Certified Niobium Wire 99.95% – ASTM B392 Pure Nb Wire Supplier

Description

Certified Niobium Wire 99.95% – ASTM B392 Pure Nb Wire Supplier

🌟 Introduction

Niobium wire is a critical material in modern industries, valued for its unique physical, chemical, and superconducting properties. Our Certified Niobium Wire 99.95% is manufactured under ASTM B392 standards and corresponds to UNS R04210, which is the commercially pure grade of niobium. With a guaranteed purity level of 99.95%, this wire offers excellent performance in demanding environments such as vacuum systems, electronics, evaporation sources, superconductivity research, jewelry production, and medical applications.

Niobium wire is increasingly sought after in global markets because it combines high purity, corrosion resistance, excellent workability, and biocompatibility. Whether you are working in semiconductor fabrication, metallurgical research, aerospace technology, or jewelry design, this wire ensures consistent results and trusted reliability.

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🔎 Why Choose it?

The difference between ordinary metallic wires and 99.95% Niobium Wire lies in the stringent purity control. At this purity level, trace impurities such as oxygen, nitrogen, and hydrogen are minimized, ensuring stable performance under extreme conditions.

✔ High Purity (99.95%) – Certified composition with low interstitial impurities.
✔ ASTM B392 Standard – Manufactured in strict compliance with international material standards.
✔ Versatility – Widely used in vacuum evaporation, thin-film coating, chemical equipment, superconductivity research, and jewelry applications.
✔ Biocompatibility – Hypoallergenic and safe for contact with human skin, making it ideal for medical and decorative uses.
✔ High-Temperature Resistance – With a melting point of 2468 °C, niobium wire remains stable in extreme thermal environments.

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⚙️ Standards & Grades (ASTM B392, UNS R04210)

Our niobium wire complies with ASTM B392, the internationally recognized standard for niobium rods, bars, and wires.

• Standard: ASTM B392

• Grade: Commercially Pure Niobium (UNS R04210)

• Alternative Grade: Reactor Grade Niobium (UNS R04200) available upon request

• Purity: 99.95% minimum (Nb ≥ 999.5 g/kg)

• Manufacturing Method: Electron-beam melting and forging, followed by wire drawing and vacuum annealing.

This ensures customers receive wire that meets both mechanical specifications and chemical requirements, making it suitable for industrial, laboratory, and research purposes.

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📊 Chemical Composition

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🔬 Physical & Mechanical Properties

• Density: 8.57 g/cm³

• Melting Point: 2468 °C

• Boiling Point: ~4744 °C

• Electrical Resistivity: 15 μΩ·cm at 20 °C

• Thermal Conductivity: ~54 W/m·K at 20 °C

• Tensile Strength: 200–400 MPa (depending on temper)

• Elongation: ≥ 25% (annealed condition)

• Superconducting Transition Temperature (Tc): ~9.25 K

These properties make niobium wire ideal for extreme temperature applications, superconductivity research, and electronic components.

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🏭 Manufacturing Process & Surface Condition

The production of ASTM B392 Niobium Wire involves multiple carefully controlled steps:

1. Raw Material Selection – High-purity niobium ingots are refined using electron-beam melting.

2. Forging and Rolling – The ingots are processed into bars, then drawn into wires.

3. Wire Drawing – Precision cold drawing achieves desired diameters (0.1 mm to 3.0 mm).

4. Vacuum Annealing – Removes internal stresses and ensures ductility.

5. Surface Treatment – Wires can be delivered in bright, polished, or annealed finishes.

Available Forms:

• Straight wire cut to length

• Coiled wire on spools or reels

• Custom geometries upon request

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📏 Available Sizes & Customization

We supply Niobium Wire 99.95% in a wide range of diameters:

• Standard Range: 0.1 mm – 3.0 mm

• Tolerance: ±0.01 mm (depending on diameter)

• Surface Options: Bright polished, vacuum annealed, matte finish

• Packaging: Spools, coils, or straight rods up to 1 meter length

• Custom Orders: Available for larger diameters or specific coil lengths

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🌐 Applications

Niobium wire is highly versatile. Typical applications include:

🔹 Vacuum Evaporation & Thin Film Deposition

Used as an evaporation filament and support wire in PVD and CVD processes.

🔹 Semiconductor & Electronics

Niobium wire plays a role in microelectronic devices, sputtering targets, and contact materials.

🔹 Superconductivity Research

Due to its transition temperature of 9.25 K, Pure Niobium Wire is essential for superconducting magnets, accelerator cavities, and quantum devices.

🔹 Medical & Jewelry Applications

• Medical: Biocompatible, safe for surgical tools and implants.

• Jewelry: Popular for body piercings and decorative jewelry because it can be anodized to vibrant colors.

🔹 Chemical & Metallurgical Applications

In high-temperature and corrosive environments, ASTM B392 Niobium Wire is used for fasteners, heating elements, and furnace components.

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🧪 Quality Control & Certification

Every spool of Certified Niobium Wire 99.95% undergoes strict testing:

• Chemical Composition Analysis: GDMS / ICP-OES

• Gas Element Analysis: Oxygen, Nitrogen, Hydrogen testing

• Mechanical Testing: Tensile, hardness, elongation

• Dimensional Check: Diameter, roundness, surface finish

• Certification: Supplied with mill test certificate (MTC) in accordance with ASTM B392

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📦 Packaging & Delivery

To ensure quality during storage and transportation:

• Vacuum sealed packaging with desiccant

• Anti-static spools for fine wire

• Shockproof outer cartons and wooden cases

• Worldwide delivery with fast lead times

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❓ Frequently Asked Questions (FAQ)

Q1: What is the purity of your niobium wire?
A: Our niobium wire is certified to 99.95% minimum purity, with low levels of oxygen, nitrogen, and other impurities.

Q2: Which standards do you follow?
A: We produce in compliance with ASTM B392 and supply UNS R04210 (commercial purity). Reactor-grade R04200 is also available.

Q3: Can niobium wire be used in jewelry?
A: Yes, Pure Niobium Wire is hypoallergenic and anodizable, making it safe for body contact and popular in jewelry.

Q4: Do you provide custom sizes?
A: Yes, we can supply diameters from 0.1 mm to 3.0 mm or custom requirements.

Q5: Is niobium wire superconductive?
A: Yes, Niobium Wire has a superconducting transition temperature around 9.25 K, widely used in research applications.

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🏆 Conclusion

The demand for High Purity Niobium Wire 99.95% continues to rise across industries due to its versatility, purity, and unique properties. As a Certified Supplier, we guarantee compliance with ASTM B392 standards, ensuring that each spool of Niobium Wire meets the highest quality benchmarks.

Whether you require niobium wire for vacuum evaporation, superconducting research, semiconductor fabrication, or jewelry design, we are your trusted source for reliable supply, competitive pricing, and professional support.

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🔗 Related Products on Our Website:

• Niobium Plate – High Purity Nb Sheet for Industrial Applications

• Molybdenum Rod – High Strength Refractory Metal Bar

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📞 Contact Us

📧 Email: sales@niticu.com
📞 Phone / WhatsApp / WeChat: +86 13335373172
🏭 Factory: Baotai Road Industrial Park, High-tech Zone, Baoji City, Shaanxi, China
🌐 Website: https://niticu.com

📩 Contact us now for pricing, samples, and expert technical support — we respond within 24 hours.