Niobium Bar & Rod
At Sizen Limited, we supply high-purity niobium bars and niobium rods to industries worldwide. With over 10 years of experience, we are known for providing reliable, high-quality materials that meet the needs of sectors like aerospace, electronics, and manufacturing.
Our niobium bars and rods are made from top-quality materials, offering excellent strength, resistance to corrosion, and reliability in high-temperature environments. We can handle orders of all sizes and provide custom solutions to fit your exact needs.
Partner with Sizen Limited for your niobium supply and experience the difference in quality and service. Request a quote today for your custom niobium order.
Our Niobium Bar/Rod Specifications
Niobium Bar/Rod Information
- Material: Pure Niobium
- Standards: ASTM B392, ASTM B655/B655M
- Grade: R04200-1, R04210-2, R04251-3, R04261-4, R04295 (ASTM B655/B655M)
- Purity: Nb >99.95%, >99.99%
- Diameter: 0.125" - 5"
- Density: 8.57 g/cm³ @20°C
- Melting Point: 2477 °C
- Boiling Point: 4742°C
- Thermal Conductivity: 0.537 W/cm/K @ 298.2 K
- Electrical Resistivity: 12.5 microhm-cm @ 0 °C
Niobium Bar/Rod Dimensions and Tolerance
| Diameter, Inch (mm) | Tolerance, +/-Inch (mm) |
|---|---|
| 0.090–0.125 (2.29~3.18) | 0.0020 (0.051) |
| 0.125–0.187 (3.18–4.75) | 0.0030 (0.076) |
| 0.187–0.375 (4.75–9.53) | 0.0040 (0.102) |
| 0.375–0.500 (9.53–12.70) | 0.0050 (0.127) |
| 0.500–0.625 (12.70–15.90) | 0.0070 (0.178) |
| 0.625–0.750 (15.90–19.10) | 0.0080 (0.203) |
| 0.750–1.000 (19.10–25.40) | 0.0100 (0.254) |
| 1.000–1.500 (25.40–38.10) | 0.0150 (0.381) |
| 1.500–2.000 (38.10–50.80) | 0.0200 (0.508) |
| 2.000–2.500 (50.80–63.50) | 0.0300 (0.762) |
Niobium Bar Mechanical Properties of Annealed Condition (Diameter 0.125 inch (3.18mm) - 2.5 inch (63.5mm))
| Grade | Ultimate tensile strength, min., psi (MPa) |
Yield strength, 0.2% Residual deformation, min., psi (MPa) |
Elongation in 1″ (25.4mm) Gage Length, min., ％ |
|---|---|---|---|
| RO4200-1/RO4210-2 | 18000 (125) | 10500 (73) | 25 |
| RO4251-3/RO4261-4 | 28000 (195) | 18000 (125) | 20 |
| ASTM B655/B655M | |||
|---|---|---|---|
| ASTM B655/B655M | Ultimate tensile strength, min., psi (MPa) |
Yield strength, 0.2% Residual deformation, min., psi (MPa) |
Elongation in 1″ (25.4mm) Gage Length, min., ％ |
| Diameter ≤0.050" (1.27mm) Room temperature |
56000 (385) | 40000 (275) | 20 |
| Diameter ≤0.050" (1.27mm) 2000±25℉ (1100±15℃) |
21000 (145) | 16000 (110) | 20 |
| Diameter ≥0.051" (1.27mm) Room temperature |
54000 (370) | 38000 (260) | 20 |
| Diameter ≥0.051" (1.27mm) 2000±25℉ (1100±15℃) |
21000 (145) | 16000 (110) | 20 |
Why Choose SIZEN as Your Niobium Bar Supplier?
Uncompromising Quality
99.95% pure niobium for superior performance.
Customized Solutions
Tailored for specific project needs.
Strict Quality Control
Every batch tested for purity and precision.
Fewer Defects, More Efficiency
Smoother production and lower costs.
Reliable, On-Time Delivery
On-time delivery with efficient processing.
5 MAIN REASONS TO CHOOSE US
1
Uncompromising Quality
We offer niobium bars made from 99.95% pure niobium, ensuring exceptional conductivity, corrosion resistance, and impressive mechanical strength. Thanks to our advanced manufacturing methods, every batch meets the highest standards for consistency and performance.
2
Customized Solutions
Every project is unique, and we make sure our niobium bars fit your exact requirements. Whether you need specific diameters, lengths, or custom specifications, we tailor our products to your application.
3
Strict Quality Control
At SIZEN, quality is non-negotiable. Every niobium bar goes through rigorous testing to ensure it meets your exact specifications. From material purity to physical properties, we ensure that our products are of the highest quality.
