Description
Ordering Specifications
This listing covers 99.95% niobium granules. Send the required particle dimensions or size range, shape, total weight and packaging. Include oxygen, carbon and other impurity limits where specified by your process, together with inspection requirements. Confirm particle dimensions and acceptance criteria before ordering.
🧪 Product Title
High Purity Niobium Granules 99.95% – Polished Niobium Metal Particles for Vacuum Melting, Research & Alloy Production
📄 Product Description
Niobium granules are high-purity metallic particles produced from refined niobium (Nb) with a guaranteed minimum purity of 99.95%, engineered for applications in vacuum melting, laboratory research, alloy manufacturing, and electronic materials. These granules are made by precision wire cutting or fragmentation (cracking) and are then mechanically polished to deliver a smooth, oxidation-free metallic surface.
Standard sizes include 3×3mm and 6×6mm, with custom dimensions available on request. The consistent particle size, low gas content, and excellent corrosion resistance make these polished niobium granules ideal for sensitive high-temperature and high-purity environments.
Our niobium granules are manufactured with a minimum purity of 99.95%, meeting the standards expected in advanced scientific applications and research. For reference, the base specification of niobium materials is described under the ASTM B393 standard
⚗️ Chemical Composition
All granules are analyzed using ICP-OES, LECO, and inert gas fusion methods to ensure elemental consistency and trace-level impurity control.
| Element | Symbol | Typical Content (wt%) | Max. Limit (wt%) |
|---|---|---|---|
| Niobium | Nb | ≥ 99.95% | — |
| Tantalum | Ta | 0.005–0.01% | ≤ 0.01% |
| Iron | Fe | < 0.005% | ≤ 0.01% |
| Silicon | Si | < 0.003% | ≤ 0.005% |
| Carbon | C | < 0.003% | ≤ 0.005% |
| Oxygen | O | < 0.015% | ≤ 0.03% |
| Hydrogen | H | < 0.0005% | ≤ 0.001% |
| Nitrogen | N | < 0.002% | ≤ 0.005% |
| Total Metallic Impurities | — | — | ≤ 0.01% (combined) |
📌 Note: COA and third-party test reports available upon request.
🧬 Physical Properties
| Property | Value |
|---|---|
| Appearance | Silver-gray polished particles |
| Density | 8.57 g/cm³ |
| Melting Point | 2477°C |
| Boiling Point | 4744°C |
| Crystal Structure | Body-Centered Cubic (BCC) |
| Hardness | ~110 HB (annealed) |
| Electrical Resistivity | 15–25 µΩ·cm |
| Thermal Conductivity | 53.7 W/m·K (25°C) |
📐 Sizes & Customization
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Standard particle sizes: 3×3mm, 6×6mm
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Production method: Wire cutting or cracking
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Shape: Cuboidal or irregular, based on method
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Customization: Available (size, shape, packaging, labeling)
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Dimensional tolerance: ±0.2mm standard
🌟 Key Features
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🔬 High Purity (99.95%) niobium for clean processing and critical experiments
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🧪 Low interstitial contamination: O, C, N, and H well below max levels
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⚙️ Highly uniform particles for alloying and dosing
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🧲 Excellent thermal and electrical performance
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🌍 RoHS compliant, REACH-ready, environmentally stable
🎯 Applications
Niobium granules are widely used in:
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Vacuum arc remelting (VAR) and electron beam melting (EBM)
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Superalloy production, such as Nb-Ti and Nb-Zr systems
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Capacitor-grade material preparation and sputtering targets
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Scientific laboratories for density demonstrations and elemental education
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Custom metal alloys in aerospace and nuclear industries
🔬 Niobium Granules in Advanced Applications
Beyond traditional metallurgy, niobium granules are increasingly utilized in high-value domains such as superalloy development, where they contribute to enhanced high-temperature strength, oxidation resistance, and creep performance. In thin film deposition, they serve as feedstock for sputtering targets used in semiconductors, solar cells, and optical coatings. Their clean surface and tightly controlled impurities make them essential for industries where material reliability is non-negotiable.
📦 Packaging & Delivery
| Item | Details |
|---|---|
| Inner Packaging | Vacuum-sealed aluminum foil bags |
| Protection | Desiccants, anti-static options available |
| Outer Packaging | Export-grade cartons with foam inserts |
| Labeling | Custom logo, specs, barcode, QR available |
| Lead Time | Stock: 1–3 business days; Custom: 5–7 days |
| Documentation | COA, MSDS, RoHS, C/O, and testing reports |
🏭 About the Manufacturer
Shaanxi Nickel Titanium Copper Metal Co., Ltd. is a professional supplier of niobium granules and other high-purity metal materials. Based in Baoji, China’s Titanium Valley, we serve global customers across 20+ countries in sectors such as R&D, aerospace, and materials science.
📧 Email: sales@niticu.com
🌐 Website: https://niticu.com
📞 Phone / WhatsApp / WeChat: +86 13335373172
📍 Address: Baotai Road Industrial Park, High-tech Zone, Baoji City, Shaanxi Province, China
📩 Contact us today for samples, pricing, and technical consultation – we respond within 24 hours.
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