China Customized High Purity Niobium Wire Wholesale Suppliers Factory

High Purity Niobium Wire, 99.95% to 99.99%, ASTM B392 R04200

Chdymetal is based in Baoji, China. We supply niobium filament drawn from niobium rod, and it goes into demanding technical work. Our High Purity Niobium Wire comes at 99.95% (3N5) to 99.99% (4N) niobium content, under ASTM B392 Reactor Grade R04200. Oxygen stays below 150 ppm and tantalum below 1000 ppm. The melting point is 2,468 °C, and the superconducting transition temperature is 9.2 K. Superconducting components are a common use. Lighting and biomedical parts are others. Chemical analysis is part of production, and each piece gets 100% eddy current inspection. Before you order, confirm wire size and purity with our team.

Overview

This refractory metal filament gets drawn from high-purity niobium rod. Oxygen and tantalum stay inside the limits shown in the specifications below. Interstitial elements such as oxygen can pull ductility down. They also change electrical behavior in cryogenic and vacuum work, which is why both limits are kept tight.

The wire is made for buyers who work to a drawing. Composition, grade, and surface condition all need checking before production starts.

Specifications

The values below are taken from the supplied specification data without change.

Product Name	High purity niobium wire
Material	RO4200, RO4210
Standard	ASTM B362
Size	0.3-3mm
Service	Customized OEM, OEM/ODM/Customized, ODM Available
Packing	Wooden box
Delivery time	Stock size will be 1-5 days,normal production time is about 15 days
Payment terms	30%TT in advance,70% balance before shipment
Condition	Annealed / unannealed
Surface	Cold rolling Bright

Wire diameter is not in the supplied specification data. Length is missing too. You will not find spool format there either. The same goes for MOQ. Lead time and packaging are absent as well. For your order, please confirm these details with Chdymetal.

Be used in a wide range of industries.

Electronic devices

Medical implants

Steel industry

Chemical Processing

Aerospace and Defense

Energy and Environmental Engineering

Certification

Key Properties

Physical: This metal works well at high temperature in vacuum or inert atmospheres. Its melting point is 2,468 °C. The density is 8.57 g/cm³.

Chemical: Niobium stands up to nitric acid, hydrochloric acid and organic acids. A stable niobium pentoxide layer forms on the surface. If the surface is scratched, this layer can form again.

Technical: Low impurity scattering is what an RRR over 300 points to. That matters for cryogenic and superconducting parts. The highest transition temperature among the elemental metals is 9.2 K.

Grade Comparison

R04200 is the grade to specify when tantalum content must be tightly limited, as in nuclear applications.

Applications

The fields below use High Purity Niobium Wire.

Superconducting RF cavities and particle accelerators: The wire can go into auxiliary parts of superconducting radio frequency (SRF) cavity assemblies. Energy loss stays lower in those assemblies when surface resistance is low.

High-pressure sodium (HPS) lighting: In HPS lighting, it works as the feed-through conductor for ceramic arc tubes. The wire's thermal expansion is close to polycrystalline alumina's. That closeness helps the seal survive repeated heating and cooling inside street lamps.

Biomedical devices and cathodic protection: Niobium is bio-inert. That trait makes it a candidate for leads in implantable devices like pacemakers and neurostimulators. Impressed Current Cathodic Protection (ICCP) anodes are another use. They come into play when titanium's breakdown potential becomes a limit. For any medical device use, your own testing and regulatory process must confirm it.

Quality Control for High Purity Niobium Wire

For this product, the quality checks cover three areas.

Chemical composition: Oxygen and tantalum are the two that matter most. They drive conductivity and ductility. Both get measured with Glow Discharge Mass Spectrometry (GDMS) or Inert Gas Fusion (IGF).
Surface integrity: Vacuum leaks or voltage breakdown can come from die marks, inclusions and micro-cracks. To catch them, 100% eddy current inspection is used, along with microscopic evaluation.
Mechanical consistency: Winding and weaving need the workability to stay even. That is what tensile strength verification and elongation testing check.

Ask Chdymetal which test reports are included with your order.

Electron beam melting

Forging

Rolling

Machining and forming

Dimension inspection

Packaging

ISO 9001:2015

Purchasing and Supply

When ordering this product, prepare the following:

Grade and purity
Wire size
Oxygen and tantalum limits
RRR target
Surface requirement
Quantity and delivery timing

Shaanxi Chuanghui Daye Metal Material Co., Ltd. (Chdymetal) runs its operation out of Baoji, the city people call China's Titanium Capital. Its founder brings over 30 years in the rare metal business. Niobium is one of the lines it sells. Titanium, tantalum, tungsten, molybdenum, zirconium, this product and nickel products go to the metallurgy, electronics, medical and special steel fields. Buyers in more than 50 countries and regions have taken delivery of these goods. The United States, Germany, South Korea and Singapore are on that list. We also supply the High Purity Niobium Wire in custom sizes to suit your drawing.

Titanium Rod For Sale

FAQ

Q: How do the R04200 and R04210 grades differ?

A: R04200 is Reactor Grade with tantalum capped at 0.1%. R04210 is Commercial Grade and allows a higher tantalum content.

Q: Can this wire be used in air at high temperatures?

A: No. Past 200 °C niobium oxidizes fast. Oxygen embrittlement sets in above 400 °C. Run the wire in a vacuum, or under an inert gas atmosphere.

Q: Why does the RRR value matter?

A: The Residual Resistance Ratio measures electron scattering. Purity of the material is what that tells you. Fewer impurities show up as a higher RRR. Thermal and electrical performance in superconducting magnets depends on it.

Q: Is the wire biocompatible?

A: Niobium is normally treated as bio-inert, which is why medical products are made from it. Will the wire go into a specific implant or a product that touches the body? Your design decides that, along with the testing you run and the rules you must follow.

Q: What are the welding requirements?

A: Use Electron Beam Welding (EBW). TIG welding also works, as long as it happens in a controlled vacuum or a high-purity argon chamber. Less atmospheric gas gets absorbed that way. A weld that absorbs gas can turn brittle.

Q: Which purity levels do you offer, and what sizes?

A: You can get purity from 99.95% (3N5) to 99.99% (4N). Several sizes are available too. Send what you need to info@chdymetal.com. After that, the team checks which options are open for this product.

Contact Us

Let us know the purity you need. We also need the grade. Send the wire size and the quantity. A message to info@chdymetal.com about High Purity Niobium Wire works.