Other materials
3D Printing、MIM、HIP、Brazing、Spraying、Porous material、PM
BNi-2 nickel-based brazing filler metal
Features:
BNi-2 is one of the most widely used nickel-based brazing alloys, characterized by a low melting temperature and excellent wettability and fluidity. During brazing, the base metal grains do not grow, thereby minimizing the risk of degraded component performance.
Application:
Aerospace: Jet engine components, combustion chambers, and heat exchangers heavily rely on robust high-temperature joints. BNi-2 brazing performs excellently in these applications.
Automotive: Exhaust manifolds, turbochargers, and other high-heat components benefit from the strength and heat resistance provided by BNi-2 joints.
Medical devices: Components requiring biocompatibility and strength, such as orthopedic implants or dental prosthetics, can be effectively joined using BNi-2 brazing.
Power generation: Gas turbines and other high-temperature power generation equipment rely on reliable joints. BNi-2 brazing can provide the necessary strength and performance.
Packing:
Precision grinding, intelligent manufacturing technology, integrated solutions
Aluminum foil bag, iron drum, plastic drum, woven bag, pallet, customized packaging
Date of delivery:
Precision grinding, intelligent manufacturing technology, integrated solutions
3-15 days
key word:
BNi-2 nickel-based brazing powder
Vacuum Brazing · Superalloys · Aerospace
Process Advantages
Low melting point · High wettability
Solidus: 971°C; liquidus: 999°C; brazing temperature range: 1066–1204°C; excellent fluidity, enabling thorough filling of even the smallest brazing gaps.
High sphericity ≥98%
Vacuum atomization technology produces spherical particles with smooth surfaces and ensures smooth powder delivery, making it suitable for various forms such as brazing pastes, powders, and ribbons.
Excellent high-temperature performance
Temperature resistance range: −200°C to 1,000°C; excellent oxidation and sulfidation resistance; room-temperature tensile strength ≥ 900 MPa; maintains superior performance even at elevated temperatures.
Granularity customization
Supports multi‑stage screening with 40, 60, 80, 120, and 200 mesh sizes; particle size can be customized to suit brazing processes, with rapid response.
Product Real-World Photos & Microscopic Morphology
Electron microscopy microstructure
Spherical nickel-based brazing powder with a smooth particle surface, minimal satellite particles, and a uniform particle size distribution.
Brazed joint
Stainless steel/high-temperature alloy vacuum brazed joints are dense and defect-free, with high joint strength.
Real-life photos of the powder
Aluminum foil bags / Iron drums / Plastic drums / Bulk ton containers, with full‑batch COA reports provided.
Regarding BNi-2 nickel-based brazing powder
BNi‑2 (corresponding to the domestic grade BNi82CrSiBFe, AWS A5.8 BNi‑2, and ISO 17672 Ni620) is one of the most widely used nickel‑based brazing alloys. It features a low melting temperature, excellent wettability and fluidity, and does not promote grain growth in the base metal during brazing, thereby minimizing degradation of component performance. Joints produced with this alloy exhibit superior high‑temperature strength, oxidation resistance, and corrosion resistance, making it the material of choice for brazing martensitic stainless steels, austenitic stainless steels, and precipitation‑hardening superalloys. It finds extensive applications in aerospace, mechanical manufacturing, chemical processing, and diamond‑tool industries. The product is available in various forms, including brazing powders, pastes, and foils, with particle sizes customizable to meet customers’ equipment and process requirements.
Typical Chemical Composition (wt%)
| Element | Ni | Cr | Yes | B | Fe | C | S | P |
|---|---|---|---|---|---|---|---|---|
| Standard value* | Margin | 6.0-8.0 | 4.0-5.0 | 2.75-3.5 | 2.5-3.5 | ≤0.06 | ≤0.02 | ≤0.02 |
| Typical measured values | Bal. | 7.0-7.5 | 4.3-4.8 | 3.0-3.2 | 3.0-3.2 | 0.03 | 0.005 | 0.005 |
* Data are based on TIJO corporate standards and the AWS A5.8 BNi-2 grade standard values. Oxygen content ≤0.1%, meeting the requirements for high‑quality vacuum brazing.
Powder Physical Properties & Particle Size Specifications
| Particle size specification (mesh) | Solidus/liquidus (°C) | Brazing temperature (°C) | Tap Density (g/cm³) | Loose packing density (g/cm³) | Sphericity (%) | Oxygen content (%) |
|---|---|---|---|---|---|---|
| -200mesh | 970-1000 | 1010-1177 | - | - | - | - |
| -300mesh | ||||||
| -100+140 mesh | ||||||
| -30+40 mesh | ||||||
| -80+120 mesh | ||||||
| -150mesh | ||||||
| -60+80 mesh | ||||||
| -50+80 mesh |
*All data can be provided with a COA report, and particle size customization is supported; adjustments can be made based on the customer’s brazing equipment and process parameters.
End-to-end testing capability
Each batch of powder undergoes comprehensive inspection for composition, particle size, flowability, and sphericity, ensuring that the powder quality meets the stringent requirements of vacuum brazing, high‑temperature alloy brazing, and diamond tool brazing. A fully traceable Certificate of Analysis (COA) is provided for every batch.
