Molybdenum Steel Welded pipe and Tube
“It is an alloying agent in stainless steel because of its corrosion resistance, strength and the ability to hold its shape. It also operates in high temperature.
- Atomic symbol: Mo
- Atomic number: 42
- Element category: transition metal
- Melting point: 2623 degree Celsius
- Boiling point: 4639 degree Celsius
- Molybdenum hardness: 5.5
It has a high density and melting point. It is heat resistant. It is one of the highest melting points of all metal elements. Its coefficient of thermal expansion is one of the lowest of all engineering materials. It has a low toxity. In steel, it reduces brittleness as well as enhances strength, hardenability, weld ability and corrosion resistance.
- It is produced as a co-product of copper but few mines are produce as a primary product. Primary production of molybdenum is extracted from a sulphide ore, molybdenite, which has a content of between 0.01 and 0.25%.
- This metal is produced from molybdic oxide or ammonium molybdate through a process of hydrogen reduction. It must firsts be crushed and floated to separate copper sulphite from the molybdenite. Sublimation of concentrate leads to molybdic oxide which through a two-step hydrogen reduction process, produces molybdenum metal.
- Roasted molybdenum concentrate contains a minimum of 57% molybdenum. Molybdenum produced as a by-product of copper from copper porphyry deposits. The concentrate is roasted to make molybdic oxide, which can be put through the same sublimation process to produce molybdenum metal.