Niobium Tin Wire

1.The current-carrying capacity at high fields is far superior to that of niobium-titanium.

Our Niobium Tin Wire can achieve a critical current density of 2500 A/mm² at 12 Tesla and 4.2K. However, niobium-titanium wire will sharply decline above 10 Tesla. This means that if your magnet design exceeds 10 Tesla, niobium-tin is currently the only stable low-temperature superconducting material and there is no alternative.

 

2. Extremely low AC loss, suitable for long-term continuous operation

The core wire of the bronze helical wire is completely isolated by the copper-tin matrix. No coupling current is generated during magnetic field changes, and the AC loss is more than 40% lower than that of the internal tin method. For NMR equipment that requires 24-hour uninterrupted operation, this directly means less liquid helium evaporation and lower operating costs.

 

3. High mechanical strength, and not prone to deformation after winding

The tensile strength of the wire exceeds 600 MPa. Even when wound into a coil, it can maintain a stable shape under strong electromagnetic force. It is particularly suitable for experimental magnets that need frequent loading and unloading, as it will not suffer from fatigue failure due to repeated disassembly and assembly.

 

4. Batch consistency is excellent, with deviations controlled within ±3%.

The production is carried out on our own production lines throughout the process. The critical current deviation for each batch is ≤ ±3%, while the off-site outsourcing mode in the industry usually exceeds ±8%. This is crucial for calculating the safety margin of the magnets - the smaller the deviation, the more precise your design will be, and you won't need to leave too much redundancy.

 

1.Nuclear Magnetic Resonance Spectrometer (NMR) - Essential for magnetic fields above 20T

High-field NMR with 900MHz or higher requires a 21–23 Tesla magnetic field to obtain high-resolution spectra. Nitinol loses its performance above 10T and simply cannot meet the requirements. Our Niobium Tin Wire is the only low-temperature superconducting option for high-field NMR, and due to its low AC loss, it can significantly reduce helium consumption, which is something the internal tin wire cannot achieve.

 

2. Particle accelerators and nuclear fusion devices - Niobium-tin is indispensable for above 12T

The magnets for CERN's next-generation accelerator and ITER's fusion reactor both need to operate at 12–16 teslas. Our RRP process produces wire cores as thin as 35 μm, with strong flux pinning capability and slower current attenuation at high fields. It has been adopted by several accelerator upgrade projects.

 

3. High-field magnets for universities and research institutes

Experiments such as material characterization and quantum computing require a magnetic field environment of 15–23T. Our bronze helical wire has high mechanical strength and low AC loss, making it particularly suitable for scientific research magnets that need to operate continuously for a long time. After winding, it is not prone to deformation and has low maintenance costs.

 

China Super Tech Co., Ltd. not only sells standard products, but also offers a full-chain customized solution from selection to delivery. The core advantage lies in its own production lines throughout the process, and the process parameters can be adjusted in real time according to your needs - something that traders cannot achieve.

 

1.Wire diameter specification - Customized according to your magnet design

Supports wire diameters ranging from 0.5 to 3.0mm, with core wire diameters adjustable from 20 to 50μm. We have our own drawing line and do not need outsourcing. Samples can be delivered as soon as 7 days.

 

2. Process Matching - All three processes are self-produced. Recommended based on magnetic field requirements.

The bronze method, RRP method, and internal tin method can all be produced independently. You can quickly switch the recommended process according to your magnetic field requirements, without being restricted by the production schedules of external suppliers.

 

3. Heat treatment optimization - Customized annealing curves based on your magnet design

We have dedicated heat treatment furnaces with temperature control accuracy of ±1°C. We can customize the annealing temperature and time according to your magnet design, rather than producing in fixed batches.

 

4. Sample production - Minimum order quantity is 100 meters, with a complete test report included.

Orders starting from 100 meters can be placed. We have our own testing equipment and will deliver within 3 weeks along with a complete critical current test report, allowing you to verify the performance before making bulk purchases.

 

5. Mass Production - Monthly Production Capacity of 500 km, Supports Batch Delivery

Completely self-owned production line, monthly production capacity of 500 km, supports batch delivery according to project progress, and delivery time is fully controllable.

 

The traders can only resell standard products. If there is a problem, it needs to be relayed through multiple layers. We directly connect with the production line. The process parameters can be adjusted in real time. If there is a problem, we respond within 24 hours. There is no need to wait for the intermediaries to relay the information.

 

Parameter	Specification
Material	Nb₃Sn (Niobium-Tin Superconductor)
Manufacturing Process	Bronze Route / Internal Tin Process
Wire Type	Multifilament Superconducting Wire
Diameter Range	0.3 mm – 2.0 mm
Filament Count	Customized (Hundreds to Thousands)
Copper Stabilizer	High-Purity OFHC Copper
Critical Temperature (Tc)	Approx. 18 K
Upper Critical Field (Bc2)	Up to 25–30 T
Critical Current Density (Jc)	Customized According to Application
Operating Temperature	4.2 K and Below
Conductor Shape	Round / Rectangular / Customized
Surface Condition	Bright, Clean, Defect-Free
Standard Length	Customized
Quality Documentation	Available Upon Request

 

 

 

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