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Nuclear Grade Hafnium vs. EN 1.5507 Steel

Nuclear grade hafnium belongs to the otherwise unclassified metals classification, while EN 1.5507 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 EN 1.5507 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
73
Tensile Strength: Ultimate (UTS), MPa 350
450 to 880

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
16 to 31
Strength to Weight: Bending, points 8.4
17 to 26
Thermal Shock Resistance, points 55
13 to 26

Alloy Composition

Aluminum (Al), % 0
0.020 to 0.080
Boron (B), % 0
0.00080 to 0.0050
Carbon (C), % 0
0.21 to 0.25
Chromium (Cr), % 0
0.25 to 0.35
Copper (Cu), % 0
0 to 0.25
Hafnium (Hf), % 99.8 to 100
0
Iron (Fe), % 0
97.8 to 98.7
Manganese (Mn), % 0
0.8 to 1.0
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 0
0 to 0.15
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0
0 to 0.060
Residuals, % 0 to 0.23
0