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V
Vanadium
Atomic no.:
23
Atom. weight: 50.9415
Density: 6.11
Class:
refractory metal
Melting point: 1910°C
Boiling point: 3407°C
Colour: silvery shiny
   
Discoverer: Niels Gabriel Sefström
Place: Falun, Sweden
Year: 1831

Vanadium was discovered in Mexico City in 1801 by A.M. del Rio, and was rediscovered in 1831 by N.G. Selfström in Falun, Sweden. Vanadium is a soft, shiny, silvery metal which can be found in many different minerals, including some crude oils. It has an abundance of 160 ppm in the earth's crust and can be isolated after conversion to the pentoxide, V2O5, followed by direct reduction with aluminum. High purity metal can be obtained by the van Arkel process in which the iodide is decomposed on a hot filament under vacuum. Pure vanadium resists corrosion due to the formation of a protective oxide film on its surface; it is attacked by concentrated acids but not by fused alkalis. The principal use for vanadium is as an alloying constituent, particularly in steels where it is introduced as ferrovanadium, an alloy of iron and vanadium. The addition of vanadium to steels removes occluded oxygen and nitrogen, thus improving the materials' strength. A typical vanadium content would be 0.5% max.

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 VANADIUM - precision density-standard cube 1cm3  Art. Nr. 003401  
VANADIUM - precision density-standard cube 1cm3
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Vanadium -  precision density-standard cube 1cm3 NEW!

Using finest materials, each density cube was lapped to 10x10x10mm by a mechanical engineering company with an accuracy of 0.01 millimeter. Each one separately ground and mirror polished it represents the theoretical density of the respective element by its weight. The weight is not affected by the laser inscription. Information such as element symbol, name and density is durable burned at the surface. Each element even shows its specific characteristis in colour and reaction with the laser. Altogether 25 elements are planned in a complete set in a wooden case.

Amount: 1 St. / 1 pc..
Purity : ~99,95%
Packing: PE - bag
134.00
- tax free

Availability: 2 in stock

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