Molybdenum is a refractory metalhaving its melting point at 2616ºC.Molybdenum is characterized by high elasticity modulus, high thermal resistance and low thermal expansion coefficient. It is also well-known for its corrosion resistance in melt and alkali vapors. Molybdenum is slightly overpassed by tungsten in terms of mechanical strength but better fit for pressure shaping. Moreover, thanks to lower (compared with tungsten) density molybdenum-based alloys have higher specific strength (at temperature below 1370ºC). 

Moreover, price for molybdenum is slightly below that of tungsten. Thanks to its properties and qualities molybdenum is one of the most common industrial metals widely used in electric and vacuum, as well as in radio-electronic industry, for special-purpose machinery and tools, and in aerospace. Molybdenum is often used as alloying agent to enhance strength characteristics of the latter.


Molybdenum marking


The following marking is the most common for molybdenum:

МЧ – pure molybdenum without anyadmixture whatsoever;

МЧВП – pure molybdenum without any impurities produced by vacuum melting;

МРН – multipurpose molybdenum, no admixture, though high number of impurities than the previous two;

МК – with silicon alkaline admixture;

ЦМ – withzirconiumortitanium admixture;

МР – molybdenum-rhenium alloy;

МВ – tungsten-molybdenum alloy.

The “NPO “GKMP” LLCsuppliesawiderangeofmolybdenum products per Customer’s specification: crucibles, boats, stems, studs. Rings, molybdenumheatersetc.

Molybdenum crucibles

Molybdenum

Molybdenum crucibles

Molybdenum crucibles

Molybdenum is characterized by high elasticity modulus, high thermal resistance and low thermal expansion coefficient, as well as high corrosion resistance in melts and alkali vapors.


Refractory nature and heat strength of molybdenum (melting point is 2620ºC) define future properties of the end product, so molybdenum crucibles proven to be very efficient in vacuum and inert gases. Moreover, electric and chemical corrosionandoxidizing resistance at high temperatures make it possible to use molybdenum in aggressive media.


A crucible is produced as follows: molding by sintering, molding by lathwork, molding by turning. Due to the fact that a crucible should not interact with materials within, only high purity molybdenum is used for production.


Depending on the purpose, the molybdenum crucibles have the most diverse shapes and sizes: cone, ellipse, with a rounded edge, without a bottom, a boat, micro and industrial crucibles, wide crucibles, tall crucibles with a reinforced edge, etc.


Depending of the purpose molybdenum crucibles have different shape and dimensions: cone, ellipsis, chamfer-edgedcrucibles, bottomless, boats, micro-crucibles, widecrucibles, highcrucibleswithreinforcededgeetc.

Characteristics of molybdenum crucibles

 

 

Diameter, mm
Wall thickness, mm
Height, mm

30-50

0.3-10

<2000

50-100

0.5-15

<2000

100-150

1-15

<2000

150-300

1-20

<2000

300-400

1.5-20

<2000

400-500

2-30

<2000

 
 
The final price of a molybdenum crucible is defined by the product’s complexity and the production approach.

 

 

The “NPO “GKMP” LLC supplies molybdenum crucibles including bowls and baths of different shapes and dimensions per Customer’s Specification.

Molybdenum shrouds

Molybdenum

Molybdenum shrouds

Molybdenum shrouds

Protective molybdenum shrouds have great heat resistance and mechanical strength; they are often used syonymously vacuum or hydrogen medium (at temperature of 1370°С.); its high corrosion resistance make it possible to use in aggressive environment.


The “NPO “GKMP” LLC proposes molybdenum protective shrouds of different shapes, design and complexity per Customer’s individual drawings.


Material

Molybdenum

Density, g/cm3

10.2

Thermal conductivity, 25°СW/m•К

138

Thermal expansion coefficient, 25°С (10-6/К)

4.90


Protective shrouds from molybdenum can be of any size or shape considering its anticipated purpose.

 

The “NPO “GKMP” LLC supplies protective shrouds from molybden umpire Customer’s drawings.

