Molybdenum Screens

Molybdenum Screens

01
Description
JSC POLEMA produces sintered and deformed semi-finished products (sheets, rods), plates, electrodes for melting glass, sputtering targets, trays and other parts, using oxide-reduced molybdenum powder with purity of 99.95-99.97% as the raw material.

Thanks to the low content of interstitial impurities and metallic impurities and the small-grain texture of the material, the finished products boast outstanding plastic properties.

Some of molybdenum's important features in terms of its industrial application include its high heat resistance, electric conductivity and heat conductivity, its relatively low thermal neutron capture cross-section with a volume weight almost twice lower than that of tungsten, etc. Molybdenum's resistance to creep and stress-rupture at high temperatures in a vacuum and in protective atmosphere (argon, hydrogen) is noticeably higher than the same properties of many metals used as the base for heat-resistant materials.

As a result of molybdenum's low temperature coefficient of linear expansion and its high melting point, it ensures the dependable functionality of structures made from molybdenum that operate at high temperatures.

Molybdenum's high thermal conductivity is several times greater than that of ordinarily used heat-resistant alloys, which prevents thermal stresses during rapid heating and cooling.

Molybdenum is resistant to the effects of acids, alkalis and resistive in many molten metals and liquid glasses.

02
specifications

JSC POLEMA makes products from molybdenum and its alloys of various constructions and dimensions, used to equip high-temperature installations with hydrogen or vacuum atmospheres for processes of sintering, annealing, growing monocrystals, etc.


Products: thermal screens, radiators, hot zones, etc. Depending on their construction, products are made using sheet materials made from molybdenum, and also from alloys based on molybdenum and other metals, fastening details made from molybdenum, and high-melting fillers (Mo, W, Mo-W).


03
advantages
Significant production experience
Strict quality control of manufactured products
Own R&D laboratory
Flexible discount system
04
Product names
When manufacturing molybdenum screens, depending on their design, sheet materials made of molybdenum, as well as alloys based on molybdenum and other metals, fasteners made of molybdenum, and refractory fillers (Mo, W, Mo-W) are used.

You can get full list of products by contacting our sales managers.: export_polema@metholding.com тел.:+7 4872 25-06-76.
05
chemical composition
Guaranteed chemical composition of MP-Мо molybdenum powder for screen production


Grade Мо, min %* Chemical composition, max ppm
Fe Al Ni Si Mg Na K Ca W Mn Zn C ∑Ме**
MP-Мо 99,95 100 30 50 50 20 30 80 40 130 10 5 40 500


*The weight percentage of Mo in MP-Мо powder is determined by subtracting the sum of the metallic impurities from 100%, controlled by Inductively Coupled Plasma Mass Spectrometry (ICP-MS).

The gas-forming impurities C, O, N, H, S, F, Cl are not taken into account in the calculations of the proportion of molybdenum.

** Σ Ме – amount of metallic impurities.

06
miscellaneous
The products are manufactured according to the agreed individual drawings of the customer.
07
Application areas