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 9001:2008 |
| Model Number: | Pure Tungsten Surface Ground |
| Minimum Order Quantity: | 1 pc |
| Price: | Negotiable |
| Packaging Details: | Plastic boxes, Paper cartons |
| Delivery Time: | 20-25 days after deposition |
| Payment Terms: | T/T, L/C, Western Union, PayPal |
| Supply Ability: | 2 MT / Month |
| W Compositioni: | No Less Than 99.95% | SurfaceMachine Polished / Ground: | Ground |
|---|---|---|---|
| Density: | > 19.1 G / Cm3 | Tolerance: | + / - 0.1mm |
| Thickness: | 1.0 Mm - 100mm | W X L: | Max 550mm X 1000mm |
| High Light: | 550mmX1000mm tungsten sheet,550mmX1000mm Tungsten Plate,100mm 99.95% Tungsten Plate |
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Ground Surface Tungsten Plate Square Bars For Sapphire Industry Furnace Heating Parts
Tungsten metal has the high melting point, good thermal and electrical conductivity as well as low vapor pressure at the high temperatures. Those properties make the tungsten metal has the high performance in a variety of high temperature products and processes. In spite of its characteristic of oxidizing easily when heated in air, tungsten metal is widely utilized as a heating element material in industries.
The features of the tungsten square bars:
The tungsten plates' purity is higher than 99.95%. The density of the tungsten plates is 19.3g/cc. The size is about T0.05-50mm*W50-500mm*L100-1000mm. The surface is chemically cleaned or polised. The tungsten plates meet the standard of ASTM B760/GB T3875.
The application of the tungsten heating parts
1. The sapphire crystal growth furnace
2. High-purity and high-density, no internal-crack tungsten crucible
3. Electroheat upsetting anvil block
4. High voltage electrical contact
5. Electrodes for resistance welding
Specifications of tungsten square bars for sapphire industry:
|
Thickness(mm) |
Thickness tolerance (I II)(mm) |
Width (mm) |
Width tolerance (mm) |
Length (mm) |
Length tolerance(mm) |
|
> 0.40-0.60 |
±0.04 ±0.05 |
50-400 |
± 4 |
50-1000 |
± 4 |
|
> 0.60-1.0 |
±0.06 ±0.10 |
50-400 |
± 4 |
50-1000 |
± 4 |
|
> 1.0-2.0 |
±0.10 ±0.20 |
50-400 |
± 5 |
50-1000 |
± 5 |
|
> 2.0-4.0 |
±0.20 ±0.30 |
50-400 |
± 5 |
50-1000 |
± 5 |
|
> 4.0-6.0 |
±0.30 ±0.40 |
50-400 |
± 5 |
50-800 |
± 5 |
|
> 6.0 |
±6% ±8 % |
50-300 |
--- |
50-800 |
--- |
Material testing report of pure tungsten plates
|
Density |
G/CM3 |
19.3 |
|
Melting point |
oC |
3410 |
|
Thermal conductivity |
W/M.K |
174 (10--100 oC ) |
|
Resistivity |
Ω.CM |
35 (1000 oC ) |
|
Vapor pressure |
Pa |
low |
|
Modulus |
/MPa |
35 316 |
|
Thermal expansion coefficient |
K-1 |
4.5 X 10-6 (0--100 oC ) |
|
Hardness |
HB |
290--350 |
|
Tensile strength |
MPa |
981-1472 |
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