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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

  • Resolving the morphology of niobium carbonitride nano-precipitates in steel using atom probe tomography. Breen AJ, Xie KY, Moody MP, Gault B, Yen HW, Wong CC, Cairney JM, Ringer SP. Microsc Microanal. 2014 Aug
  • Subtle niobium. Tarselli MA. Nat Chem. 2014 Feb
  • Development of a separation method for molybdenum from zirconium, niobium, and major elements of rubble samples. Shimada A, Ozawa M, Yabuki K, Kimiyama K, Sato K, Kameo Y. J Chromatogr A. 2014 Dec 5
  • Mild Niobium-Catalyzed [2 + 2 + 2] Cycloaddition of Sila-triynes: Easy Access to Polysubstituted Benzosilacyclobutenes. Simon C, Amatore M, Aubert C, Petit M. Org Lett. 2015 Feb 20
  • Tetraphenolate niobium and tantalum complexes for the ring opening polymerization of ?-caprolactone. Al-Khafaji Y, Sun X, Prior TJ, Elsegood MR, Redshaw C. Dalton Trans. 2015 Feb 27.
  • Sub-picowatt resolution calorimetry with niobium nitride thin-film thermometer. Dechaumphai E, Chen R. Rev Sci Instrum. 2014 Sep
  • Proton conductivity of naphthalene sulfonate formaldehyde resin-doped mesoporous niobium and tantalum oxide composites. Turley JP, Romer F, Trudeau ML, Dias ML, Smith ME, Hanna JV, Antonelli DM. ChemSusChem. 2015 Jan
  • Radiopacity and cytotoxicity of Portland cement associated with niobium oxide micro and nanoparticles. Mestieri LB, Tanomaru-Filho M, Gomes-Cornélio AL, Salles LP, Bernardi MI, Guerreiro-Tanomaru JM. J Appl Oral Sci. 2014 Nov-Dec
  • Structural and spectroscopic characterizations of tetra-nuclear niobium(V) complexes of quinolinol derivatives. Amini MM, Fazaeli Y, Mohammadnezhad G, Khavasi HR. Spectrochim Acta A Mol Biomol Spectrosc. 2015 Feb 26
  • Advanced hybrid supercapacitor based on a mesoporous niobium pentoxide/carbon as high-performance anode. Lim E, Kim H, Jo C, Chun J, Ku K, Kim S, Lee HI, Nam IS, Yoon S, Kang K, Lee J. ACS Nano. 2014 Sep 23
  • Monolithic gyroidal mesoporous mixed titanium-niobium nitrides. Robbins SW, Sai H, DiSalvo FJ, Gruner SM, Wiesner U. ACS Nano. 2014 Aug 26
  • Nb2O2F3: a reduced niobium (III/IV) oxyfluoride with a complex structural, magnetic, and electronic phase transition. Tran TT, Gooch M, Lorenz B, Litvinchuk AP, Sorolla MG 2nd, Brgoch J, Chu PC, Guloy AM. J Am Chem Soc. 2015 Jan 21
  • Mixed amido-/imido-/guanidinato niobium complexes: synthesis and the effect of ligands on insertion reactions. Elorriaga D, Carrillo-Hermosilla F, Antiñolo A, López-Solera I, Fernández-Galán R, Villaseñor E. Dalton Trans. 2014 Dec 14
  • Probing structural variation and multifunctionality in niobium doped bismuth vanadate materials. Saithathul Fathimah S, Prabhakar Rao P, James V, Raj AK, Chitradevi GR, Leela S. Dalton Trans. 2014 Nov 14
  • Niobium(V) and tantalum(V) halide chalcogenoether complexes--towards single source CVD precursors for ME2 thin films. Benjamin SL, Chang YP, Gurnani C, Hector AL, Huggon M, Levason W, Reid G. Dalton Trans. 2014 Nov 28
  • Niobium-nitrides derived from nitrogen splitting. Searles K, Carroll PJ, Chen CH, Pink M, Mindiola DJ. Chem Commun (Camb). 2015 Feb 12
  • Reductive lithium insertion into B-cation deficient niobium perovskite oxides. Perejon A, Hayward MA. Dalton Trans. 2015 Jan 5.
  • Niobium pentoxide as radiopacifying agent of calcium silicate-based material: evaluation of physicochemical and biological properties. Silva GF, Tanomaru-Filho M, Bernardi MI, Guerreiro-Tanomaru JM, Cerri PS. Clin Oral Investig. 2015 Feb 3.
  • Redox-reversible niobium-doped strontium titanate decorated with in situ grown nickel nanocatalyst for high-temperature direct steam electrolysis. Yang L, Xie K, Xu S, Wu T, Zhou Q, Xie T, Wu Y. Dalton Trans. 2014 Oct 7
  • Regioselective [2+2] and [4+2] cycloaddition reactivity in an asymmetric niobium(bisimido) moiety towards unsaturated organic molecules. Obenhuber AH, Gianetti TL, Bergman RG, Arnold J. Chem Commun (Camb). 2015 Jan 25