Molybdenum thread
International Equivalent
Mark | Analogue | W. Nr. | Aisi Uns | En | Order |
---|---|---|---|---|---|
MK | MoSi0.03 | Delivery from the stock, in stock |
Advantages
Molybdenum filament has unique qualities. It is resistant to aggressive media, withstands very high temperatures of up to 1800 °C in a vacuum, and is almost twice as light as tungsten filament, so it has a high specific strength of up toIt has a high modulus of elasticity and a low thermal expansion coefficient, identical to glass, so that molybdenum filament can be used for electric current input in vacuum devices. This filament is not as fragile as tungsten filament, produced with less technological effort.
Disadvantages
Such filament has a high cost: molybdenum is difficult enough to isolate in pure form, it is hard, refractory and difficult to process. However, reliability and extraordinary qualities of molybdenum thread fully recoup all the costs.
Production
Molybdenum wire Ø 1-10 mm is first produced by rolling hot billets in a rotary forging machine. The wire is then drawn into a very fine filament. The wire can be made either from pure molybdenum in Molybdenum and Molybdenum alloys, or with the addition of cobalt or chromium. In this case its manufacturability and strength increase. From 1 gram of molybdenum is rolled into a thread over three meters long.
Grade | Group | Ø in mm | Tensile strength kgf/mm² | Tensile strength kg/mg/200 mm |
---|---|---|---|---|
MK | А | 0,2 - 0,5 | 121 | 60 |
MC-K | A, B | 0,015 - 0,07 | 173, | 85 |
MSH-K | A, B | 0,071 - 0,09 | 163 | 80 |
MSH-K | A, B | 0,091 - 0,2 | 142 | 70 |
MSH-KS | А | 0,015 - 0,07 | 152 | 75 |
MF-CS | А | 0,071 - 0,09 | 142 | 70 |
MF-CS | А | 0,091 - 0,2 | 121 | 60 |
Applications
Molybdenum filament is used in lighting devices. Depending on diameter and surface condition, spiral and non-spiral cathodes, grids, springs, loop heaters of electronic devices, springs of semiconductor devices are produced. They also make bushings, traverses, and those parts of devices that do not require tungsten alloys.
Buy at the best price
Evek GmbH has a wide range of rare and refractory metal products in stock. We supply molybdenum filament and molybdenum wire wholesale and retail at optimal prices. On our site you will find all the information you need, Technological completion of each stage of production allows for individual orders, if the basic execution of products you are not satisfied. We carry out quality orders of non-standard parameters, the timing of their implementation is minimal. In case of bulk purchases we provide discounts.