Hubei Fotma Machinery Co., Ltd.
Tungsten, Molybdenum, Titanium, Tungsten Carbide and Investment Casting Products
| Place of Origin: | P.R. China |
|---|---|
| Brand Name: | FOTMA |
| Certification: | ISO 9001:2000 |
| Model Number: | W-1, W-2, WAL |
| Minimum Order Quantity: | 1 pc |
| Price: | Negotiable |
| Packaging Details: | Plastic boxes, Paper cartons |
| Delivery Time: | 20-25 days after deposit |
| Payment Terms: | T/T, L/C, Western Union, PayPal |
| Supply Ability: | 2 MT / Month |
| Purity: | 99.95% | Density: | No Less Than 19.0 G / Cm3 |
|---|---|---|---|
| Diameter: | 0.8mm - 200mm | Length: | 10mm - 1100mm |
| Surface: | Polished | Tolerance: | + / - 0.05mm |
| Highlight: | 99.95% W1 Pure Tungsten Rod,4mm*1000mm Polished Tungsten Bar,4mm*1000mm W1 Pure Tungsten Rod |
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99.95% Customized Pure Polished / Ground Tungsten Rod / Diameter 4mm length1000mm Tungsten rods with polished surface
Tungsten is a metallic chemical element classified among the transition metals of the periodic table of elements. It is well known for its strength and durability, which make it extremely useful in a wide range of industrial applications. Some consumers also own products which contain tungsten or were produced with tungsten. The world's major sources of this element are Russia, Austria, China and Portugal, where it is extracted from minerals such as scheelite and wolframite.
The pure tungsten rods have the following features such as the high melting point, high density, high temperature oxidation resistance, long service life and the resistance to corrosion.
The characteristics of tungsten metal
1. The lowest vapor pressure of all metals
2. High module of compression and elastivity
3. High thermal creep resistance
4. High thermal and electrical conductivity
5. High coefficient of electron emission
The application of the pure tungsten rods
The pure tungsten rods can be used in the elevision and light bulb filament. The tungsten rods also can be used as the electrodes. They can be used in the furnace, aerospace, nuclear, metal sealing and elctrical contacts.
Specifications of pure tungsten polished rods
|
W (> %) |
Chemical Content (< %) |
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|
99.95 |
Fe |
Ca |
P |
Sn |
Al |
Ni |
N |
Sb |
Si |
O |
Pb |
As |
|
0.005 |
0.003 |
0.001 |
0.0001 |
0.002 |
0.003 |
0.003 |
0.001 |
0.003 |
0.003 |
0.0001 |
0.002 |
|
|
Mg |
C |
Bi |
Mo |
- |
- |
- |
- |
- |
- |
- |
- |
|
|
0.002 |
0.005 |
0.0001 |
0.001 |
- |
- |
- |
- |
- |
- |
- |
- |
|
|
Types and specs |
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|
types |
Diameter mm |
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|
|
Min mm |
Max mm |
|
|
Black tungsten rod |
swaged |
2.5 |
11.0 |
|
straighted |
0.8 |
3.0 |
|
|
Polished tungsten rod |
0.8 |
10.0 |
|
|
Diameter tolerance |
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|
diameter |
Black tungsten pole |
Ground tungsten pole |
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|
|
Dia. Tolerance% |
Roundness% |
Dia. tolerance |
roundness |
|
0.40 |
± 2 |
2 |
_ |
_ |
|
0.80 |
± 2 |
2 |
± 0.03 |
0.03 |
|
3.0 |
± 2 |
2 |
± 0.03 |
0.03 |
|
6.5 |
± 2 |
2 |
± 0.03 |
0.03 |
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