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Nuclear Grade Hafnium vs. EN 1.4107 Stainless Steel

Nuclear grade hafnium belongs to the otherwise unclassified metals classification, while EN 1.4107 stainless 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 1.4107 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 78
190
Elongation at Break, % 25
18 to 21
Poisson's Ratio 0.26
0.28
Shear Modulus, GPa 31
76
Tensile Strength: Ultimate (UTS), MPa 350
620 to 700
Tensile Strength: Yield (Proof), MPa 170
400 to 570

Thermal Properties

Latent Heat of Fusion, J/g 130
270
Specific Heat Capacity, J/kg-K 140
480
Thermal Expansion, µm/m-K 5.9
10

Otherwise Unclassified Properties

Density, g/cm3 13
7.8

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 73
110 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 180
420 to 840
Stiffness to Weight: Axial, points 3.3
14
Stiffness to Weight: Bending, points 11
25
Strength to Weight: Axial, points 7.4
22 to 25
Strength to Weight: Bending, points 8.4
21 to 22
Thermal Shock Resistance, points 55
22 to 25

Alloy Composition

Carbon (C), % 0
0 to 0.1
Chromium (Cr), % 0
11.5 to 12.5
Copper (Cu), % 0
0 to 0.3
Hafnium (Hf), % 99.8 to 100
0
Iron (Fe), % 0
83.8 to 87.2
Manganese (Mn), % 0
0.5 to 0.8
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
0.8 to 1.5
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
0 to 0.4
Sulfur (S), % 0
0 to 0.020
Vanadium (V), % 0
0 to 0.080
Residuals, % 0 to 0.23
0