BP27-bp tungsten rhenium wire

International Equivalent

Mark Analogue W. Nr. Aisi Uns En Order
Vr27VP WRe27 Delivery from the stock, in stock

Percentage composition

W Re Impurities
base 26,5-27,5 0,05

Tungsten alloys lead in the group of refractory materials, under normal conditions they do not react with any chemical substances and are widely used because of their refractory properties.

The physical properties of W

Description Value
Melting point 3695 °C (3422 °C, 6192 °F)[
Linear thermal expansion coefficient α [1/Hrad] 43x10-6
Density [g/cm3] 19,3
Tensile strength kg/mm2 35
Specific heat capacity at 20 °C [kJ/(kg-cold)] 0,134
Thermal conductivity K [W/(m-K) 300,173
Specific electrical resistance R Ohmxmm2/m 0,054

Rhenium. Physical properties

Description Designation
Atomic (molar) mass g/mol 186,2
Oxidation states 7, 6, 5, 4, 3, 2, -1
Density [g/cm3] 21,02
Melting point t ° C 3459 °C (3186 °C, 5767 °F)
Melt heat kJ/mol 34
Thermal conductivity K [W/(m-K) 48
Heat of vaporization kJ/mol 704

Production

Wire blanks are produced by powder metallurgy. First, a stack is obtained, after which it is heated, forged on a special rotary forging machine and rods with a diameter of 2-3 mm are obtained. subsequently, the rods are drawn into a thin yarn with a diameter of a few microns.

Application of

Grids, filaments, cathode warmers for electron-beam tubes; in thermionic generators and other similar devices are produced in electrical engineering, electronics. Thermocouples made from tungsten and rhenium alloys are used in measuring devices for the highest temperatures (around 2500°C). These are much more accurate than conventional molybdenum and tungsten thermocouples. Thermocouple wire is made of tungsten-rhenium alloy BP-27, BP-20 (rhenium - 20%), BAP-5 (tungsten-rhenium thermocouples are made in molybdenum or ceramic sheaths.

Supply

Supplier offers to buy rolled products of refractory alloys. From us you can buy tungsten-rhenium wire BP27-bp at an adequate price. You will be satisfied with the quality and price. For wholesale customers we offer tungsten-rhenium wire BP27-bp with a discount.

Certification

All products from supplier Evek GmbH are certified. The technical documentation contains data on composition, mechanical quality and impurity content. The price is the best in this segment of rolled products.

Buy, price from the supplier.

Tungsten wire BP27-bp from supplier Evek GmbH can be purchased in bulk or retail. The site reflects the price and range of products to date. Excellent product quality and adequate price - the face of the supplier Evek GmbH. Regular customers can buy tungsten wire BP27-bp, taking advantage of a discount system from the company Evek GmbH. Delivery is made from the warehouses located.