Physical properties of cobalt: cobalt is a shiny steel gray metal with melting point of 1493 ℃ and specific gravity of 8.9. It is relatively hard and brittle. Cobalt is ferromagnetic and is similar to iron and nickel in hardness, tensile strength, machinability, thermodynamic properties and electrochemical behavior. When heated to 1150 ℃, the magnetism disappears.…
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