The latest price of W80Cu20 φ60x100mm tungsten copper rod is USD339.00/PC on May 26, 2022, EXW XIAMEN, CHINA.

What is Tungsten Copper Alloy?

Tungsten-copper alloys are pseudo-alloys of copper and the refractory metal tungsten. Since copper and tungsten are immiscible, the material consists of different particles of one metal dispersed in a matrix of another metal. As a result, the microstructure is a metal matrix composite rather than a true alloy.

Characteristics of Tungsten Copper Alloy

It combines the properties of two metals to form a material that is heat, ablation resistant, highly thermally and electrically conductive, and easy to process. It is also resistant to arc corrosion, mechanical wear and contact welding. Parts are made from tungsten copper alloy by pressing tungsten particles into the desired shape, sintering the compacted part, and finally infiltrating it with molten copper.

Tungsten Copper Alloy Grades

Common grades of this alloy contain 5% copper to 50% copper with tungsten in balance. The typical properties of an alloy depend on its composition. Alloys with less copper have higher density, higher hardness, and higher resistivity. Typical densities are 17.3 g/cm3 for WCu10 alloy and 12.2 g/cm3 for WCu50 alloy. WCu10 alloy has higher hardness and resistivity than WCu50 alloy of 260 HB kgf/mm2 and 6.5 µΩ.cm.

Tungsten Copper Alloy Applications

Tungsten copper products are meeting the increasing demands of high-tech applications, such as major electronic equipment, safety equipment, aviation and power generation, etc. Sheets and plates made from copper-tungsten alloys are used in many industries, including aerospace and power generation. Heat exchanger and cooler elements in electronic equipment as well as passive heat sinks, arches and vacuum contactors in high current equipment are made of this alloy.

More product details please visit:http://www.tungsten-copper.com/index.html

The latest price of 1KG tungsten alloy gold bar is USD500.00/PC on May 20, 2022, EXW XIAMEN, CHINA.

The latest price of 95%W φ7.94x50.8mm tungsten dart billet is USD3.50/PC on May 20, 2022, EXW XIAMEN, CHINA.

The latest price of 15G tungsten putty is USD1.70/PC on May 20, 2022, EXW XIAMEN, CHINA.

The latest price of W80Cu20 φ60x100mm tungsten copper rod is USD339.00/PC on May 20, 2022, EXW XIAMEN, CHINA.

The latest price of Φ35xφ25x50mm tungsten crucible is USD70.00/PC on May 19, 2022, EXW XIAMEN, CHINA.

What is Tungsten Crucible?

Tungsten crucible is a high-temperature resistant container made of tungsten that is used to hold liquid materials that are elevated to high temperatures, often for material testing and evaluation purposes. Its regular shape is cylindrical, and the diameter is between 10mm and 500mm. The height is between 10mm and 750mm, and the wall thickness is between 8mm and 20mm.

Characteristics of Tungsten Crucible

The characteristics of tungsten crucible include high specific gravity, high melting point, high boiling point, low vapor pressure, small evaporation rate, low thermal expansion coefficient, corrosion resistance, wear resistance, good thermal conductivity, etc. According to different production processes, tungsten crucibles can be formed by forged, sintered, welded, punched and rotary pressed. Its density ranges from 18.5g/cm3 to 19.2g/cm3.

How to Produce Tungsten Crucible?

The producing processes of tungsten crucible include mixing powders, isostatic pressing, forming, sintering and machining. Four different tungsten powders with particle size in the range of 1.0~5.0um are used for ingredients; the isostatic pressure is about 200MPa, and the holding time is about 7 minutes; the sintering temperature is about 2300°C, and the sintering time is about 7 hours.

Tungsten Crucible Applications

As a high-temperature resistant container, tungsten crucible is mainly used in rare earth metal smelting furnace, quartz glass melting furnace, induction furnace heating element, single crystal furnace high temperature container, sapphire single crystal growth furnace, high temperature vacuum furnace and other industrial furnaces. Its working temperature is generally above 2000°C. Normally, tungsten crucibles should no internal cracks, have accurate dimensions, and smooth inner and outer walls.

More product details please visit:http://www.tungsten.com.cn/tungsten-crucible.html

The latest price of φ0.8mm tungsten filaments for electron microscopes is USD 2.00/PC on May 19, 2022, EXW XIAMEN, CHINA.

What is Tungsten Filaments?

Tungsten filaments, also called cathodes or electron emitters or electron sources, are mainly made of high-quality tungsten. Of all pure metals, tungsten has the highest melting point (3422°C), the lowest vapor pressure at temperatures above 1650°C, and the highest tensile strength. Tungsten also has the lowest coefficient of thermal expansion of all pure metals. This combination of properties makes tungsten an ideal material.

Why Tungsten Filaments Are Used in Electron Gun?

Tungsten can be used in both thermionic electron guns and field-emission (CFE) electron guns. Electron beams come from filaments made of various materials. The most common is the tungsten hairpin gun, which is widely used in scanning electron microscopes, transmission electron microscopes, and microprobe systems. This filament is a tungsten ring that acts as a cathode. Apply voltage to the loop to heat it up. The anode, which is positive relative to the filament, forms a strong attraction to electrons. This causes electrons to be accelerated towards the anode. Some accelerate near the anode and down the column to the sample.

