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AISI 309Cb Stainless Steel vs. Nuclear Grade Hafnium

AISI 309Cb 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 (18, in this case) are not shown.

For each property being compared, the top bar is AISI 309Cb 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, % 39
25
Poisson's Ratio 0.28
0.26
Shear Modulus, GPa 78
31
Tensile Strength: Ultimate (UTS), MPa 580
350
Tensile Strength: Yield (Proof), MPa 230
170

Thermal Properties

Latent Heat of Fusion, J/g 300
130
Specific Heat Capacity, J/kg-K 480
140
Thermal Expansion, µm/m-K 16
5.9

Otherwise Unclassified Properties

Density, g/cm3 7.8
13

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
73
Resilience: Unit (Modulus of Resilience), kJ/m3 140
180
Stiffness to Weight: Axial, points 14
3.3
Stiffness to Weight: Bending, points 25
11
Strength to Weight: Axial, points 20
7.4
Strength to Weight: Bending, points 20
8.4
Thermal Shock Resistance, points 13
55

Alloy Composition

Carbon (C), % 0 to 0.080
0
Chromium (Cr), % 22 to 24
0
Hafnium (Hf), % 0
99.8 to 100
Iron (Fe), % 56 to 66
0
Manganese (Mn), % 0 to 2.0
0
Nickel (Ni), % 12 to 16
0
Niobium (Nb), % 0 to 1.1
0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 0.75
0
Sulfur (S), % 0 to 0.030
0
Residuals, % 0
0 to 0.23