History of molybdenum. Physical and mechanical properties.
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History
The first discoverer of molybdenum was the Swedish chemist Carl Scheele in 1778, but in the 11th-13th centuries in Japan, from the meteoric iron containing molybdenum, swords were forged. Today, this metal is an important component of special alloys for modern electronics, electrical engineering, automotive, space and aviation industries. It is widely used as an alloying element, which increases the strength and corrosion resistance of steel alloys. It is sufficiently malleable, which greatly simplifies the work with it, but it increases not only the strength of the metal, but also the fragility.
Physical properties
| Description | Notation |
|---|---|
| Chemical symbol | Mo |
| Coefficient of linear thermal expansion α [1 / ° С] | 4.9x10 -6 |
| Density [g / cm3] | 10.2 |
| Melting point t ° C | 2620 ° С |
| Specific heat (t ° 20 ° C) C [kJ / (kg · deg)] | 0.256 |
| Thermal conductivity K [W / (m · K)] | 142 |
| Specific electrical resistance R Ohmmm2 / m | 0.054 |
Storage
In closed warehouses or under a canopy, where adequate protection against mechanical and other damages is provided.
Delivery, price
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