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Molybdenum & molybdenum alloy data sheet
Symbol: Mo
Melting Point: 2617°C
Density: 10.22 g/cc
Materials of Mo and its alloy, including plate, rods, wires, tube, and foil, are manufactured with powder metallurgy and further deformation processing. Pressing is carried out by means of linear and isostatic presses. The pressed compacts are sintered in hydrogen at temperatures of 2000-2200°C. The sintering imparts the strength and density to the compacts necessary for further processing. The sintered blocks are extruded, forged, rolled or swaged at temperatures of 1200-1500°C. The density increases with the degree of reduction. Forgings, round bars and sheets are made in this processing. Large diameter wire is rolled and drawn at high temperatures, small diameter wire at low temperatures.
Chemical composition of Pure molybdenum:
|
Element
|
Fe
|
Ni
|
Al
|
Si
|
Ca
|
Mg
|
C
|
N
|
O
|
Mo
|
|
Wt (%,max.)
|
0.010
|
0.005
|
0.002
|
0.010
|
0.002
|
0.002
|
0.010
|
0.002
|
0.007
|
≥99.95
|
TZM offers twice the strength of pure molybdenum at temperatures over 1300°C. The recrystallization temperature of TZM is approximately 250°C higher than molybdenum and it offers better weldability than pure molybdenum.
Chemical composition of TZM
|
Element
|
Fe
|
Ni
|
Al
|
Si
|
C
|
N
|
O
|
Ti
|
Zr
|
Mo
|
|
Wt (%,max.)
|
0.010
|
0.005
|
-
|
0.005
|
0.01-0.04
|
0.002
|
0.05
|
0.40-0.55
|
0.06-0.12
|
Bal.
|
Mo-Cu alloys are made from Mo and Cu by sintered. Mo-Cu sheet is much lighter than W-Cu, so it is more suitable for aeronautic and astronautic applications.
Mo-Cu typical properties
|
Type
|
Typical Properties
|
||||
|
Content
wt%
|
Density
g/cm3 |
CTE
10-6/K
|
Thermal Conductivity
W/m.K |
||
|
Mo70Cu
|
Mo 70±1
|
Cu bal.
|
9.6-9.8
|
7.8-8.4
|
190-200
|
|
Mo60Cu
|
Mo 60±1
|
Cu bal.
|
9.5-9.7
|
9.0-9.6
|
200-220
|
|
Mo50Cu
|
Mo 50±1
|
Cu bal.
|
9.3-9.5
|
10.1-10.7
|
220-250
|
Molybdenum lanthanum alloy is a molybdenum-based material which is doped with 0.7 weight% of La2O3. ML is available as semi-finished products like sheet and plate material. Stable fine-dispersed particles of La2O3 combined with elongated grain structure leads to very good high-temperature properties (especially creep properties) up to operation temperatures of 2000°C.
Typical application for pure molybdenum and its alloy:
Components of Vacuum and High temperature Furnaces
Wires for Lighting
Sintered Crucibles and Substrate Holders for Molecular Beam Epitaxy
Boats and Cups for the Annealing Filaments and Electrodes
Semiconductor Base Plates, Pins and Hats for Microwave Magnetrons
Tube Components for Cathode Ray Tubes
Nozzles for Manufacturing Glass and Glass Fibers
Heat sinks in electronic devices
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