Molybdenum
Molybdenum is a refractory metal with atomic number 42 in periodic system Mendeleev, which makes it possible to use alloy when working with high temperatures.
General characteristics
Molybdenum, as a metal, is characterized by next properties:
- Melting point 2610 °C;
- Boiling occurs at 4612 °C;
- Hardness of steel 125 HB;
- Density at 20 °C is 10.2 g/cm3;
- Electrical resistance is 5.70 μOhm•cm.
In other words, molybdenum has good heat resistance due to its high melting point. Alloy is also characterized by thermal and corrosion resistance, which makes it possible to use metal in various fields.
Application area
To large extent, molybdenum used in metallurgy, but also metal or alloys from it are used in next areas:
- Production of rocket and aircraft skin;
- Creation of equipment for working with acids;
- Glass industry;
- Heating elements of electric furnaces;
- Radio-electronic industry and x-ray equipment, etc.
In metal market-place, brands of molybdenum alloys are presented in different types of products, including stick, powder, sheets and wire.
Steel grades
Among brands of molybdenum is worth highlighting:
Alloy grades |
Chemical composition, % |
Standard | |||||||||||
GOST |
Wnr |
Uns |
Cu |
Mo |
Fe |
Si |
Mg |
Ca |
Ni |
Al |
C |
O | |
Md40 |
- |
- |
35.9−37.9 |
62.1−64.1 |
TU 11−89 | ||||||||
Md50 |
- |
- |
50 |
50 |
|||||||||
Mch |
- |
- |
<99.96 |
<0.01 |
<0.01 |
<0.002 |
<0.003 |
<0.005 |
<0.004 |
<0.005 |
<0.008 |
GOST 25442−82 | |
MchVp |
- |
- |
> 99.98 |
GOST 25442−82 | |||||||||
They are one of most popular and widely used in various fields.
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Mass units
| Kilogram (kg) | Metric ton (mt) | Pound (lb) |
|---|---|---|
| 1 000 | 1 | 2 200.62 |
| 1 | 0.001 | 2.20 |
| 0.4536 | 1 |