Molybdenum ruond bar is resistant to corrosion when the humidity is below 60%. Molybdenum round bar is made of by high quality molybdenum raw material with high melting point, corrosion resistance, high density, good thermal conductivity and electrical conductivity.  However, it must be protected at elevated temperatures. Molybdenum can oxidize in the presence of oxidizing gases at temperatures above 250° C. Despite this vulnerability, Molten glass, nitrogen, inert gases, molten metals and ceramic oxides only slightly affect it.

Moly bars have high melting point so it's suitable for very high-temperature applications. It is also characterized by a uniquely low coefficient of thermal expansion and a very high level of dimensional stability.