Molybdenum has the symbol Mo and atomic number 42 on the periodic table.
It has the sixth highest melting point of any element, and is often used in high strength steel alloys due to its ability to form hard, stable carbides.
It is able to withstand extreme heat and is therefore sometimes used in place of Tungsten, due to its lower density and more stable price.
Molybdenum is also used in alloys for its corrosion resistanceas well as in lubricants, e.g. specialised grease - due to its high resistance to heat and wear.
In stainless steel, it is often added for corrosion resistance, carbide formation, high temperature strength and also serves as a ferrite former.
Precautions:
Molybdenum dust and fumes, as are generated by milling or metal working, can be toxic, especially when breathed in, stored in the sinuses, and swallowed later. Molybdenum can also irritate the eyes and skin.
Chronic exposure can cause symptoms including fatigue, headache and joint pain.
