Characteristics: Steel-gray, shining, hard, ductile, somewhat malleable metal; ferromagnetic, with permeability two-thirds that of iron; has exceptional magnetic properties in alloys. It is attacked by dilute hydrochloric and sulfuric acids; it is soluble in nitric acid. Cobalt corrodes readily in air. Hardness: cast, 124 Brinell; electrodeposited, 300 Brinell. An important trace element in soils and necessary for animal nutrition. Cobalt has unusual coordinating properties, especially the trivalent ion. Noncombustible except in powder form.
Derivation: From ore concentrates by roasting followed (a) by thermal reduction by aluminum, or (b) by electrolytic reduction of solutions of metal; (c) by leaching, with either ammonia or acid in an autoclave under elevated temperatures and pressures and subsequent reduction by H.
Hazard: Dust is flammable and may cause an allergic reaction in sensitized individuals. Exposure limit: 0.02mg/m3.
For more information about Cobalt, visit the Technical Data page.
In addition to the standard products listed in our online catalog, custom shapes and sizes are available upon request. If you have a custom requirement email us at firstname.lastname@example.org or use our custom quote request tool to tell us exactly what you require.