How to identify tungsten wire
Offer to buy tungsten wire from specialized warehouses supplier Evek GmbH with delivery to any city. Full compliance with modern quality requirements. Supplier Evek GmbH offers to buy tungsten wire, the price is optimal in this segment of the metal. Timely delivery is provided by offices in the cities of Eastern Europe.
|Mark||Additives||The purpose of the introduction of additives|
|VA||Si + Al||The temperature rise of the primary recrystalization, strength after annealing, dimensional stability|
|VM||Si + Th||The growth temperature of recrystalization and strength gain.|
|W||ThO2||The increase in the emission properties of tungsten|
|BP||Re||The increased ductility of tungsten after high temperature treatment, increasing the temperature of primary recrystallization, strength|
|VRN||the high content of impurities||-|
|MV||Mo||Increasing the strength while maintaining ductility after annealing|
Tungsten wire is made from powder shtabikov that rolled on a rotary forging machine. Get a rod with the help of drawing in the sky, a tungsten wire with a diameter of 1 — 3 mm. Wire with smaller diameter is called a thread. It can also be produced with addition of chromium, cobalt, carbon. The strength of its increases. Drawn tungsten wire groups A, B, C (black), brand WA, HF, VRN, also manufactured by way of powder metallurgy.
Percentage composition, GOST 19671−91
|VA||≤ 0.005||0.001 — 0.006||≤ 0.03||min 99.95||0.001 — 0.004||≤ 0.005|
|VRN||≤ 0.01||0.001 — 0.01||≤ 0.04||min 99.9||0.0010 — 0.01||≤ 0.02|
Mark WM GOST 19671−91
|min 99.7||≤ 0.05||0.17≤ Th Oxide ≤ 0.25|
Mark WM used in x-ray technology and electronics, for manufacturing heaters and cathodes for electronic devices that are designed to operate in conditions of vibration, shock, t° 2100 °C. of the wire is made VRN cathodes of gas-discharge and electronic devices, bushings and other parts that do not require tungsten with special additives. Tungsten filament for lighting devices made in accordance with GOST 19 671−91 with a diameter of 19.5 microns — 1.5 mm. This wire is used for the production of surgical instruments, parts of missiles, aircraft, textile machinery.
To buy, best price
Supplier Evek GmbH offers to buy refractory alloys, the price is determined by the technological features of production without the inclusion of additional costs. On the company’s website shows information about latest product arrivals. We have the best price and quality for tungsten and other high-temperature metals. In the segment of rare and refractory metals the company Evek GmbH — best supplier.