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Nuclear Grade Hafnium vs. Grade VDCrV Steel

Nuclear grade hafnium belongs to the otherwise unclassified metals classification, while grade VDCrV steel belongs to the iron alloys. There are 13 material properties with values for both materials. Properties with values for just one material (17, in this case) are not shown.

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

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 78
190
Poisson's Ratio 0.26
0.29
Shear Modulus, GPa 31
80
Tensile Strength: Ultimate (UTS), MPa 350
1730

Thermal Properties

Latent Heat of Fusion, J/g 130
250
Specific Heat Capacity, J/kg-K 140
470
Thermal Expansion, µm/m-K 5.9
13

Otherwise Unclassified Properties

Density, g/cm3 13
7.8

Common Calculations

Stiffness to Weight: Axial, points 3.3
13
Stiffness to Weight: Bending, points 11
24
Strength to Weight: Axial, points 7.4
61
Strength to Weight: Bending, points 8.4
41
Thermal Shock Resistance, points 55
51

Alloy Composition

Carbon (C), % 0
0.62 to 0.72
Chromium (Cr), % 0
0.4 to 0.6
Copper (Cu), % 0
0 to 0.060
Hafnium (Hf), % 99.8 to 100
0
Iron (Fe), % 0
97.8 to 98.8
Manganese (Mn), % 0
0.5 to 0.9
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0
0.15 to 0.3
Sulfur (S), % 0
0 to 0.020
Vanadium (V), % 0
0.15 to 0.25
Residuals, % 0 to 0.23
0