For lighting, electrodes, and high-temperature furnace components
We can provide tungsten wires as well as tungsten rods. Taking advantage of its feature of having the highest melting point among metals, tungsten wires are used for lighting, electrodes, high-temperature furnace parts, probe pins, etc. Various wire diameters, materials, and finishes are available to meet your needs. We also offer tungsten rods of the world's highest level of purity through strict control of raw materials and processes, taking advantage of our integrated production from raw materials.
Applications | Lighting, Electrodes, High-temperature furnace components, Probe pins, etc. |
---|
AW | It has excellent resistance to high temperature deformation, blackening, and shock resistance, and has a long service life due to the low content of impurity gases. |
---|---|
AX | Compared to conventional materials, the recrystallization temperature is 50 to 200℃ higher, doped pores are smaller, and the length of the crystal structure after recrystallization is 3 to 4 times longer, significantly improving nonsagging properties. |
EX | It contains few impurity gases, has excellent resistance to high-temperature deformation and corrosion against deposited metals such as Al, Ni, and Cr, and has a long service life, making it one of the world's first-class filament materials. |
DW | Long-life tungsten that facilitates thermal electron generation and prevents grain larged and grain boundary cracking at the temperature of thermal electron emission. Coil processing, tip processing, and assembly processing are also available upon request. |
CY(PFW) | The most common pure tungsten material. It has good workability, excellent corrosion resistance, and low impurity gas content. |
EP, KT | The fine dispersion of crystal grains can significantly reduce the resistance to discharge consumption. |
4N-W | Tungsten with reduced impurities and purity of 99.99% or higher. |
5N-W |
This is the world's highest purity tungsten with a purity of 99.999% or higher, with impurities reduced to the utmost limit. It is used for electrodes for various discharge lamps and in cutting-edge technological fields where minimum amounts of impurities are not acceptable. |
スクロールで表全体をご覧いただけます。
Materials | Applications | Non-sag | Shock resistance |
Machinability | Dischargeability | Discharge consumption resistance | Abrasion resistance | Corrosion resistance (VM) |
---|---|---|---|---|---|---|---|---|
AW | Filaments for halogen lamps, Grids, Supports, Heaters, Electrified wires | Excellent | Good | Good | Average | Good | Good | Average |
AX | Filaments for ultra high temperature halogen lamps (for thick and medium wires) | Excellent | Excellent | Excellent | Average | Good | Good | Average |
EX | Vacuum deposition, High-temperature furnace heaters, Printer printing wires, Supports, Discharge electrodes, Probe pins | Good | Good | Excellent | Average | Excellent | Excellent | Excellent |
DW | Electrodes, charged wire thermal electron emission filaments | Good | Excellent | Excellent | Excellent | Excellent | Good | Average |
CY (PFW) |
Structural and furnace heaters | Average | Average | Excellent | Average | Average | Good | Excellent |
EP | Discharge electrodes, Structural materials,
welding Welding electrodes |
Good | Average | Excellent | Average | Excellent | Excellent | Average |
KT | Discharge electrodes, Structural materials | Good | Average | Excellent | Average | Excellent | Excellent | Average |
4N-W 5N-W |
Electrodes, Heaters | Average | Average | Excellent | Average | Good | Excellent | Good |
スクロールで表全体をご覧いただけます。
Diameter range (mm) |
Materials | Representative spec | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
AW | AX | CY PFW |
4N-W 5N-W |
EX | EP KT |
Finish | Tolerance diameter (mm) |
Finishing polishing ※1 |
Tolerance diameter (mm) |
|||
Black | Electropolishing | CC | ||||||||||
0.03~0.14 | ✓ | ✓ | ✓ | ±0.005 | ||||||||
0.15~0.19 | ✓ | ✓ | ✓ | ±0.005 | ||||||||
0.20~0.39 | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ±0.005 | |||||
0.40~0.49 | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ±0.01 | |||||
0.50~0.59 | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ±0.02 | |||||
0.60~0.79 | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ±0.03 | ||||
0.80~0.99 | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ±0.03 | ✓ | ±0.03 | |||
1.0~1.2 | ✓ | ✓ | ✓ | ✓ | ✓ | ±0.03 | ✓ | ±0.03 | ||||
1.3~2.9 | ✓ | ✓ | ✓ | ✓ | ✓ | ±0.05 | ✓ | ±0.03 | ||||
3.0~4.9 | ✓ | ✓ | ✓ | ✓ | ✓ | ±0.15 | ✓ | ±0.03 | ||||
5.0~6.3 | ✓ | ✓ | ✓ | ✓ | ✓ | ±0.2 | ✓ | ±0.05 | ||||
6.4~8.5 | ✓ | ✓ | ✓ | ✓ | ✓ | ±0.25 | ✓ | ±0.1 | ||||
8.6~11.9 | ✓ | ✓ | ✓ | ✓ | ±0.3 | ✓ | ±0.1 | |||||
12.0~14.9 | ✓ | ✓ | ✓ | ✓ | ±0.4 | ✓ | ±0.1 | |||||
15.0~18.0 | ✓ | ✓ | ✓ | ✓ | ✓ | ±0.5 | ✓ | ±0.15 | ||||
18.1~(40.0) | ✓ | ✓ | ✓ | ✓ | ±1.0 | ✓ | ±0.2 |
※1 Finish grinding: Centerless grinding for diameters less than D30mm, cutting belter grinding for diameters D30mm and larger.
スクロールで表全体をご覧いただけます。
Diameter (mm) | 50 | 45 | 41 | 36 | 31 | 25 | 21 | 16 | 11 | 8 | 6 | 5 | |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Length (mm) |
MAX | 450 | 600 | 800 | 1000 | 1400 | 1500 | 1500 | 2000 | 3300 | 8000 | 12000 | 17000 |
Standard | 230 | 300 | 400 | 500 | 700 | 850 | 1100 | 1200 | 1000 | 1100 | 1000 | 1000 |
Materials | Purity(%) |
---|---|
AW, AX, EX, CY, EP, KT | 99.95 min. |
DW | 99.20 min. |
4N-W | 99.99 min. |
5N-W | 99.999 min. |