Nickel-based
Nickel-based filler material is a brazing filler composed of nickel as the matrix, supplemented with low-melting-point elements (such as boron, silicon, phosphorus, etc.) and strengthening elements (such as chromium, cobalt, molybdenum, tungsten, iron, etc.)
Titanium-zirconium-copper-nickel brazing alloy
Features:
1. High‑strength bonding: The brazed joint exhibits high strength (≥300 MPa) and excellent fatigue resistance, making it suitable for high‑load components. 2. High‑temperature and oxidation resistance: It can operate at temperatures exceeding 800°C, with superior oxidation resistance compared to conventional silver‑based brazing alloys. 3. Excellent wettability: It provides outstanding wetting on difficult-to-braze materials such as titanium alloys and ceramics, reducing porosity and enhancing sealing performance. 4. Environmentally friendly and cost‑effective: Cadmium‑free and silver‑free formulation, with controllable costs, compliant with RoHS and industrial environmental standards.
Application:
Packing:
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:
Ti37.5ZrCuNi titanium–zirconium–copper–nickel brazing alloy
Powdered · Creamy High-Temperature Active Brazing · Specifically for Titanium Alloys and Ceramics
Core Advantages of Ti37.5ZrCuNi Brazing Alloy
High-strength connection
The brazed joint exhibits a strength of ≥300 MPa, excellent fatigue resistance, and is well-suited for high‑load titanium alloy/ceramic components.
High-temperature resistant · Oxidation-resistant
The operating temperature can exceed 800°C, and its high-temperature oxidation resistance is superior to that of conventional silver-based brazing alloys.
Excellent wettability
It exhibits excellent wettability on difficult-to-bond materials such as titanium alloys and alumina/zirconia ceramics, resulting in a dense brazed joint with high gas tightness.
Green Economy
Cadmium-free and silver-free, with controllable costs, compliant with RoHS and high-end industrial environmental standards.
Product Real-World Photos & Microscopic Morphology
Powder SEM (-200 mesh)
Spherical or near-spherical particles with good flowability and uniform composition.
Real-life photo of powdered brazing filler metal
Gray powder, packaged in vacuum-sealed aluminum foil bags or plastic canisters.
Real-life photo of paste-type solder alloy
Syringe/plastic can packaging, ready-to-use, with adjustable viscosity.
Ti37.5ZrCuNi active brazing alloy
Titanium–zirconium–copper–nickel brazing filler metal is an active brazing alloy specially developed for joining titanium alloys, high‑temperature alloys, and ceramics to metals. Among these, the Ti37.5ZrCuNi composition (Ti 37.5%, Zr 37.5%, Cu 15%, Ni 10%) exhibits a moderate melting point of 805–815°C and excellent high‑temperature performance. The Ti and Zr elements in this filler metal possess exceptionally high chemical reactivity, enabling effective wetting of the oxide layer on titanium alloy surfaces and the surface of ceramics, thereby forming strong chemical bonds. This results in brazed joints with high strength and superior resistance to thermal shock. The product is manufactured using vacuum atomization powder technology, with an oxygen content of ≤0.1% and excellent flowability, allowing it to be formulated into both powdered forms (−100 mesh to −300 mesh) and paste forms (mixed with organic carriers). It is suitable for vacuum brazing, argon‑protected brazing, and automated dispensing processes. Typical applications include titanium alloy engine blades and casings, ceramic‑to‑metal transition joints, nuclear reactor cooling pipelines, and X‑ray tube seals.
Chemical Composition (wt%, Preferred Grade)
| Grade | You | Zr | Cu | Ni | Solidus (°C) | Liquidus temperature (°C) | Brazing temperature (°C) |
|---|---|---|---|---|---|---|---|
| Ti37.5ZrCuNi | 37.5 | 37.5 | 15 | 10 | 805 | 815 | 850-950 |
| Ti40ZrCuNi | 40 | 20 | 20 | 20 | 750 | 820 | — |
| BIIP16 | 57 | 13 | 21 | 9 | 910 | 920 | — |
* The above values are for reference only; please refer to the Certificate of Analysis (COA) for the official specifications. Our flagship product is Ti37.5ZrCuNi, and custom formulations are available.
Powder Particle Size Specifications & Physical Properties
| Particle size specification | Corresponding mesh count | D50 range (μm) | Loose packing density (g/cm³) | Flowability (s/50g) | Recommended Process |
|---|---|---|---|---|---|
| -100 mesh | ≤150μm | 80-120 | ≥3.2 | ≤28 | Coarse powder pre-setting, paste raw materials |
| -200 mesh | ≤75μm | 40-65 | ≥3.4 | ≤26 | Paste raw materials, flame brazing, automatic powder feeding |
| -300 mesh | ≤48μm | 25-40 | ≥3.5 | ≤25 | Fine paste, spray coating, vacuum brazing powder |
* The powdered brazing filler metal exhibits excellent fluidity and can be customized as needed; the paste‑type product offers adjustable viscosity.
