Tungsten is a non-ferrous metal and an important strategic metal. Tungsten ore was called "heavy stone" in ancient times. The content of tungsten in the earth's crust is 0.001%. There are 20 kinds of tungsten bearing minerals found. Tungsten deposits are generally formed with the activity of granitic magma. After smelting, tungsten is a silvery white and shiny metal with high melting point and great hardness. Atomic number 74. Steel gray or silver white, high hardness, high melting point, free from air erosion at room temperature; The main purpose is to manufacture filament, high-speed cutting alloy steel and superhard mold. It is also used in optical instruments and chemical instruments [tungsten; wolfram] - the filament drawn from the element symbol W. tungsten rod, which can be used as the filament in electric bulbs, electronic tubes and so on
| Product name | Tungsten rod |
| Grade | W1 |
| Executive standard | ASTM288 |
| Purity | ≥99.95% |
| Density | ≥19.3g/cm³ |
| Melting point | 3410℃ |
| Supply status | polished |
| Size range | φ0.3mm*Length |
| Production process | Sintering ----forging---- polishing---finished product |
Pure tungsten rod has special properties, such as low thermal expansion, good thermal conductivity, sufficient resistance to electricity and high elastic modulus. Therefore, tungsten rods are widely used in various fields. Such as support line, lead-in line, printer needle, various electrodes and quartz furnace, filament, high-speed tools, automotive automatic products, sputtering target
Rolling rods: Dark brown, the surface is smooth and straight, no defects (crackle, heavy skin, hole, trough, etc);
tungsten rods: Bright silver gray metallic luster. (process according to user's drawing, surface finish is higher)
90% wnimofe tungsten alloy (tungsten anviloy) is a sintered alloy containing high density and high strength with the ratio of 90% W4% Ni4% mo2fe. It is 50% of the density of PM products and lead series products. In this way, the tungsten alloy rod material has low coefficient of thermal expansion, good thermal conductivity and good material properties. At high temperature, tungsten alloy is a material with high melting point and low coefficient of thermal expansion. The addition of tungsten alloy elements improves machinability, toughness and welding. No heat treatment, low erosion, excellent heat-resistant cracking die, simple manufacture, it has been widely used in die casting.
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