|Atomic mass||95,95 u|
|Density||10,28 g/cm³ (at 20 °C)|
|Melting point||2896K (2623 °C)|
You can purchase molybdenum semi-finished products from HWN titan GmbH based in Mönchengladbach (NRW). We deliver to customers from all over the world and offer molybdenum semi-finished products for various applications like plant and equipment engineering, aerospace industries, medical technologies and automotive industries. If you are looking for a reliable partner to purchase molybdenum semi-finished products from please contact us via our service center via phone or through our online contact form. Our experts will be more than happy to help you.
In 1778, the chemist Carl Wilhelm Scheele managed to produce white molybdenum oxide (MoO3) by treating molybdenum sulphide with nitric acid. The white molybdenum sulphide was often confused with graphite. Three years later in 1781, Peter Jacob Hjelm reduced the oxide to pure molybdenum by using coal. Highly pure molybdenum can be shaped easily but even through minor impurities e.g. of 1 ppm oxygen, the material becomes brittle.
For a long time there was absolutely no usage for molybdenum. Only at the end of the 19th century were its versatile applications recognised. Today, molybdenum is used as a complementary alloying element in steel production. The main share of today’s molybdenum is extracted in copper production; only 30% are extracted directly from molybdenum ores.
Usually all ores are reengineered to ammonium heptamolybdate which will be transformed into molybdenum trioxide using calcination at ca. 400°C into.. In two stages, molybdenum trioxide is reduced to pure molybdenum powder. The first stage takes place at 500-600°C and results in metastable brownish-purple molybdenum oxide MoO2. Pure metal powder is extracted in the second stage pure. By further processing the powder either through remelting it under pressure in a controlled argon atmosphere or through compression in an electron beam furnace the compact metal is extracted.
Pure molybdenum and molybdenum alloys contain unique properties like a very high melting point at 2620°C or corrosion resistance even at high temperatures in aggressive circumstances.
High loading capacity at temperatures of 2000°C
Very good thermal and electrical conductivity
Minor thermal expansion coefficient
Shielding of high energy particles
MoLa: Molybdenum with lanthanum has a higher recrystallization temperature then pure molybdenum or HCT molybdenum and in general a better ductability.
TZM: Titanium, zirconium and molybdenum leads to higher cohesiveness than pure molybdenum. In addition, this material provides a higher recrystallization temperature and better creep resistance.
HCT: Develops closed, elongated grain structures which act ductile at room temperature. This alloy is used in resistance heating elements, fixtures for filament retainers and electronic tubes.
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