Typical application scenarios
Aerospace
Aeroengine guide vanes (such as GH22, GH3039, etc.), gas turbine thermal barrier panels, honeycomb structures, turbine blades, combustion chambers, and heat exchangers.
Automotive industry
Brazing of high-temperature components such as exhaust manifolds, turbochargers, and exhaust gas recirculation (EGR) coolers.
Diamond tools
Brazing of diamond tools such as core drills, saw blades, and grinding heads offers high bond strength and excellent heat resistance.
Chemical Engineering and Nuclear Power
Resistant to acids, alkalis, chlorides, and seawater corrosion; suitable for marine engineering, chemical equipment, and the nuclear industry.
Medical device
Brazing of components requiring biocompatibility and high strength, such as orthopedic implants and dental restorations.
Electricity generation
High-temperature components in gas turbines and other high-temperature power-generation equipment that require reliable connections.
Food processing
Furnace brazing of food-processing equipment, heat exchangers, and other components
C/C composite material
Brazing for joining C/C composites with metals, suitable for cutting-edge applications such as hypersonic vehicles.
Key Advantages of Choosing TIJO BNi-2 Nickel-Based Brazing Powder
- Background of Powder Metallurgy Technology at Central South University – The atomization technology originates from the Powder Metallurgy Research Institute, with sphericity and particle size distribution precisely controllable.
- Mass production, stable supply – Four production lines with a monthly capacity exceeding 200 tons, ensuring timely delivery.
- Strict quality control system – ISO 9001:2015 certified, with full batch traceability and a complete Certificate of Analysis (COA) provided.
- Free sample – Rapidly provide sample‑validated printing/brazing processes to reduce selection costs.
- Particle size customization/modification – Particle size cutting and mixing ratios can be customized according to equipment parameters, with rapid response.
- End-to-end technical support – From powder parameter optimization to process recommendations, we collaborate with customers on development.
Chemical composition（wt%）
Powder grade | Chemical composition | |||||||
Ni | Cr | Yes | B | Fe | C | S | P | |
BNi-2 | BAl. | 6-8 | 4-5 | 2.75-3.5 | 2.5-3.5 | ≤ 0.06 | ≤ 0.02 | ≤ 0.02 |
Physical indicators
Powder grade | Solid–liquid phase °C | Brazing temperature (°C) | Powder morphology | Loose packing density g/cm³ | Powder sieving (mesh) | Other morphologies |
BNi-2 | 970-1000 | 1066-1204 | Spherical | ≥ 4.0 | 40/60/80/120/200 | powder / ointment / Solder ribbon |
Application areas
Brazing
ZnAl5 (melting point 382℃) is a zinc-based eutectic filler metal suitable for brazing pure zinc and zinc alloys. ZnAl15 (425-460℃ solid-liquid phase) is used as a universal brazing filler metal for aluminum-aluminum brazing and aluminum-copper brazing with excellent spreading and mechanical properties
Recommend products
Inconel 625 nickel-based powder
1. High-Temperature and Corrosion-Resistant Properties: Temperature resistance range: –200°C to 1000°C; excellent oxidation and sulfidation resistance; resistant to seawater, chlorides, and acidic media, making it suitable for marine and chemical‑process applications. 2. Superior Processability: High sphericity (≥98%), low oxygen content (≤0.1%), and excellent flowability, minimizing defects in 3D printing; strong adhesion to substrates, enabling the fabrication of high‑precision, complex structures. 3. High Strength and Toughness: Tensile strength at room temperature ≥ 900 MPa, with outstanding mechanical properties even at elevated temperatures.
View Details
1. High-Temperature Performance Applicable temperature range: -250°C to 700°C, resistant to high-temperature oxidation, creep, and sulfide corrosion. Strength is significantly improved after age hardening (room temperature tensile strength ≥ 1300 MPa). 2. Corrosion Resistance Resistant to acids, alkalis, chlorides, and seawater corrosion, suitable for chemical, marine, and nuclear industries. 3. Process Compatibility High sphericity (≥97%), low oxygen content (≤0.1%), excellent fluidity, compatible with additive manufacturing processes such as SLM (Selective Laser Melting) and EBM (Electron Beam Melting). No tendency for cracking after welding, supports the precision forming of complex structures.
View Details
The carbon and boron in BNi-1 brazing filler metal can diffuse into the base material during the brazing process, thereby increasing the remelting temperature of the brazed joint. This filler metal has a high chromium content, so the brazed joint exhibits good high-temperature performance and is suitable for components subjected to high stress at elevated temperatures.
View Details
BNi-5 brazing filler metal does not contain boron, significantly reducing its effect compared to the base material. It is suitable for brazing thin parts. This filler metal has a high melting temperature and brazing temperature. Due to its high chromium content, the joint's high-temperature strength and oxidation resistance are comparable to BNi-1.
View DetailsMaybe you want to know something else.
Contact Us
Address: No.39, Liandong Yougu lnd. Park, Bachelor Street,Changsha City,Hunan Province, China.
