Cobalt has atomic number 27 and falls between Iron and Nickel on the table of elements. It has a melting point of 1493 degrees Celsius.
It is used in paint pigments, Nickel base super alloys, cemented carbides and tool steels and megnetic materials. It is possibly most commonly known for its inclusion in special drill bits, where its ability to withstand heatresults in a better cutting, longer lasting drill bit and is especially effective in drilling stainless steel.
As a group, Cobalt alloys are wear, corrosion and heat resistant.
In stainless steel however, it is Cobalt's ability to refine the grain of the steel, even in a very small percentage, that makes it a valuable addition to knife steel, as this results in a finer, longer lasting cutting edge.
Precautions:
High levels of exposure show cancer causing effects. Cobalt is also a major cause of contact dermatitis in its powered form. It is also a fire hazard in powder form.
