Vanadium density cube ultra precision 10.0x10.0x10.0mm - 99.9% purity For Sale

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Vanadium density cube ultra precision 10.0x10.0x10.0mm - 99.9% purity:
$119.00

Vanadium - high precision density-standard cube 1cm3 -

10.0 x 10.0 x10.0mm - purity 99.95%

The most accurate density standard cubes available - Made in Germany!

Vanadium - Precision density-standard cube 1cm3 NEW! Laser engraved. Using finest materials, each density cube was lapped to 10x10x10mmby a mechanical engineering company with an accuracy of0.01 millimeter.Eachoneseparately ground and 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.

Altogether 36 elements are available in a complete set in a wooden case (available separately).

A complete set with over 36 elements is available on request

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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