Creamy formulation
| Product form | Alloy powder content (wt%) | Binder (wt%) | Viscosity (Pa·s) | Recommended Process |
|---|---|---|---|---|
| Ti37.5ZrCuNi solder paste | 80-90 | Margin | 30-200 | Automatic dispensing, screen printing, manual application |
* Viscosity can be customized to suit the customer’s dispensing equipment and process; the carrier evaporates completely, leaving minimal residue.
| Base material combination | Recommended Brazing Temperature (°C) | Protective atmosphere/vacuum level | Joint strength | Features |
|---|---|---|---|---|
| Titanium alloy - TC4 | 880-930 | Vacuum ≤ 5×10⁻³ Pa | ≥350MPa | Excellent wettability, no brittle phases. |
| Titanium alloy–stainless steel | 900-950 | Vacuum or argon gas | ≥300MPa | Brazing time must be controlled to ensure a uniform diffusion layer. |
| Alumina ceramic–oxygen-free copper | 890-940 | Vacuum | ≥150MPa | Surface pre-metallization of ceramics can enhance wettability. |
| Silicon Carbide Ceramic–Titanium Alloy | 920-950 | Vacuum | ≥200MPa | The active elements Ti/Zr promote chemical bonding. |
Powdered vs. Paste Form: Choice of Form
| Form | Advantages | Applicable Process |
|---|---|---|
| Powdered | Uniform composition, excellent flowability, precise metering, and stable storage. | Vacuum brazing pre‑powder, powder spraying, laser cladding, automatic powder feeding |
| Paste-like | Ready-to-use, with precise dotting/printing that won’t run, simplifying application. | Automatic dispensing, screen printing, manual touch-up, coating of complex shapes |
* Titanium-based active brazing alloys are sensitive to oxygen, so brazing must be carried out under high vacuum or in an ultra‑high‑purity argon atmosphere.
Compared with traditional silver-based brazing alloys
| Comparison item | Ti37.5ZrCuNi | Silver-based brazing alloys (such as AgCuTi, etc.) |
|---|---|---|
| Operating Temperature (Long-Term) | ≤800℃ | ≤500℃ |
| Joint strength | ≥300MPa | 200-280MPa |
| Wetting of titanium alloys | ✓ Excellent | Good |
| On ceramic wetting | ✓ Good | Pre-metallization required |
| Cost | Silver-free, lower | High silver content |
Ti37.5ZrCuNi is the material of choice for high-temperature titanium alloys and ceramic brazing, offering a cost-performance ratio far superior to silver-based active brazing fillers.
Typical application areas
Aerospace
Vacuum brazing of titanium alloy engine blades/casings, hot-end components, and missile casings.
Nuclear energy equipment
Nuclear reactor cooling pipelines, radiation-resistant structural joints, and control rod drive mechanisms
Electronic packaging
Ceramic–metal seals (CF/Kovar/Ti), high-power device heat‑sink substrates
Medical device
Titanium implants, orthopedic instruments, brazing of corrosion-resistant devices
Industrial manufacturing
High-temperature furnace fixtures, vacuum equipment sealing connections, thermocouple protection tubes
Precision instruments
X-ray tube rotating anode, vacuum feedthrough, sensor housing
End-to-end testing capability
Each batch of titanium–zirconium–copper–nickel brazing filler metal is tested for major element content, oxygen content, particle size distribution, and fluidity. A Certificate of Analysis (COA) is provided.
Packaging & Delivery
Powder packaging
Double-layer aluminum foil bag or plastic canister, vacuum-sealed + iron drum/plastic drum
Specifications: 1 kg, 5 kg, 25 kg
Creamy packaging
Syringe or plastic container
Refrigerate; shelf life: 6 months.
Delivery time
In stock; ships within 3–7 days after order confirmation.
Customized in paste form: 7–15 days
Batch Traceability
Sample retained for each batch; COA report shipped with the goods.
Quality documents are available.
Free sample
Provide samples
For verification of the brazing process for titanium alloys and ceramics.
Technical Support
Provide brazing recommendations.
Assist customers in resolving issues such as brazing cracks in titanium alloys and poor ceramic wettability.
Chemical composition（wt%）
Grade | Chemical composition | |||
Ti | Zr | Cu | Ni | |
Ti40ZrCuNi | 40 | 20 | 20 | 20 |
BIIP16 | 57 | 13 | 21 | 9 |
Type1510(MBF-5002) | 37.5 | 37.5 | 15 | 10 |
Physical indicators
Grade | Melting temperature range ( °C ) | Brazing temperature ( °C ) | |
Solidus | Liquidus line | ||
Ti40ZrCuNi | 750 | 820 | 850-950 |
BIIP16 | 910 | 920 | 930-960 |
Type1510(MBF-5002) | 805 | 815 | 850-950 |
Application areas
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Address: No.39, Liandong Yougu lnd. Park, Bachelor Street,Changsha City,Hunan Province, China.