Why Are Tungsten Filaments in the Electron Gun Folded?

An electron gun works at a high temperature, which is required for thermionic emission. For this, a filament or the cathode should be of a material that has a high melting point in order for it to continuously emit electrons. Tungsten filament is folded with various shapes to help in focusing the electron beam.

More product details please visit:http://www.tungsten.com.cn/tungsten-heater.html

The latest price of φ3.2x175mm TIG welding cerium tungsten electrode is USD 2.00/PC on May 19, 2022, EXW XIAMEN, CHINA.

What is Cerium Tungsten Electrode?

Cerium tungsten electrode (WC20) is alloyed with about 2% cerium oxide. It is a non-radioactive, refractory or non-consumable metal electrode material, which is the preferred substitute for thorium tungsten electrodes. Regular diameter of the electrode is between 0.5mm and 12.0mm, and the length is 150mm and 175mm.

Characteristics of Cerium Tungsten Electrode

The addition of this small percentage of cerium oxide increases the electron emission qualities of the electrode which gives them a better starting characteristic and a higher current carrying capacity with no spitting. With the increase of cerium oxide content, the ablation resistance and arc starting of cerium tungsten electrode will increase; with the increase of use time, the welding performance will gradually decrease.

Cerium Tungsten Electrode Applications

The electrode has excellent arc starting properties at low current, and can operate successfully with AC or DC electrode negative. If used on higher current applications, the cerium oxide may be concentrated to the excessively hot tip of the electrode. In addition, WC20 is also used in inert gas shielded arc welding, hydrogen atom welding, argon arc surfacing, pulse argon arc welding, plasma welding, plasma cutting, plasma spraying, plasma melting, etc. The welding materials can be carbon steel, stainless steel, silicon copper, copper, bronze, titanium and so on.

More product details please visit:http://www.tungsten.com.cn/cerium-tungsten-electrodes.html

What is Nano Yellow Tungsten Oxide?

Yellow tungsten oxide (WO3, Nano Yellow Tungsten Oxide) is an oxide of tungsten with a yellow powder appearance. Two different particles of yellow tungsten oxide are different in size and show different colors. When the crystal size is about 1.5um, it appears yellow; when the crystal size is about 15um, it appears green. Although the appearance is different, the characteristics are similar.

Physical Properties Of Nano Yellow Tungsten Oxide:

Physical properties: yellow or bright green, finely divided yellow crystal powder, loose specific gravity 2.3~2.8g/cm3.

Appearance and characteristics: yellow powder, stable at room temperature, the product passes through 80 mesh screen.

Nano Yellow Tungsten Oxide Application:

1. As an important intermediate in tungsten metallurgy industry, yellow tungsten oxide is widely used in metal tungsten powder and tungsten carbide powder, and then used in the production of metal tungsten products.

2. Part of yellow tungsten oxide is used in the production of chemical products, such as tungstate; due to its rich yellow color, it is used as a pigment for ceramics and paint production; it has catalytic properties and is used in petroleum industry catalysts, etc.

3. Fireproof fabrics and gas sensors for industrial X-ray screen phosphor production.

4. It has semiconductor photocatalytic properties and has been extensively studied as a photocatalyst (photocatalyst).

Nano Yellow Tungsten Oxide Packaging:

25kg or 50kg net weight, packed in double-layer polyethylene plastic bags inside, and plastic drums/iron drums as outer packaging; vacuum packaging or other net weight requirements, or the order weight is less than the standard packaging specifications, customized according to the actual situation; conventional packaging is Product name + batch number and other neutral text printing//writing, if you need personalized content, you can also customize.

More product details please visit: tungsten-oxide.com

What is Nano Tungstic Acid?

Nano tungstic acid usually refers to nano yellow tungstic acid, an amorphous yellow powder. The properties of tungstic acid in water and acidic solutions are relatively stable, almost insoluble in water, soluble in alkali, slightly soluble in acid, but can react with water. And exist in a certain colloidal form. When tungstic acid is heated to 100°C, it loses a molecule of water and turns into tungsten trioxide. It is almost insoluble in acid, slightly soluble in hot water, and exhibits stable properties at temperatures below 150°C; In strong alkaline solutions, ammonia and hydrofluoric acid.

Chemical formula of nano tungstic acid: H2WO4 or WO3·H2O

Physical Properties Of Nano Tungstic Acid:

Appearance color: light orange-yellow powder, insoluble in water.

Purity: ≥99.9%

Average particle size: 30~50nm

Melting point: 1473℃

Nano Tungstic Acid Application:

Due to its unique properties, tungstic acid was used as the most important and high-purity intermediate compound in the tungsten metallurgical industry in the early days. At present, most of its functions have been replaced by ammonium paratungstate (APT). Raw material of tungsten trioxide; raw material of submicron tungsten powder and some tungsten compounds, used as pigment in yellow glaze, as colorant for yellow ceramics, etc.

Nano Tungstic Acid Packaging:

25kg or 50kg net weight, packed in double-layer polyethylene plastic bags inside, and plastic drums/iron drums as outer packaging; vacuum packaging or other net weight requirements, or the order weight is less than the standard packaging specifications, customized according to the actual situation; conventional packaging is Product name + batch number and other neutral text printing//writing, if you need personalized content, you can also customize.

More product details please visit: tungstic-acid.com