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Nuclear Grade Hafnium vs. EN 1.8825 Steel

Nuclear grade hafnium belongs to the otherwise unclassified metals classification, while EN 1.8825 steel belongs to the iron alloys. There are 17 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.

For each property being compared, the top bar is nuclear grade hafnium and the bottom bar is EN 1.8825 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 78
190
Elongation at Break, % 25
22
Poisson's Ratio 0.26
0.29
Shear Modulus, GPa 31
73
Tensile Strength: Ultimate (UTS), MPa 350
570
Tensile Strength: Yield (Proof), MPa 170
420

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

Resilience: Ultimate (Unit Rupture Work), MJ/m3 73
110
Resilience: Unit (Modulus of Resilience), kJ/m3 180
460
Stiffness to Weight: Axial, points 3.3
13
Stiffness to Weight: Bending, points 11
24
Strength to Weight: Axial, points 7.4
20
Strength to Weight: Bending, points 8.4
19
Thermal Shock Resistance, points 55
17

Alloy Composition

Aluminum (Al), % 0
0.015 to 0.054
Carbon (C), % 0
0 to 0.18
Chromium (Cr), % 0
0 to 0.35
Copper (Cu), % 0
0 to 0.6
Hafnium (Hf), % 99.8 to 100
0
Iron (Fe), % 0
95.1 to 99.985
Manganese (Mn), % 0
0 to 1.8
Molybdenum (Mo), % 0
0 to 0.23
Nickel (Ni), % 0
0 to 0.85
Niobium (Nb), % 0
0 to 0.060
Nitrogen (N), % 0
0 to 0.027
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0
0 to 0.55
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0
0 to 0.060
Vanadium (V), % 0
0 to 0.14
Residuals, % 0 to 0.23
0