2019年11月14日星期四

Molybdenum in Alloy Tool Steel

Molybdenum is used efficiently and economically in alloy tool steel
improve hardenability

reduce temper embrittlement

resist hydrogen attack & sulphide stress cracking

increase elevated temperature strength

improve weldability, especially in high strength low alloy steels (HSLA)


In the present section the focus is on grades and properties of Mo containing alloy steel and iron. End uses cover the whole world of engineered products for:

Automotive, shipbuilding, aircraft and aerospace

Drilling, mining, processing

Energy generation, including boilers, steam turbines and electricity generators

Vessels, tanks, heat exchangers

Chemical & Petrochemical processing

Offshore; Oil Country Tubular Goods (OCTG)


In most cases molybdenum is needed to meet the high end of the application properties, which is accomplished with comparatively small molybdenum additions. In fact, with the exception of High Speed Steel and Maraging Steel the Mo content often ranges between 0.2 and 0.5% and rarely exceeds 1%.

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