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SAE-AISI T6 Steel vs. Nuclear Grade Hafnium

SAE-AISI T6 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 T6 steel and the bottom bar is nuclear grade hafnium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
78
Poisson's Ratio 0.29
0.26
Shear Modulus, GPa 81
31
Tensile Strength: Ultimate (UTS), MPa 880 to 2150
350

Thermal Properties

Latent Heat of Fusion, J/g 250
130
Specific Heat Capacity, J/kg-K 400
140
Thermal Expansion, µm/m-K 12
5.9

Otherwise Unclassified Properties

Density, g/cm3 9.5
13

Common Calculations

Stiffness to Weight: Axial, points 12
3.3
Stiffness to Weight: Bending, points 21
11
Strength to Weight: Axial, points 26 to 63
7.4
Strength to Weight: Bending, points 21 to 39
8.4
Thermal Shock Resistance, points 26 to 64
55

Alloy Composition

Carbon (C), % 0.75 to 0.85
0
Chromium (Cr), % 4.0 to 4.8
0
Cobalt (Co), % 11 to 13
0
Copper (Cu), % 0 to 0.25
0
Hafnium (Hf), % 0
99.8 to 100
Iron (Fe), % 55.9 to 63.5
0
Manganese (Mn), % 0.2 to 0.4
0
Molybdenum (Mo), % 0.4 to 1.0
0
Nickel (Ni), % 0 to 0.3
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0.2 to 0.4
0
Sulfur (S), % 0 to 0.030
0
Tungsten (W), % 18.5 to 21
0
Vanadium (V), % 1.5 to 2.1
0
Residuals, % 0
0 to 0.23