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AWS BNi-7 vs. AWS BAu-2

AWS BNi-7 belongs to the nickel alloys classification, while AWS BAu-2 belongs to the otherwise unclassified metals. There are 16 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is AWS BNi-7 and the bottom bar is AWS BAu-2.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 170
100
Poisson's Ratio 0.3
0.4
Shear Modulus, GPa 67
36
Tensile Strength: Ultimate (UTS), MPa 550
150

Thermal Properties

Brazing Temperature, °C 930 to 1090
890 to 1010
Latent Heat of Fusion, J/g 280
92
Melting Completion (Liquidus), °C 890
890
Melting Onset (Solidus), °C 890
890
Specific Heat Capacity, J/kg-K 490
180
Thermal Expansion, µm/m-K 11
15

Otherwise Unclassified Properties

Density, g/cm3 8.0
17

Common Calculations

Stiffness to Weight: Axial, points 12
3.3
Stiffness to Weight: Bending, points 23
9.1
Strength to Weight: Axial, points 19
2.4
Strength to Weight: Bending, points 19
3.6
Thermal Shock Resistance, points 21
7.1

Alloy Composition

Aluminum (Al), % 0 to 0.050
0
Boron (B), % 0 to 0.010
0
Carbon (C), % 0 to 0.060
0
Chromium (Cr), % 13 to 15
0
Cobalt (Co), % 0 to 0.1
0
Copper (Cu), % 0
19.4 to 20.5
Gold (Au), % 0
79.5 to 80.5
Iron (Fe), % 0 to 0.2
0
Manganese (Mn), % 0 to 0.040
0
Nickel (Ni), % 73.3 to 77.3
0
Phosphorus (P), % 9.7 to 10.5
0
Selenium (Se), % 0 to 0.0050
0
Silicon (Si), % 0 to 0.1
0
Sulfur (S), % 0 to 0.020
0
Titanium (Ti), % 0 to 0.050
0
Zirconium (Zr), % 0 to 0.050
0
Residuals, % 0
0 to 0.15