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AWS ERNi-1 vs. Nuclear Grade Hafnium

AWS ERNi-1 belongs to the nickel 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 (13, in this case) are not shown.

For each property being compared, the top bar is AWS ERNi-1 and the bottom bar is nuclear grade hafnium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
78
Elongation at Break, % 22
25
Poisson's Ratio 0.31
0.26
Shear Modulus, GPa 69
31
Tensile Strength: Ultimate (UTS), MPa 470
350

Thermal Properties

Latent Heat of Fusion, J/g 300
130
Specific Heat Capacity, J/kg-K 450
140
Thermal Expansion, µm/m-K 11
5.9

Otherwise Unclassified Properties

Density, g/cm3 8.7
13

Common Calculations

Stiffness to Weight: Axial, points 12
3.3
Stiffness to Weight: Bending, points 22
11
Strength to Weight: Axial, points 15
7.4
Strength to Weight: Bending, points 15
8.4
Thermal Shock Resistance, points 17
55

Alloy Composition

Aluminum (Al), % 0 to 1.5
0
Carbon (C), % 0 to 0.15
0
Copper (Cu), % 0 to 0.25
0
Hafnium (Hf), % 0
99.8 to 100
Iron (Fe), % 0 to 1.0
0
Manganese (Mn), % 0 to 1.0
0
Nickel (Ni), % 93 to 98
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 0.75
0
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 2.0 to 3.5
0
Residuals, % 0
0 to 0.23