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AWS BAu-3 vs. Type 2 Niobium

Both AWS BAu-3 and Type 2 niobium are otherwise unclassified metals. There are 13 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is AWS BAu-3 and the bottom bar is Type 2 niobium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Poisson's Ratio 0.37
0.4
Shear Modulus, GPa 41
38
Tensile Strength: Ultimate (UTS), MPa 220
140

Thermal Properties

Latent Heat of Fusion, J/g 160
320
Specific Heat Capacity, J/kg-K 300
270
Thermal Expansion, µm/m-K 16
7.3

Otherwise Unclassified Properties

Density, g/cm3 13
8.6

Common Calculations

Stiffness to Weight: Axial, points 5.0
6.8
Stiffness to Weight: Bending, points 13
18
Strength to Weight: Axial, points 4.9
4.6
Strength to Weight: Bending, points 6.4
7.1
Thermal Shock Resistance, points 8.7
13

Alloy Composition


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Carbon (C), % 0
0 to 0.010
Copper (Cu), % 60.9 to 63
0
Gold (Au), % 34.5 to 35.5
0
Hafnium (Hf), % 0
0 to 0.020
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 0
0 to 0.010
Molybdenum (Mo), % 0
0 to 0.020
Nickel (Ni), % 2.5 to 3.5
0 to 0.0050
Niobium (Nb), % 0
99.5 to 100
Nitrogen (N), % 0
0 to 0.010
Oxygen (O), % 0
0 to 0.025
Silicon (Si), % 0
0 to 0.0050
Tantalum (Ta), % 0
0 to 0.3
Titanium (Ti), % 0
0 to 0.030
Tungsten (W), % 0
0 to 0.050
Zirconium (Zr), % 0
0 to 0.020
Residuals, % 0 to 0.15
0