Black Tungsten Wire 99.95% W Purity Dia0.05mm
Description:
The resistivity of tungsten wire is 5.3*10^-8. Tungsten has a high
melting point, high resistivity, good strength and low vapor
pressure. It is the material for making incandescent filaments
among all pure metals. However, tungsten is hard and brittle and
difficult to process. When the current passes through the tungsten
wire and is heated to a certain temperature, the resistance value
of the tungsten wire increases to a certain value (the resistance
value of the general metal wire increases with the increase of
temperature). At room temperature, the resistance of this object
should be 1370℃-2000℃, but when the cross-sectional area and length
of the tungsten wire change, this resistance value will change. In
1909, Kulich invented the processing technology of tungsten
filament, which played a decisive role in the production and
promotion of incandescent bulbs. Its basic principle has been used
to this day.
Specifications:
mm |
diameter |
length |
Diameter tolerance |
surface |
State |
rod |
8.0~16.0 |
10~850 |
10~660 |
Black |
forged |
3.0~8.0 |
10~5000 |
10~800 |
Black |
forged |
wire |
1.5~3.0 |
10~8000 |
10~1600 |
Black |
drawing |
0.5~1.5 |
10~8000 |
10~2650 |
Black |
drawing |
Packing & Delivery:
To better ensure the safety of your goods, professional,
environmentally friendly, convenient and efficient packaging
services will be provided.
Our inspection equipment:
FAQ:
Q: What information should I let you know if i want to get a
quotation?
A: The required material dimension
(Thickness*Width*Length,diameter*length; if possible, please kindly
supply us drawings).
The required more information, such as Surface Condition, Tolerance
Request, The Quantity, and other mechanical and technical details.
If it is possible, please also provide the application of products,
we will recommend the most suitable products with details for
confirmation.
Q: How do you gurantee the quality of the products?
A: Each step of production and finished products will be carried
out inspection by QC department before storing in the warehouse. NG
goods are not allowed in the completed goods warehouse.
Q: Can you guarantee the prompt delivery?
A: Yes, when we get your inquiries, not only we will evaluate the
more competitive price, but also we can get the most reasonable
delivery time. So the prompt delivery can be guaranteed.
Q: What is the shipping cost?
A: The shipping cost is determined by the destination port, weight,
packing size, total CBM of the products, we will try best to get the most reasonable shipping cost
from the forwarders or express couriers to help you save more
money.
Q:What is the transportation way?
A:If the Gross Weight ≤45kg, it's better by express such as TNT, DHL, FedEx,, etc.
If the Gross Weight between 45kg to 100kg, by express or by air to
your nearest airport can be both considered.
If the Gross Weight ≥ 100kg ,you can choose by Air or Sea to the
nearest port.