Molybdenum heaters

Molybdenum

Molybdenum heaters

Molybdenum heaters

Molybdenum heaters are commonly used as part of high temperature furnaces: vacuum and hydrogenated acrylonitrile inductions intering furnaces with operating temperature above 2000°С, as long as they are peculiar with their operational reliability and high heat resistance. Heaters are irreplaceable for glass melting, sintering of powder materials, growing monocrystals etc.


The price of a molybdenum heater is conditioned by the complexity of its configuration, dimensions and additional requirements of the Customer.


The “NPO “GKMP” LLC supplies heaters of any configuration and sizeper Customer’s drawings.

Types of available heating elements by shape:


  • U-shaped
  • W-shaped
  • I-shaped and others

  • The “NPO “GKMP” LLC supplies molybdenum heaters of any size and kitting considering the purpose and anticipated application per Customer’s drawings.

    Other products and pieces from molybdenum

    Molybdenum

    Other products and pieces from molybdenum

    Other products and pieces from molybdenum

    Molybdenum is several times surpassed by tungsten in mechanical strength, but is more machinable under pressure. Moreover, thanks to lower (compared with tungsten) density, molybdenum-based alloys have greater specific robustness (attemperaturebelow1370°С). Thepriceformolybdenummaybelowerthanthat of tungsten.


    Molybdenum products and parts are quite widely used and highly demanded in various industries:


  • Machining
  • Aerospace
  • Nuclear
  • Radio electronics
  • Vacuum machinery
  • Metallurgy (in the production of heat-resistant alloys and tool steels) and ferrous metallurgy, etc.The “NPO “GKMP” Llc supplemental information foil, sheet, rod, circle, O-rings, beam,studs, tubes, ncluding those madeper Customer’s specification and needs.


  • The “NPO “GKMP” Llc supplemental information foil, sheet, rod, circle, O-rings, beam,studs, tubes, ncluding those madeper Customer’s specification and needs.

    Dimensions of molybdenum products

    Type, mm
    Thickness, mm
    Width, mm
    Length, mm

    foil

    >0.3

    800

    2000

    molybdenum alloy sheet

    1-3

    350

    700




    Type, mm
    Diameter, mm
    Length, mm

    rod (max)

    110

    2000

    circle (max)

    20-600

    6-45



     O-rings, stems and studs


    Diameter, mm
    Wall thickness, mm
    Lenght, mm

    30-150

    5-10

    <1300

    150-300

    10-50

    <1300

    300-400

    50-60

    <1300

    400-600

    50-100

    <1300

    600-700

    50-200

    <1300



    The “NPO “GKMP” LLC supplies an wide range of molybdenum products and piecesper Customer’s drawings.

    Molybdenum-containing alloys

    Molybdenum

    Molybdenum-containing alloys

    Molybdenum-containing alloys

    Thanks to its refractory nature, heat and corrosion resistance tools production and chemical industry. Molybdenum alloys are also widely used in these industries.


    Molybdenum-copper alloy comprises characteristics of its components, namely the high thermal conductivity, low thermal expansion coefficient low gassaturation. Being deprived of magnetic properties, its perfect functionality well-known for easy machining etc.


    Due to lower (compared to that of tungsten) density molybdenum-copper alloy is easily machined and thus more suitable for mass production.

    Molybdenum-copper

    Class
    Chem.composition (%), Mo
    Chem.composition (%), Cu
    Density, г/cm3
    Thermal conductivity, 25°С, W/m·К
    Thermal expansion coefficient, 25°С, (10-6/К) 

    Mo85Cu15

    85±1

    residue

    10

    160-180

    6.8

    Mo80Cu20

    80±1

    residue

    9.9

    170-190

    7.7

    Mo70Cu30

    70±1

    residue

    9.8

    180-200

    9.1

    Mo60Cu40

    60±1

    residue

    9.66

    210-250

    10.3

    Mo50Cu50

    50±1

    residue

    9.54

    230-270

    11.5

    Mo40Cu60

    40±1

    residue

    9.42

    280-290

    11.8

     

    The “NPO “GKMP” LLC suppliesa wide range of molybdenum-containing alloy sperCustomer’s drawings and considering Customer’s needs.

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