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Nuclear Grade Hafnium vs. EN 1.4729 Stainless Steel

Nuclear grade hafnium belongs to the otherwise unclassified metals classification, while EN 1.4729 stainless steel belongs to the iron alloys. There are 10 material properties with values for both materials. Properties with values for just one material (21, in this case) are not shown.

For each property being compared, the top bar is nuclear grade hafnium and the bottom bar is EN 1.4729 stainless steel.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 13
7.6
Elastic (Young's, Tensile) Modulus, GPa 78
190
Elongation at Break, % 25
15
Latent Heat of Fusion, J/g 130
300
Poisson's Ratio 0.26
0.28
Shear Modulus, GPa 31
75
Specific Heat Capacity, J/kg-K 140
490
Stiffness to Weight: Axial, points 3.3
14
Stiffness to Weight: Bending, points 11
25
Thermal Expansion, µm/m-K 5.9
10

Alloy Composition

Carbon (C), % 0
0.3 to 0.5
Chromium (Cr), % 0
12 to 14
Hafnium (Hf), % 99.8 to 100
0
Iron (Fe), % 0
80.4 to 86.7
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
0 to 1.0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
1.0 to 2.5
Sulfur (S), % 0
0 to 0.030
Residuals, % 0 to 0.23
0