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Niobium Chunk

High Purity Nb Chunk
CAS 7440-03-1

Product Product Code Request Quote
(2N) 99% Niobium Chunk NB-M-02-CK Request Quote
(3N) 99.9% Niobium Chunk NB-M-03-CK Request Quote
(4N) 99.99% Niobium Chunk NB-M-04-CK Request Quote
(5N) 99.999% Niobium Chunk NB-M-05-CK Request Quote

Formula CAS No. PubChem SID PubChem CID MDL No. EC No Beilstein
Re. No.
Nb 7440-03-1 24855926 23936 MFCD00011126 231-113-5 N/A [Nb] InChI=1S/Nb GUCVJGMIXFAOAE-UHFFFAOYSA-N

PROPERTIES Mol. Wt. Appearance Density Tensile Strength Melting Point Boiling Point Thermal Conductivity Electrical Resistivity Eletronegativity Specific Heat Heat of Vaporization Heat of Fusion MSDS
92.90 Silvery 8.57 gm/cc N/A 2468 °C 4742 °C

0.537 W/cm/K @ 298.2 K

12.5 microhm-cm @ 0°C

1.6 Paulings

0.064 Cal/g/K @ 25°C N/A

6.5 Cal/gm mole

Safety Data Sheet

High Purity ChunkAmerican Elements specializes in producing high purity Niobium Chunks are produced using crystallization, solid state and other ultra high purification processes such as sublimation. Standard Chunk pieces are amorphous uniform pieces ranging in size from 5-15 mm. American Elements specializes in producing custom compositions for commercial and research applications and for new proprietary technologies. American Elements also casts any of the rare earth metals and most other advanced materials into granules, rod, bar or plate form, as well as other machined shapes and through other processes such as nanoparticles and in the form of solutions and organometallics. We also produce Niobium as rod, pellets, powder, pieces, disc, ingot, wire, and in compound forms, such as oxide. Other shapes are available by request.

Niobium(Nb) atomic and molecular weight, atomic number and elemental symbolNiobium (atomic symbol: Nb, atomic number: 41) is a Block D, Group 5, Period 5 element with an atomic weight of 92.90638. Niobium Bohr ModelThe number of electrons in each of niobium's shells is 2, 8, 18, 12, 1 and its electron configuration is [Kr] 4d4 5s1. The niobium atom has a radius of 146 pm and a Van der Waals radius of 207 pm. Niobium was discovered by Charles Hatchett in 1801 and first isolated by Christian Wilhelm Blomstrand in 1864. Elemental NiobiumIn its elemental form, niobium has a gray metallic appearance. Niobium has the largest magnetic penetration depth of any element and is one of three elemental type-II superconductors (along with vanadium and technetium). Niobium is found in the minerals pyrochlore, its main commercial source, and columbite. The word Niobium originates from Niobe, daughter of mythical Greek king Tantalus. For more information on niobium, including properties, safety data, research, and American Elements' catalog of niobium products, visit the Niobium element page.


Niobium Metal Niobium Titanium Alloy Niobium 2-Ethylhexanoate Cobalt Niobium Zirconium Alloy Niobium Fluoride
Niobium Nanoparticles Niobium Pellets Niobium Chloride Niobium Powder Niobium Foil
Niobium Sulfide Niobium Oxide Niobium Sputtering Target Niobium Oxide Pellets Niobium Wire
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Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Shipping documentation includes a Certificate of Analysis and Material Safety Data Sheet (MSDS). Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes.

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Recent Research & Development for Niobium<

  • First-Principles Study of the Nature of Niobium Sulfide Catalyst for Hydrodesulfurization in Hydrotreating Conditions. Yosslen Aray, Dick Zambrano, Mauricio H. Cornejo, Eduardo V. Ludeña, Peter Iza, Alba B. Vidal, David S. Coll, Doris M. Jímenez, Francisco Henriquez, and Cecilia Paredes. J. Phys. Chem. C: November 7, 2014
  • Sulfated Mesoporous Niobium Oxide Catalyzed 5-Hydroxymethylfurfural Formation from Sugars. Ernest Lau Sze Ngee, Yongjun Gao, Xi Chen, Timothy Misso Lee, Zhigang Hu, Dan Zhao, and Ning Yan. Ind. Eng. Chem. Res.: August 25, 2014
  • Advanced Hybrid Supercapacitor Based on a Mesoporous Niobium Pentoxide/Carbon as High-Performance Anode. Eunho Lim, Haegyeom Kim, Changshin Jo, Jinyoung Chun, Kyojin Ku, Seongseop Kim, Hyung Ik Lee, In-Sik Nam, Songhun Yoon, Kisuk Kang, and Jinwoo Lee. ACS Nano: August 19, 2014
  • Monolithic Gyroidal Mesoporous Mixed Titanium–Niobium Nitrides. Spencer W. Robbins, Hiroaki Sai, Francis J. DiSalvo, Sol M. Gruner, and Ulrich Wiesner. ACS Nano: August 14, 2014
  • Effect of Niobium on the Defect Chemistry and Oxidation Kinetics of Tetragonal ZrO2. Uuganbayar Otgonbaatar, Wen Ma, Mostafa Youssef, and Bilge Yildiz. J. Phys. Chem. C: August 7, 2014
  • Niobium Segregation in Niobium-Doped Titanium Dioxide (Rutile). Armand J. Atanacio, Tadeusz Bak, and Janusz Nowotny. J. Phys. Chem. C: April 29, 2014
  • Synthesis and DFT, Multinuclear Magnetic Resonance, and X-ray Structural Studies of Iminoacyl Imido Hydridotris(3,5-dimethylpyrazolyl)borate Niobium and Tantalum(V) Complexes. Miguel Galájov, Carlos Garcia, Manuel Gómez, Pilar Gómez-Sal, and Manuel Temprado. Organometallics: April 23, 2014
  • Thermoelectric Properties of Strontium Titanate Superlattices Incorporating Niobium Oxide Nanolayers. S. R. Sarath Kumar, M. N. Hedhili, Dongkyu Cha, Terry M. Tritt, and H. N. Alshareef. Chem. Mater.: April 9, 2014
  • Role of Zinc and Niobium in the Giant Piezoelectric Response of PbZn1/3Nb2/3O3. A. Al-Zein, H. Dammak, Ph. Papet, O. Mathon, B. Hehlen, C. Levelut, J. Haines, and J. Rouquette. Inorg. Chem.: April 9, 2014
  • Fluorine- and Niobium-Doped TiO2: Chemical and Spectroscopic Properties of Polycrystalline n-Type-Doped Anatase. Jakub Biedrzycki, Stefano Livraghi, Elio Giamello, Stefano Agnoli, and Gaetano Granozzi. J. Phys. Chem. C: April 1, 2014