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Cr
Chromium
Atomic no.:
24
Atom. weight: 51.996
Density: 7.1
Class:
Heavy metal
Melting point: 1857°C
Boiling point: 2672°C
Colour: silvery shiny
   
Discoverer: N.L. Vanquelin
Place: Paris, France
Year: 1780

Discovered in 1780 by N.L. Vanquelin in Paris, France. Chromium is a bright, blue/white metal with excellent corrosion resistance. It is obtained by the aluminum reduction of Cr2O3, the source of which is chromite, a double oxide of chromium and iron which generally also contains magnesium. It has an abundance within the earth's crust of approximately 100 ppm. Chromium is soluble in HCl and H2SO4, but not in H3PO4, HNO3 or HClO4 due to the formation of a stable and insoluble oxide layer on its surface; this, along with its hardness, has been used to advantage in the chromium plating of steel which has good corrosion resistance. Chromium is alloyed with nickel in the manufacture of heat resisting alloys, and with iron, or nickel and iron, to produce stainless and heat resistant steels. Chromium is an important trace element for humans as it assists in the manufacture of glucose.

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smart-elements - Acrylic Element cube - - Chromium Cr - 50mm

Acrylic Element cube - - Chromium Cr - 50mm

Amount: 1 St.
Purity :99.9%


1 pcs.: 89.00 € - tax free

in stock

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smart-elements - Chromium - precision density-standard cube 1cm3

Chromium - precision density-standard cube 1cm3

Amount: 1 St. / 1 pc..
Purity :~99,95%


1 pcs.: 112.00 € - tax free

in stock

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smart-elements - Chromium rod 99.9% - ~46g - Ø 12.7 x 50mm

Chromium rod 99.9% - ~46g - Ø 12.7 x 50mm

Amount: 1 St. / pc.
Purity :99.9%


1 pcs.: SOLD!

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smart-elements - Chromium 3+ doped glass bead NEW!

Chromium 3+ doped glass bead NEW!

Amount: 1 St. / 1 pc.
Purity :--


1 pcs.: 22.00 € - tax free

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smart-elements - Acrylic Element cube - - Chromium Cr - 50mm

Acrylic Element cube - - Chromium Cr - 50mm

Amount: 1 St.
Purity :99.9%


1 pcs.: 73.00 € - tax free

in stock

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smart-elements - Very nice chromium lump 533 grams  - >99.9% unique piece

Very nice chromium lump 533 grams - >99.9% unique piece

Amount: 533g
Purity :>99,9%


1 pcs.: SOLD!

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smart-elements - 250 grams Chromium Metal fragments 99.95% purity

250 grams Chromium Metal fragments 99.95% purity

Amount: 250g
Purity :99.95%


1 pcs.: SOLD!

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smart-elements - big high purity Chromium Metal melted bead -

big high purity Chromium Metal melted bead -

Amount: 17.91g
Purity :99.9%


1 pcs.: SOLD!

Details   

smart-elements - big high purity Chromium Metal melted bead -

big high purity Chromium Metal melted bead -

Amount: 17.90g
Purity :99.9%


1 pcs.: SOLD!

Details   

smart-elements - Chromium rod 99.9% - ~389g - Ø 35 x 55mm

Chromium rod 99.9% - ~389g - Ø 35 x 55mm

Amount: 1 St. / pc.
Purity :99.9%


1 pcs.: SOLD!

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smart-elements - shiny chromium crystals in ampoule 99,99% purity 2.0 grams

shiny chromium crystals in ampoule 99,99% purity 2.0 grams

Amount: 2.0g
Purity :99,999%


1 pcs.: SOLD!

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smart-elements - 50 grams Chromium Metal fragments 99.95% purity

50 grams Chromium Metal fragments 99.95% purity

Amount: 50g
Purity :99.95%


1 pcs.: SOLD!

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smart-elements - Pure chromium fragments in ampoule 99.95% purity 5g

Pure chromium fragments in ampoule 99.95% purity 5g

Amount: 1 piece/Stk.
Purity :99.95%


1 pcs.: 22.00 € - tax free
5-9 pcs.: 21.00 €
>9 pcs.: 20.00 €

in stock

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smart-elements - High purity ground UHP Chromium target 99.95%  - > 42 grams

High purity ground UHP Chromium target 99.95% - > 42 grams

Amount: >42g
Purity :99,95%


1 pcs.: SOLD!

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smart-elements - Ultra pure chromium chips 99.995% purity 5 grams

Ultra pure chromium chips 99.995% purity 5 grams

Amount: 5g
Purity :99.995%


1 pcs.: SOLD!

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