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SAE-AISI H19 Steel vs. Nuclear Grade Hafnium

SAE-AISI H19 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 H19 steel and the bottom bar is nuclear grade hafnium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
78
Poisson's Ratio 0.29
0.26
Shear Modulus, GPa 75
31
Tensile Strength: Ultimate (UTS), MPa 720 to 1990
350

Thermal Properties

Latent Heat of Fusion, J/g 260
130
Specific Heat Capacity, J/kg-K 460
140
Thermal Expansion, µm/m-K 12
5.9

Otherwise Unclassified Properties

Density, g/cm3 8.2
13

Common Calculations

Stiffness to Weight: Axial, points 13
3.3
Stiffness to Weight: Bending, points 24
11
Strength to Weight: Axial, points 24 to 68
7.4
Strength to Weight: Bending, points 22 to 43
8.4
Thermal Shock Resistance, points 21 to 59
55

Alloy Composition

Carbon (C), % 0.32 to 0.45
0
Chromium (Cr), % 4.0 to 4.8
0
Cobalt (Co), % 4.0 to 4.5
0
Copper (Cu), % 0 to 0.25
0
Hafnium (Hf), % 0
99.8 to 100
Iron (Fe), % 81.4 to 85.5
0
Manganese (Mn), % 0.2 to 0.5
0
Molybdenum (Mo), % 0.3 to 0.55
0
Nickel (Ni), % 0 to 0.3
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0.2 to 0.5
0
Sulfur (S), % 0 to 0.030
0
Tungsten (W), % 3.8 to 4.5
0
Vanadium (V), % 1.8 to 2.2
0
Residuals, % 0
0 to 0.23