Pure Niobium Wire

Pure Niobium Wire for MRI, Medical and Chemical Use: Multiple Purities and Sizes

Chdymetal draws wire from high-purity niobium rods for MRI, lighting, medical and chemical equipment. Pure Niobium Wire comes in several purities and sizes. Commercial grade is 99.95%, and RRR grades hit 99.99%+. Purity levels are referenced to ASTM B392. A high melting point is one property of the material. It is strong, it superconducts at cryogenic temperatures, and it resists corrosion. Shaanxi Chuanghui Daye Metal Material Co., Ltd. works out of the Baoji High-tech Development Zone. Titanium and tantalum are also on the product list, along with tungsten and other rare metals. Send your grade, diameter and application, and we will quote on that basis.

What Is wire?

Niobium (Nb) sits at atomic number 41. Ingots of this refractory metal usually get refined through electron beam melting. After that comes cold swaging. Fine diameters come later, once drawing is done.

Put this product to work and some jobs need superconductivity at cryogenic temperatures. Others call for resistance to certain acids. A few need bio-inert behavior.

Specifications

No exact diameters or tolerances appear in our product data. Missing as well are lengths, mechanical properties and RRR values. Before you order, talk to Chdymetal about these details.

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Electron beam melting

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Forging

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Rolling 

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Machining and forming

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Dimension inspection

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Packaging

Choosing the Right Grade

Reactor grade (R04200) keeps tantalum below 0.1%. Other impurities with a high cross-section are capped as well. Nuclear and superconducting work usually needs this grade.

The commercial grade is R04210. Tantalum content of about 0.5% is allowed. Chemical processing parts often use this grade when the tighter limit is not needed.

When you inquire about superconducting RF cavities, tell us the RRR value you need. Fewer interstitial impurities usually come with a higher RRR. You get better thermal conductivity at low temperatures as well.

Be used in a wide range of industries.

 

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Electronic devices

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Medical implants

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Steel industry

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Chemical Processing

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Aerospace and Defense

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Energy and Environmental Engineering

Core Properties

• High melting point: In vacuum and high-stress assemblies, the wire keeps its shape.
• Strength and workability: Cold working makes fine diameters possible.
• Superconductivity: Bring it down to cryogenic temperatures. At that point it behaves as a Type II superconductor.
• Corrosion resistance: Sulfuric acid does nothing to it. The same holds for hydrochloric acid and nitric acid.
• Biocompatibility: Living tissue causes no reaction in this metal. Implantable devices are one use that puts it on people's list.

Look at those traits together. This product then becomes a base material for parts that ask a lot of it.

Where You Can Use It

MRI and NMR equipment. This wire is where Nb-Ti and Nb3Sn composite conductors begin. The superconducting magnets built from them are cooled by liquid helium at 4 K.

High-pressure sodium lighting. Here the wire works as the electrode feed-through. Arc tubes made of alumina ceramic expand at a rate close to the wire's own. That helps keep a hermetic seal. Hot, corrosive sodium vapor does not wear it down either.

Medical implants. Pacemaker leads and neurostimulation devices can use niobium wire. That use comes down to two reasons. The metal does not react with living tissue. Corrosion has little hold on it too. Before you specify, check the rules and the material needs for your device.

Aerospace and chemical processing. The material shows up in precision aerospace parts too. Superconducting magnet assemblies use it. So does acid-handling equipment. Pure Niobium Wire fits these jobs because it holds up in a vacuum. Many harsh chemical environments do not bother it either.

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ISO 9001:2015

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ISO 9001:2015

Niobium Alloy Wire Options

The pure metal will not suit every design. In Niobium alloy wire, niobium gets combined with titanium (Nb-Ti). Niobium can be paired with zirconium (Nb-1Zr) as well. A few grades also carry hafnium (C-103). Strength might decide the pick. High-temperature performance can do the same. Aerospace propulsion is one example. Email your alloy requirement to Chdymetal. The team will go through it with you. We also supply This product in custom sizes to suit your drawing. We also supply the Pure Niobium Wire in custom sizes to suit your drawing.

Welding, Handling and Storage of Pure Niobium Wire

Once the heat goes past 200 °C, oxygen and nitrogen attack niobium. Brittleness can set in after that. Weld it under vacuum with an electron beam. TIG is the other way to do it, run inside an inert chamber with argon or helium in it.

Keep the wire somewhere cool and dry. Put gloves on each time you touch it. Grease should not come near the surface. Oil and fingerprints need to stay off it too. Leftover organic residue can leave carbon on the surface when the part is heat treated later. The metal pays the price for that.

Purchasing and Customization

Titanium, tantalum, niobium and other rare metal products come from Chdymetal. Tungsten and molybdenum sit in the lineup as well, plus zirconium and nickel. Customers in metallurgy buy from the company. So do the electronics, medical and special steel fields.

Have these details ready. It makes your quote come back faster:

• Grade (reactor or commercial) and target purity
• RRR value, if needed
• Diameter and quantity
• Where the part goes, and any welding or heat treatment you have in mind

Include a few things in your inquiry. Ask how long the lead time runs. Check the minimum order quantity too, and the paperwork that comes with it.

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Diameter	Tolerance	Roundness
0.2-0.5	±0.007	0.005
0.5-1.0	±0.01	0.01
1.0-1.5	±0.02	0.02
1.5-3.0	±0.03	0.03

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FAQ

Q: What sets reactor grade apart from commercial grade?

A: Reactor grade (R04200) keeps tantalum below 0.1%. Other impurities with a high cross-section get capped as well. Commercial grade (R04210) allows about 0.5% tantalum.

Q: Can the wire be welded?

A: Yes, it can be done. The atmosphere is the part you have to watch closely. One route is electron beam welding inside a vacuum. The other is TIG welding in argon or helium. Above 200 °C, oxygen and nitrogen will make the metal brittle.

Q: Why specify RRR in an order?

A: Two things show up in the RRR number: how pure the material is and how well it conducts heat at low temperature. Superconducting RF cavities are where that number matters most. Send us your inquiry and tell us the value your project needs.

Q: Does the wire resist all acids?

A: No. Sulfuric acid leaves it alone. So do hydrochloric acid and nitric acid. Hydrofluoric acid is a different story. Any solution that holds fluorides will attack it.

Q: How should I store it?

A: Keep it in a cool, dry place. Grease should never touch the surface. Oil and fingerprints do the same damage. Before you handle it, put on gloves. Once heat treatment starts, organic residue can harm the metal.

Q: Can I order other purity levels and pack sizes?

A: Yes. Chdymetal supplies various purities and sizes. Email your grade, diameter and quantity for a quote.

Contact Us

Send your Pure Niobium Wire grade, diameter, quantity and application to info@chdymetal.com. Chdymetal will review the details and reply with a quote.