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EN 1.4911 Stainless Steel vs. Nuclear Grade Hafnium

EN 1.4911 stainless steel belongs to the iron alloys classification, while nuclear grade hafnium belongs to the otherwise unclassified metals. 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 EN 1.4911 stainless steel and the bottom bar is nuclear grade hafnium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
78
Elongation at Break, % 11
25
Poisson's Ratio 0.28
0.26
Shear Modulus, GPa 76
31
Tensile Strength: Ultimate (UTS), MPa 1070
350
Tensile Strength: Yield (Proof), MPa 970
170

Thermal Properties

Latent Heat of Fusion, J/g 270
130
Specific Heat Capacity, J/kg-K 470
140
Thermal Expansion, µm/m-K 11
5.9

Otherwise Unclassified Properties

Density, g/cm3 7.9
13

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
73
Resilience: Unit (Modulus of Resilience), kJ/m3 2410
180
Stiffness to Weight: Axial, points 14
3.3
Stiffness to Weight: Bending, points 25
11
Strength to Weight: Axial, points 38
7.4
Strength to Weight: Bending, points 30
8.4
Thermal Shock Resistance, points 37
55

Alloy Composition

Boron (B), % 0.0050 to 0.015
0
Carbon (C), % 0.050 to 0.12
0
Chromium (Cr), % 9.8 to 11.2
0
Cobalt (Co), % 5.0 to 7.0
0
Hafnium (Hf), % 0
99.8 to 100
Iron (Fe), % 75.7 to 83.8
0
Manganese (Mn), % 0.3 to 1.3
0
Molybdenum (Mo), % 0.5 to 1.0
0
Nickel (Ni), % 0.2 to 1.2
0
Niobium (Nb), % 0.2 to 0.5
0
Nitrogen (N), % 0 to 0.035
0
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0.1 to 0.8
0
Sulfur (S), % 0 to 0.015
0
Tungsten (W), % 0 to 0.7
0
Vanadium (V), % 0.1 to 0.4
0
Residuals, % 0
0 to 0.23