AWS BNi-3 vs. AWS BNi-7
Both AWS BNi-3 and AWS BNi-7 are nickel alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 76% of their average alloy composition in common.
For each property being compared, the top bar is AWS BNi-3 and the bottom bar is AWS BNi-7.
Metric UnitsUS Customary Units
Mechanical Properties
Elastic (Young's, Tensile) Modulus, GPa | 170 | |
170 |
Poisson's Ratio | 0.31 | |
0.3 |
Shear Modulus, GPa | 66 | |
67 |
Tensile Strength: Ultimate (UTS), MPa | 430 | |
550 |
Thermal Properties
Brazing Temperature, °C | 1010 to 1180 | |
930 to 1090 |
Latent Heat of Fusion, J/g | 350 | |
280 |
Melting Completion (Liquidus), °C | 1040 | |
890 |
Melting Onset (Solidus), °C | 980 | |
890 |
Specific Heat Capacity, J/kg-K | 480 | |
490 |
Thermal Expansion, µm/m-K | 10 | |
11 |
Otherwise Unclassified Properties
Base Metal Price, % relative | 60 | |
55 |
Density, g/cm3 | 8.3 | |
8.0 |
Embodied Carbon, kg CO2/kg material | 9.9 | |
8.8 |
Embodied Energy, MJ/kg | 140 | |
120 |
Embodied Water, L/kg | 220 | |
240 |
Common Calculations
Stiffness to Weight: Axial, points | 12 | |
12 |
Stiffness to Weight: Bending, points | 22 | |
23 |
Strength to Weight: Axial, points | 14 | |
19 |
Strength to Weight: Bending, points | 15 | |
19 |
Thermal Shock Resistance, points | 17 | |
21 |
Alloy Composition
Aluminum (Al), % | 0 to 0.050 | |
0 to 0.050 |
Boron (B), % | 2.8 to 3.5 | |
0 to 0.010 |
Carbon (C), % | 0 to 0.060 | |
0 to 0.060 |
Chromium (Cr), % | 0 | |
13 to 15 |
Cobalt (Co), % | 0 to 0.1 | |
0 to 0.1 |
Iron (Fe), % | 0 to 0.5 | |
0 to 0.2 |
Manganese (Mn), % | 0 | |
0 to 0.040 |
Nickel (Ni), % | 90.1 to 93.3 | |
73.3 to 77.3 |
Phosphorus (P), % | 0 to 0.020 | |
9.7 to 10.5 |
Selenium (Se), % | 0 to 0.0050 | |
0 to 0.0050 |
Silicon (Si), % | 4.0 to 5.0 | |
0 to 0.1 |
Sulfur (S), % | 0 to 0.020 | |
0 to 0.020 |
Titanium (Ti), % | 0 to 0.050 | |
0 to 0.050 |
Zirconium (Zr), % | 0 to 0.050 | |
0 to 0.050 |
Residuals, % | 0 | |
0 to 0.5 |