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S28200 Stainless Steel vs. Nuclear Grade Hafnium

S28200 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 (13, in this case) are not shown.

For each property being compared, the top bar is S28200 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, % 45
25
Poisson's Ratio 0.28
0.26
Shear Modulus, GPa 77
31
Tensile Strength: Ultimate (UTS), MPa 870
350
Tensile Strength: Yield (Proof), MPa 460
170

Thermal Properties

Latent Heat of Fusion, J/g 290
130
Specific Heat Capacity, J/kg-K 480
140
Thermal Expansion, µm/m-K 18
5.9

Otherwise Unclassified Properties

Density, g/cm3 7.6
13

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 330
73
Resilience: Unit (Modulus of Resilience), kJ/m3 540
180
Stiffness to Weight: Axial, points 15
3.3
Stiffness to Weight: Bending, points 26
11
Strength to Weight: Axial, points 32
7.4
Strength to Weight: Bending, points 27
8.4
Thermal Shock Resistance, points 17
55

Alloy Composition

Carbon (C), % 0 to 0.15
0
Chromium (Cr), % 17 to 19
0
Copper (Cu), % 0.75 to 1.3
0
Hafnium (Hf), % 0
99.8 to 100
Iron (Fe), % 57.7 to 64.1
0
Manganese (Mn), % 17 to 19
0
Molybdenum (Mo), % 0.75 to 1.3
0
Nitrogen (N), % 0.4 to 0.6
0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.030
0
Residuals, % 0
0 to 0.23