Looking for high-quality polished niobium bar rod for your specialized applications? You've come to the right place. Our premium niobium rods combine exceptional purity with superior surface finish. Each rod undergoes meticulous polishing to achieve the perfect balance of functionality and aesthetics. Whether you need materials for medical devices, electronics, or aerospace applications, our polished niobium bar rod delivers outstanding performance. With over 99.9% purity and precise dimensional tolerances, these rods meet the most demanding industry standards.
Our niobium rods offer remarkable advantages for your projects. The polished surface finish ensures excellent corrosion resistance and biocompatibility. You'll appreciate the material's exceptional ductility and workability. The high melting point makes these rods perfect for high-temperature applications. Plus, niobium's natural superconducting properties open doors to advanced technological uses.
| Property | Specification |
|---|---|
| Purity | Nb >99.9% |
| Diameter Range | 1-50 mm |
| Maximum Length | 3000 mm |
| Surface Finish | Polished |
| Density | 8.57 g/cm³ |
| Melting Point | 2,477°C |
| Tensile Strength | 200-350 MPa |
| Electrical Resistivity | 15.2 μΩ·cm |
| Certificate | ISO9001:2015 |
| Delivery time | within 7-15days according to your quantity |
| Payment terms | 50%TT in advance, 50% balance payment before shipment according to the actual weight |
Chemical Composition
|
Material |
Main elements(%) |
Impurities (Maximum %) |
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|
Nb |
Fe |
Si |
Ni |
W |
Mo |
Ti |
Ta |
O |
C |
H |
N |
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RO4200 |
Remainder |
0.004 |
0.004 |
0.002 |
0.005 |
0.005 |
0.002 |
0.07 |
0.015 |
0.0040 |
0.0015 |
0.003 |
|
RO4210 |
Remainder |
0.01 |
0.01 |
0.005 |
0.02 |
0.01 |
0.004 |
0.10 |
0.02 |
0.01 |
0.0015 |
0.01 |
Niobium Round Bar Mechanical Properties
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Grade |
Tensile strength psi(MPa), ≥ |
Yield strength δ0.2, psi (MPa),≥ |
Elongation in 1"/2" gage length, %, ≥ |
|
|
>=0.010 |
<0.010 |
|||
|
RO4200 RO4210 |
18000 (125) |
12000 (85) |
25 |
20 |
We stock various niobium grades to meet your specific requirements. Our commercial-grade niobium offers excellent value for standard applications. For critical aerospace and medical uses, we provide ultra-high purity grades. Custom alloy compositions are available upon request.
Our manufacturing process ensures consistent quality throughout. We start with premium niobium feedstock and employ advanced melting techniques. The rods undergo precision machining followed by our proprietary polishing process. Each step includes rigorous quality checks to maintain our high standards.
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These versatile rods serve multiple industries effectively. Medical professionals rely on them for implants and surgical instruments due to biocompatibility. Electronics manufacturers use them in capacitors and superconducting applications. The aerospace industry values their high-temperature performance in jet engines and turbines. Research facilities appreciate their unique properties for experimental equipment.
Electronic devices
Medical implants
Steel industry
Chemical Processing
Aerospace and Defense
Energy and Environmental Engineering
We maintain tight dimensional tolerances across our entire range. Diameter tolerances typically fall within ±0.05mm for standard sizes. Length tolerances are held to ±1mm for most applications. Custom tolerances are available for specialized requirements.
The mirror-like polished finish isn't just for appearance. It significantly reduces surface contamination and improves cleanability. The smooth surface also enhances corrosion resistance in challenging environments. Our polished niobium bar rod maintains these properties throughout its service life.
Every batch undergoes comprehensive testing before shipment. We verify chemical composition using advanced spectroscopic analysis. Mechanical properties are tested according to international standards. Surface quality inspection ensures consistent finish across all products.
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Need something specific? We excel at custom solutions. Our engineering team works with you to develop specialized dimensions or alloy compositions. We can modify surface treatments or provide additional machining services. Your unique requirements drive our customization capabilities.
We protect your investment with careful packaging. Individual rods are wrapped in protective film to preserve the polished surface. Sturdy wooden crates ensure safe transit for larger orders. We ship worldwide and handle all export documentation professionally.

With over 30 years of experience in rare metals, we understand your needs. Our location in China's "Titanium Capital" gives us access to premium raw materials. We've successfully served customers in more than 50 countries worldwide. Our commitment to quality and customer service sets us apart from competitors.

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Q: What's the minimum order quantity?
A: We accommodate orders from single pieces to large quantities.
Q: Can you provide material certificates?
A: Yes, we supply complete mill test certificates with every shipment.
Q: How long does delivery take?
A: Standard products ship within 7-14 days. Custom orders may require additional time.
Q: Do you offer technical support?
A: Absolutely! Our experienced team provides comprehensive technical assistance.
Q: What payment terms do you accept?
A: We offer flexible payment options including T/T, L/C, and other arrangements.
Ready to discuss your polished niobium bar rod requirements? Our knowledgeable team is here to help you find the perfect solution. We provide detailed quotations and technical specifications for your projects.
Contact us today at info@chdymetal.com to get started. Let us show you why we're the trusted choice for premium niobium products worldwide.

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