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AWS BAu-3 vs. AWS BNi-7

AWS BAu-3 belongs to the otherwise unclassified metals classification, while AWS BNi-7 belongs to the nickel alloys. There are 16 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is AWS BAu-3 and the bottom bar is AWS BNi-7.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
170
Poisson's Ratio 0.37
0.3
Shear Modulus, GPa 41
67
Tensile Strength: Ultimate (UTS), MPa 220
550

Thermal Properties

Brazing Temperature, °C 1030 to 1090
930 to 1090
Latent Heat of Fusion, J/g 160
280
Melting Completion (Liquidus), °C 1030
890
Melting Onset (Solidus), °C 970
890
Specific Heat Capacity, J/kg-K 300
490
Thermal Expansion, µm/m-K 16
11

Otherwise Unclassified Properties

Density, g/cm3 13
8.0

Common Calculations

Stiffness to Weight: Axial, points 5.0
12
Stiffness to Weight: Bending, points 13
23
Strength to Weight: Axial, points 4.9
19
Strength to Weight: Bending, points 6.4
19
Thermal Shock Resistance, points 8.7
21

Alloy Composition

Aluminum (Al), % 0
0 to 0.050
Boron (B), % 0
0 to 0.010
Carbon (C), % 0
0 to 0.060
Chromium (Cr), % 0
13 to 15
Cobalt (Co), % 0
0 to 0.1
Copper (Cu), % 60.9 to 63
0
Gold (Au), % 34.5 to 35.5
0
Iron (Fe), % 0
0 to 0.2
Manganese (Mn), % 0
0 to 0.040
Nickel (Ni), % 2.5 to 3.5
73.3 to 77.3
Phosphorus (P), % 0
9.7 to 10.5
Selenium (Se), % 0
0 to 0.0050
Silicon (Si), % 0
0 to 0.1
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 0
0 to 0.050
Zirconium (Zr), % 0
0 to 0.050
Residuals, % 0
0 to 0.5