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High Purity Pure Tungsten Contacts/Tungsten Pin/Resistance-Welding Electrodes

Basic Info

Model No.:  W-1, W-2

Product Description

Model NO.: W-1, W-2 Standard: GB, DIN, ASTM, AISI Alloy: Non-alloy Type: Tungsten Sheets OEM: Acceptable Trademark: ZZKD Specification: according to your requirements. HS Code: 81019600 Application: Aviation, Electronics, Industrial, Medical Purity: >99.95% Shape: Round Density: 19.2g/cm3 Diameter: According to Your Size. Transport Package: in Carton (Neutral-Packing) Origin: China Tungsten contacts:
The products are used widely in electrical appliances such as automobiles, motorcyles, electric horns, magnetic-motors etc.
PURITY ≥ 99.95% ≥ 99.92%

For producing electric light source parts and electric vaccum components.
For producing heating elements and refractory parts in high temperature furnaces.
For producing heating elements used in vaccum metalizing or plating.

Tungsten has the highest melting point (3410°C) and the lowest vapour pressure among all the metals, which makes it a preferred candidate for use as a high performance material in a variety of high temperature products and processes. 

Main Characteristics:
High melting point (3410°C)
Low thermal expansion
High electrical resistance
Low vapour pressure
Good thermal conductivity
High density
Mass Characteristics:
Symbol: W
Atomic Number: 74
Atomic Weight: 183.85
Density: 19.254 g/cc
Thermal Properties:
Melting Point: 3410°C (+ 20°C)
Boiling Point: 5900°C
Specific Heat: 0.14 kJ/kg x K at 20°C
Latent Heat of Fusion: 209 kJ/kg (estimated)
Thermal Conductivity: 129 W/m x K at 20°C
Evaporation Heat: 444 J/g
Electrical Properties:
Electrical Resistivity: 5.5 μΩ/cm at 20°C
Temperature Coefficient of the Electrical Resistivity: 0.00482 Ω/ΩK
Temperature of Superconductivity: 0.016 K
Mechanical Properties:
A lot of factors such as microstructure, impurity contents in the tungsten, other alloying elements and heat treatment (for example annealing conditions) inflence the machanical properties of tungsten. By offering various tungsten alloys, TLWM could satisfy the specific needs from customers.

Chemical Properties:
Tungsten is resistant to corrosion when the humidity is below 60%. However, it must be protected at elevated temperatures. Tungsten can oxidize in the presence of oxidizing gases at temperatures above 250°C. Despite this vulnerability, Molten glass, nitrogen, inert gases, molten metals and ceramic oxides only slightly affect it.

Chemical Composition:
Designation Tungsten Content Impurity Elements Content
Total Each
WAL1, WAL2 ≥99.95% ≤0.05% ≤0.01%
W1 ≥99.95% ≤0.05% ≤0.01%
W2 ≥99.92% ≤0.08% ≤0.01%
Note: Potassium is not counted in impurities content.

Contact us if you need more details on Pure Tungsten Contacts. We are ready to answer your questions on packaging, logistics, certification or any other aspects about Tungsten Contacts、Pure Tungsten Contact. If these products fail to match your need, please contact us and we would like to provide relevant information.

Product Categories : Heat Sinks Of Electronic Packing

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