AWS BNi-11 (N99624) Filler Metal
AWS BNi-11 is a nickel-based filler metal for brazing. Cited properties are appropriate for the as-fabricated (no temper or treatment) condition. BNi-11 is the AWS designation for this material. N99624 is the UNS number.
It has a fairly high tensile strength among nickel-based brazing fillers. In addition, it has a fairly high embodied energy and a fairly high base cost.
The graph bars on the material properties cards below compare AWS BNi-11 to: nickel-based brazing fillers (top), all nickel alloys (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.
Mechanical Properties
Elastic (Young's, Tensile) Modulus
190 GPa 28 x 106 psi
Poisson's Ratio
0.3
Shear Modulus
74 GPa 11 x 106 psi
Tensile Strength: Ultimate (UTS)
600 MPa 87 x 103 psi
Thermal Properties
Brazing Temperature
1150 to 1200 °C 2100 to 2200 °F
Latent Heat of Fusion
340 J/g
Melting Completion (Liquidus)
1100 °C 2000 °F
Melting Onset (Solidus)
970 °C 1780 °F
Specific Heat Capacity
450 J/kg-K 0.11 BTU/lb-°F
Thermal Expansion
11 µm/m-K
Otherwise Unclassified Properties
Base Metal Price
75 % relative
Density
9.1 g/cm3 570 lb/ft3
Embodied Carbon
11 kg CO2/kg material
Embodied Energy
160 MJ/kg 67 x 103 BTU/lb
Embodied Water
230 L/kg 27 gal/lb
Common Calculations
Stiffness to Weight: Axial
12 points
Stiffness to Weight: Bending
21 points
Strength to Weight: Axial
18 points
Strength to Weight: Bending
17 points
Thermal Shock Resistance
20 points
Alloy Composition
| Ni | 62.9 to 71.2 | |
| W | 11.5 to 12.8 | |
| Cr | 9.0 to 11.8 | |
| Si | 3.4 to 4.3 | |
| Fe | 2.5 to 4.0 | |
| B | 2.2 to 3.1 | |
| C | 0.3 to 0.5 | |
| Co | 0 to 0.1 | |
| Al | 0 to 0.050 | |
| Ti | 0 to 0.050 | |
| Zr | 0 to 0.050 | |
| P | 0 to 0.020 | |
| S | 0 to 0.020 | |
| Se | 0 to 0.0050 | |
| res. | 0 to 0.5 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Similar Alloys
Further Reading
AWS A5.8: Specification for Filler Metals for Brazing and Braze Welding