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EN 1.4945 Stainless Steel vs. Nuclear Grade Hafnium

EN 1.4945 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 (16, in this case) are not shown.

For each property being compared, the top bar is EN 1.4945 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, % 19 to 34
25
Poisson's Ratio 0.28
0.26
Shear Modulus, GPa 77
31
Tensile Strength: Ultimate (UTS), MPa 640 to 740
350
Tensile Strength: Yield (Proof), MPa 290 to 550
170

Thermal Properties

Latent Heat of Fusion, J/g 290
130
Specific Heat Capacity, J/kg-K 470
140
Thermal Expansion, µm/m-K 17
5.9

Otherwise Unclassified Properties

Density, g/cm3 8.1
13

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130 to 180
73
Resilience: Unit (Modulus of Resilience), kJ/m3 210 to 760
180
Stiffness to Weight: Axial, points 14
3.3
Stiffness to Weight: Bending, points 24
11
Strength to Weight: Axial, points 22 to 25
7.4
Strength to Weight: Bending, points 20 to 22
8.4
Thermal Shock Resistance, points 14 to 16
55

Alloy Composition

Carbon (C), % 0.040 to 0.1
0
Chromium (Cr), % 15.5 to 17.5
0
Hafnium (Hf), % 0
99.8 to 100
Iron (Fe), % 57.9 to 65.7
0
Manganese (Mn), % 0 to 1.5
0
Nickel (Ni), % 15.5 to 17.5
0
Niobium (Nb), % 0.4 to 1.2
0
Nitrogen (N), % 0.060 to 0.14
0
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0.3 to 0.6
0
Sulfur (S), % 0 to 0.015
0
Tungsten (W), % 2.5 to 3.5
0
Residuals, % 0
0 to 0.23