassified Properties

Density, g/cm³		13
Density, g/cm³		8.1

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m³		73
Resilience: Ultimate (Unit Rupture Work), MJ/m³		130 to 150

Resilience: Unit (Modulus of Resilience), kJ/m³		180
Resilience: Unit (Modulus of Resilience), kJ/m³		210 to 310

Stiffness to Weight: Axial, points		3.3
Stiffness to Weight: Axial, points		10

Stiffness to Weight: Bending, points		11
Stiffness to Weight: Bending, points		22

Strength to Weight: Axial, points		7.4
Strength to Weight: Axial, points		19

Strength to Weight: Bending, points		8.4
Strength to Weight: Bending, points		19

Thermal Shock Resistance, points		55
Thermal Shock Resistance, points		14

Alloy Composition

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Aluminum (Al), %		0
Aluminum (Al), %		1.0 to 2.8

Carbon (C), %		0
Carbon (C), %		0 to 0.050

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

Copper (Cu), %		0
Copper (Cu), %		50.8 to 60

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

Iron (Fe), %		0
Iron (Fe), %		0 to 0.2

Lead (Pb), %		0
Lead (Pb), %		0 to 0.020

Manganese (Mn), %		0
Manganese (Mn), %		39 to 45

Nickel (Ni), %		0
Nickel (Ni), %		0 to 0.2

Silicon (Si), %		0
Silicon (Si), %		0 to 0.1

Tin (Sn), %		0
Tin (Sn), %		0 to 0.1

Zinc (Zn), %		0
Zinc (Zn), %		0 to 0.2

Residuals, %		0 to 0.23
Residuals, %		0 to 0.3