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AWS E33-31 vs. Nuclear Grade Hafnium

AWS E33-31 belongs to the iron alloys classification, while nuclear grade hafnium belongs to the otherwise unclassified metals. There are 14 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is AWS E33-31 and the bottom bar is nuclear grade hafnium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
78
Elongation at Break, % 29
25
Poisson's Ratio 0.27
0.26
Shear Modulus, GPa 81
31
Tensile Strength: Ultimate (UTS), MPa 810
350

Thermal Properties

Latent Heat of Fusion, J/g 320
130
Specific Heat Capacity, J/kg-K 480
140
Thermal Expansion, µm/m-K 14
5.9

Otherwise Unclassified Properties

Density, g/cm3 7.9
13

Common Calculations

Stiffness to Weight: Axial, points 14
3.3
Stiffness to Weight: Bending, points 25
11
Strength to Weight: Axial, points 28
7.4
Strength to Weight: Bending, points 24
8.4
Thermal Shock Resistance, points 19
55

Alloy Composition

Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 31 to 35
0
Copper (Cu), % 0.4 to 0.8
0
Hafnium (Hf), % 0
99.8 to 100
Iron (Fe), % 24.7 to 34.8
0
Manganese (Mn), % 2.5 to 4.0
0
Molybdenum (Mo), % 1.0 to 2.0
0
Nickel (Ni), % 30 to 32
0
Nitrogen (N), % 0.3 to 0.5
0
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0 to 0.9
0
Sulfur (S), % 0 to 0.010
0
Residuals, % 0
0 to 0.23