Niobium Chunk

High Purity Nb Chunk
CAS 7440-03-1

Product Product Code Order or Specifications
(2N) 99% Niobium Chunk NB-M-02-CK Contact American Elements
(3N) 99.9% Niobium Chunk NB-M-03-CK Contact American Elements
(4N) 99.99% Niobium Chunk NB-M-04-CK Contact American Elements
(5N) 99.999% Niobium Chunk NB-M-05-CK Contact American Elements

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 Chunk 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 (See also application discussion at Nanotechnology Information and at Quantum Dots) 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 Information Center.


Niobium Metal Niobium Titanium Alloy Niobium 2-Ethylhexanoate Cobalt Niobium Zirconium Alloy Niobium Fluoride
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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

  • P. Tsakiropoulos, On the macrosegregation of silicon in niobium silicide based alloys, Intermetallics, Volume 55, December 2014
  • Sofya B. Artemkina, Tatyana Yu Podlipskaya, Alexander I. Bulavchenko, Alexander I. Komonov, Yuri V. Mironov, Vladimir E. Fedorov, Preparation and characterization of colloidal dispersions of layered niobium chalcogenides, Colloids and Surfaces A: Physicochemical and Engineering Aspects, Volume 461, 5 November 2014
  • P. Mastanaiah, G. Madhusudhan Reddy, K. Satya Prasad, C.V.S. Murthy, An investigation on microstructures and mechanical properties of explosive cladded C103 niobium alloy over C263 nimonic alloy, Journal of Materials Processing Technology, Volume 214, Issue 11, November 2014
  • R.L. Grosso, R. Muccillo, E.N.S. Muccillo, Stabilization of the cubic phase in zirconia–scandia by niobium oxide addition, Materials Letters, Volume 134, 1 November 2014
  • Juan-Li Gao, Shuang Gao, Chun-Ling Liu, Zhao-Tie Liu, Wen-Sheng Dong, Synthesis, characterization, and catalytic application of ordered mesoporous carbon–niobium oxide composites, Materials Research Bulletin, Volume 59, November 2014
  • Aihua Yan, Changsheng Xie, Fei Huang, Shunping Zhang, Shaoliang Zhang, An efficient method to modulate the structure, morphology and properties of WO3 through niobium doping, Journal of Alloys and Compounds, Volume 610, 15 October 2014
  • Zhong-Li Liu, Ling-Cang Cai, Xiu-Lu Zhang, Novel high pressure structures and superconductivity of niobium disulfide, Journal of Alloys and Compounds, Volume 610, 15 October 2014
  • O. Toma, S. Georgescu, Excited-state absorption in erbium-doped calcium lithium niobium gallium garnet, Journal of Luminescence, Volume 154, October 2014
  • L. Ghussn, R.M.C.V. Reis, R.K. Brow, D.B. Baker, Color bleaching and oxygen diffusion in a niobium phosphate glass, Journal of Non-Crystalline Solids, Volume 401, 1 October 2014
  • Agnieszka Gubernat, Lukasz Zych, The isothermal sintering of the single-phase non-stoichiometric niobium carbide (NbC1-x) and tantalum carbide (TaC1-x), Journal of the European Ceramic Society, Volume 34, Issue 12, October 2014
  • Bo-Wen Huang, Jia-Xiang Shang, Zeng-Hui Liu, Yue Chen, Atomic simulation of bcc niobium 5 grain boundary under shear deformation, Acta Materialia, Volume 77, 15 September 2014
  • F.E. Castillejo, D.M. Marulanda, J.J. Olaya, J.E. Alfonso, Wear and corrosion resistance of niobium–chromium carbide coatings on AISI D2 produced through TRD, Surface and Coatings Technology, Volume 254, 15 September 2014
  • Li Ming, Qingfeng Wang, Huibin Wang, Chuanyou Zhang, Zhang Wei, Aimin Guo, A remarkable role of niobium precipitation in refining microstructure and improving toughness of A QT-treated 20CrMo47NbV steel with ultrahigh strength, Materials Science and Engineering: A, Volume 613, 8 September 2014
  • Chenning Zhang, Tetsuo Uchikoshi, Ji-Guang Li, Takayuki Watanabe, Takamasa Ishigaki, Photocatalytic activities of europium (III) and niobium (V) co-doped TiO2 nanopowders synthesized in Ar/O2 radio-frequency thermal plasmas, Journal of Alloys and Compounds, Volume 606, 5 September 2014
  • Lingxia Li, Dan Xu, Shihui Yu, Helei Dong, Yuxin Jin, Effect of thickness on the dielectric properties of bismuth magnesium niobium thin films deposited by rf magnetron sputtering, Ceramics International, Volume 40, Issue 8, Part A, September 2014
  • Maciej Sowa, Katarzyna Gren, Andrey I. Kukharenko, Danila M. Korotin, Joanna Michalska, Lilianna Szyk-Warszynska, Michal Mosialek, Jerzy Zak, Elzbieta Pamula, Ernst Z. Kurmaev, Seif O. Cholakh, Wojciech Simka, Influence of electropolishing and anodic oxidation on morphology, chemical composition and corrosion resistance of niobium, Materials Science and Engineering: C, Volume 42, 1 September 2014
  • L. Portebois, S. Mathieu, Y. Bouizi, M. Vilasi, S. Mathieu, Effect of boron addition on the oxidation resistance of silicide protective coatings: A focus on boron location in as-coated and oxidised coated niobium alloys, Surface and Coatings Technology, Volume 253, 25 August 2014
  • Lixia Wang, Bin Kang, Juncai Sun, Yuanyuan Li, Linan Jia, Niobium diffusion modified austenitic stainless steel bipolar plate for direct methanol fuel cell, International Journal of Hydrogen Energy, Volume 39, Issue 25, 22 August 2014
  • Zhongfei Ye, Pei Wang, Dianzhong Li, Yutuo Zhang, Yiyi Li, Effect of carbon and niobium on the microstructure and impact toughness of a High silicon 12%Cr Ferritic/Martensitic heat resistant steel, Materials Science and Engineering: A, Available online 8 August 2014
  • J. Suresh Kumar, K. Pavani, M.P.F. Graça, M.J. Soares, Enhanced green upconversion by controlled ceramization of Er3+–Yb3+ co-doped sodium niobium tellurite glass–ceramics for low temperature sensors, Journal of Alloys and Compounds, Available online 4 August 2014