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    • Cromo - Pezzo grezzo

      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 aluminium 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.Pezzo grezzo - Un pezzo di materiale solido senza una forma definita.

    4 risultati

    Prodotto
    Prodotto CR00-LP-000100 Cromo - Pezzo grezzo Purity 99.99% Maximum Lump Size 10mm - Peso 10 g - 200 g
    Prodotto CR00-LP-000115 Cromo - Pezzo grezzo Purity 99.95% Maximum Lump Size 10mm Forma del prodotto Pellets Peso 20g - 1000g
    Prodotto CR00-LP-000110 Cromo - Pezzo grezzo Purity 99.95% Maximum Lump Size 25mm - Peso 50g - 100g
    Prodotto CR00-LP-000111 Cromo - Pezzo grezzo Purity 99.9% Maximum Lump Size 40mm - Peso 50g - 1000g
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