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SAE-AISI H22 Steel vs. Nuclear Grade Hafnium

SAE-AISI H22 steel belongs to the iron alloys classification, while nuclear grade hafnium belongs to the otherwise unclassified metals. There are 13 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 SAE-AISI H22 steel and the bottom bar is nuclear grade hafnium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
78
Poisson's Ratio 0.29
0.26
Shear Modulus, GPa 77
31
Tensile Strength: Ultimate (UTS), MPa 700 to 1920
350

Thermal Properties

Latent Heat of Fusion, J/g 250
130
Specific Heat Capacity, J/kg-K 440
140
Thermal Expansion, µm/m-K 12
5.9

Otherwise Unclassified Properties

Density, g/cm3 8.7
13

Common Calculations

Stiffness to Weight: Axial, points 13
3.3
Stiffness to Weight: Bending, points 22
11
Strength to Weight: Axial, points 22 to 61
7.4
Strength to Weight: Bending, points 20 to 39
8.4
Thermal Shock Resistance, points 22 to 60
55

Alloy Composition

Carbon (C), % 0.3 to 0.4
0
Chromium (Cr), % 1.8 to 3.8
0
Copper (Cu), % 0 to 0.25
0
Hafnium (Hf), % 0
99.8 to 100
Iron (Fe), % 82.2 to 87.4
0
Manganese (Mn), % 0.15 to 0.4
0
Nickel (Ni), % 0 to 0.3
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0.15 to 0.4
0
Sulfur (S), % 0 to 0.030
0
Tungsten (W), % 10 to 11.8
0
Vanadium (V), % 0.25 to 0.5
0
Residuals, % 0
0 to 0.23