4
More Efficiency, Fewer Defects
We've optimized our production processes to reduce defects, resulting in higher efficiency and fewer production delays. With our high-quality niobium bars, you can expect smoother operations, less waste, and lower costs.
5
Reliable, On-Time Delivery
Our streamlined production process and reliable logistics ensure your niobium bars are delivered on schedule, so you can keep your projects moving forward without unnecessary delays.
Unique Properties of Niobium Bar and Rod
Outstanding Strength
Niobium bars and rods offer incredible strength, even under pressure. This makes them perfect for high-stress environments like aerospace, automotive, and heavy machinery where durability is key.
Superior Corrosion Resistance
Niobium bars and rods are highly resistant to corrosion, making them perfect for industries like chemical processing, marine, and nuclear. They can stand up to harsh environments without losing their integrity.
Customizable and Versatile
The bar and rod form of niobium can be easily tailored into various sizes and shapes, making it adaptable for many applications, from electronics to manufacturing. Precision is always within reach.
Excellent Electrical Conductivity
Niobium bars and rods maintain good electrical conductivity, which is essential for applications in electronics and electrical components. They offer reliable performance, ensuring your devices and systems operate efficiently.
Unmatched Heat Resistance
Niobium retains its strength and structure even in extreme heat. In bar and rod form, it's ideal for high-temperature environments such as reactors, furnaces, and aerospace components, ensuring long-lasting performance.
Get a Quote for High-Purity Niobium Metal
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Manufacturing Process of Niobium Bars
The process begins with extracting high-purity niobium from its ores. We use advanced chemical methods to ensure the niobium we provide is of the highest quality, giving you reliable performance in every application.
Once extracted, the niobium is transformed into fine metal powder. This powder serves as the foundation for our niobium bars, ensuring consistency and quality in every batch we produce.
The niobium powder is compacted into billets and heated in a controlled environment in a process called sintering. This step fuses the powder particles into a solid structure, enhancing the material's strength and preparing it for the next stage.
Next, we heat the sintered billets to high temperatures and roll them into bars. This hot rolling or forging process improves the bars' strength, flexibility, and dimensional precision, setting the stage for high-performance niobium bars.
To boost the bars' mechanical properties, we carefully heat treat them. This step increases the tensile strength and ensures the niobium bars can perform under high-stress and extreme conditions.
After heat treatment, we refine and polish the bars to achieve a smooth, flawless surface. This enhances the bars’ appearance and ensures they perform consistently and reliably in demanding applications.
We don't compromise on quality. Every niobium bar undergoes strict testing to ensure it meets the highest standards. From dimensional checks to mechanical property assessments, we ensure that each bar is up to par for your toughest projects.
Once the bars pass all quality checks, we package them with care to prevent any damage during transport. Your niobium bars will arrive in perfect condition, ready to be put to work in your applications.
Mixing Machine
Sintering Furnace
Die Forging
Annealing Furnace
Cold Rolling Mill
Straightening Machine
CNC Deep Hole Drilling Machine
Grinding Machine
Wire Drawing Equipment
Wire Cutting Machine
Handheld XRF Analyzer
Scanning Electron Microscope
Niobium Bar Applications: Versatility Across Industries
Aerospace and Defense
Niobium bars are essential in aerospace components, including rocket nozzles and turbine blades. Their ability to withstand extreme heat and pressure makes them ideal for high-performance applications in aviation and space exploration.
Electronics and Semiconductors
Niobium bars are ideal for electronic components, including capacitors and semiconductors. Their excellent conductivity and resistance to corrosion make them a crucial part of high-performance devices, ensuring long-lasting reliability.
Medical Devices
Due to its biocompatibility, niobium is widely used in medical implants and surgical instruments. Its non-reactivity ensures safety and longevity, making it an ideal material for devices that come into contact with the human body.
Chemical Processing
Niobium bars are highly resistant to corrosion, making them a perfect choice for reactors, heat exchangers, and other critical equipment used in chemical processing. They provide durability in aggressive chemical environments, ensuring reliable performance.
Nuclear Technology
Niobium bars are used in nuclear reactors, especially in fuel rods and cladding materials, thanks to their high resistance to radiation damage and heat. They play a vital role in ensuring the safe and efficient operation of nuclear power plants.
Tooling and Manufacturing
Niobium bars are highly valued in the tooling and manufacturing industries for their strength and durability. They are commonly used to produce high-performance molds and cutting tools that withstand heavy wear and stress.
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