Hubei Fotma Machinery Co., Ltd.
Tungsten, Molybdenum, Titanium, Tungsten Carbide and Investment Casting Products
| Place of Origin: | China |
|---|---|
| Brand Name: | FOTMA |
| Certification: | ISO9001:2000 |
| Model Number: | Customized |
| Minimum Order Quantity: | 1 pc |
| Price: | Negotiable |
| Packaging Details: | Paper cartons or plywood boxes |
| Delivery Time: | 20-25 days after deposit |
| Payment Terms: | L/C, T/T, Western Union, MoneyGram |
| Supply Ability: | 10000pcs/month |
| Purity: | 99.95% | Grade: | Mo-1 |
|---|---|---|---|
| Standard: | ASTM B 386 | Density: | ≥ 10.2 G / Cm3 |
| Surface: | Black, Machined, Ground | Sizes: | Customized |
| High Light: | Vacuum Furnace Mo1 Molybdenum Products,ASTM B386 Molybdenum Products,99.95% Molybdenum Products |
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Special Pure Molybdenum Products Specific Molybdenum Parts for Vacuum Furnace
Thanks to the outstanding electrical and heat-conducting capabilities and relatively high tensile strength, molybdenum thermal conductivity is approximately 50% higher than that of steel, iron or nickel alloys. It consequently finds wide usage as heatsinks. Their electrical conductivity is the highest of all refractory metals, about one third that of copper, but higher than nickel, platinum, or mercury. The coefficient of thermal expansion of molybdenum plots almost linearly with temperature over a wide range. This characteristic, in combination will raise heat-conducting capabilities, accounts for its use in bimetal thermocouples. Methods of doping molybdenum powder with potassium aluminosilicate to obtain a non-sag microstructure comparable to that of tungsten also have been developed.
Comparation of tungsten and molybdenum
|
|
|
Molybdenum |
Tungsten |
|
Density |
G/CM3 |
10.22 |
19.3 |
|
Melting point |
oC |
2620 |
3410 |
|
Thermal conductivity |
W/M.K |
98.8 (1400 oC ) |
174 (10--100 oC ) |
|
Resistivity |
Ω.CM |
53.1 (1730 oC ) |
35 (1000 oC ) |
|
Vapor pressure |
Pa |
7.09 X 10-6 (1600 oC ) |
low |
|
Modulus |
/MPa |
343 350 |
35 316 |
|
Thermal expansion coefficient |
K-1 |
6.2 X 10-6 (700 oC ) |
4.5 X 10-6 (0--100 oC ) |
|
Hardness |
HB |
35--125 |
290--350 |
|
Tensile strength |
MPa |
687 |
981-1472 |
Chemical composition of pure molybdenum material
|
RESULTS OF INSPECTION % max |
|||
|
C 0.01 |
Si 0.002 |
Fe 0.005 |
Mg 0.002 |
|
O 0.003 |
P 0.001 |
Ni 0.003 |
Ca 0.002 |
|
Pb 0.0001 |
Al 0.002 |
Bi 0.0001 |
Sn 0.0001 |
|
Sb 0.0005 |
Cd 0.0001 |
Mo Balance |
|
|
Grade |
The impurity content is not more than % |
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|
Fe |
Ni |
Al |
Si |
Mg |
C |
N |
O |
|
|
Mo-1 |
0.01 |
0.005 |
0.002 |
0.01 |
0.005 |
0.01 |
0.003 |
0.008 |
|
Mo-2 |
0.01 |
0.005 |
0.005 |
0.01 |
0.005 |
0.01 |
0.003 |
0.02 |
Picture
