5, Specific electrical: 0.055 Ohm x mm2/m resistance at 20 °C.
6, Modulus of elasticity: 410 kN/mm2, at 20 °C.
Tungsten is the most widely used of the refractory metals. In wire form, it is essential for the production of lighting products such as wire filament, and other goods where its high temperature properties are of use. Among its properties are a melting point of 3410° C, a low coefficient of thermal expansion and low vapor pressure at elevated temperatures, along with good electrical and thermal conductivity
Important applications of this metal wire are for the production of coiled incandescent lamp filaments, cathode and support structures for power tubes, heating elements for high temperature furnaces and evaporation sources in metallizing processes. Thicker wire sizes, straightened, finish-ground and cut into rod pieces are widely used for glass-to-metal seal lead parts in the lighting and electronic industries.
Test and check to ensure materials meet nondestructive testing technology destructive and according to industry and the customer's specifications.
More than10 year's experience, exported various of refractory products(tungsten molybdenum tantalum niobium) over than 2000 T yearly.
Manufacturing wire of high color lamp, wire of shockproof lamp and double-spiral wire
Manufacturing wire of incandescent lamp, cathode of transmitting tube, hyperthermia electrode and reaming tungsten wire
Manufacturing folding heating cord of electron tube
Manufacturing wire of fluorescent lamp
Manufacturing heating cord of electron tube, wire of incandescent lamp, and reaming tungsten wire
Manufacturing folding heating cord of electron tube, grid wire and cathode
Manufacturing reaming tungsten wire and heating components
Manufacturing grid side rod of electron tube and reaming tungsten wire
SHAANXI YUNZHONG INDUSTRY DEVELOPMENT CO.,LTD
Add :NO.128 Gaoxin road Baoji city Shaanxi province of China