2018年11月30日星期五

Eccentric Type Coil Tungsten Filament Price on Nov. 21, 2018

Eccentric type coil tungsten filament price is 2.88USD/PC on Nov. 21, 2018, EXW, Xiamen, China. The price of coil filament is not influenced by the raw material very much. These two weeks, the price of filament is remained the same and shows a little down because of better exchange rate.



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Black Tungsten Wire Price on Nov. 21, 2018

Ø0.6 black tungsten wire price is 69.20USD/KG on Nov. 21, 2018, EXW, Xiamen, China. Tungsten wire price is going down a little under the influence of decreasing tungsten raw material.


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Thorium Tungsten Electrode Price on Nov. 20, 2018

Ø1.6x150mm thorium tungsten electrode price is 0.400USD/PC on Nov. 20, 2018, EXW, Xiamen, China. The grade code for thorium electrode type is WT20, which is with 0.2% ThO2. It is widely used in arc welding.


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2018年11月6日星期二

Tungsten Vocabulary

Tungsten vocabulary gathers words of tungsten raw material, tungsten products, or words used during production.

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Tungsten Density

Density is analyzed as volumetric mass density to describe the weight/mass per unit volume of a substance. Tungsten density is the density of tungsten metals, such as pure tungsten metal density is 19.2g/cm3. It is shorted as ρ.

Ρ=m/v. this is a method to calculate the density of solid, powder or fluid. M is mass, is the weight of substance. V is volume for substance.

For solid metal, m can be weighted by scales. V can be calculated by Archimedes principle. But this method is not suitable for density testing of tungsten in powder shape. When to calculate density of tungsten powder, a bottle 1L is used. Let powder free fall down through a mesh, into the bottle, after the bottle is full, weight the bottle, minus bottle weight, then the final weight value is density of the powder.

As for tungsten is with high density, tungsten alloy and tungsten carbide products density will be lower when the content of tungsten is lower.

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Tungsten CAS Number

Tungsten CAS number is also written as tungsten CAS No. and tungsten CAS #, is a kind of number of describing different kind of materials.


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Tungsten HS Code

Tungsten HS code is harmonization system code, used to differ substances, such as tungsten, tungsten metal, tungsten powder, tungsten scrap, tungsten wire and others internationally.
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2018年11月2日星期五

Tungsten Granule Price on Oct. 31, 2018

Tungsten granule price is 65.00USD/KG on Oct. 31, 2018, EXW, Xiamen, China. Tungsten granule is made of pure tungsten material with irregular particles and is also called tungsten flux, tungsten accelerator, and tungsten granulate.


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Tungsten Bar Price on Oct. 31, 2018

Steel Melting Industry used tungsten bar price is 50.00USD/KG on Oct. 31, 2018, EXW, Xiamen, China. The price of tungsten bar is going up and down with the raw material. After increasing for a long time, the price remains stable now, and shows some decrease last week, now it is stable.

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Coil Tungsten Filament Price on Oct. 24, 2018

Coil tungsten filament price is 2.88USD/PC on Oct. 24, 2018, EXW, Xiamen, China. The price of coil filament is not influenced by the raw material very much. These two weeks, the price of filament is remained the same and shows a little down because of better exchange rate. 


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Cerium Tungsten Electrode Price on Oct. 31, 2018

Ø6.0x150mm cerium tungsten electrode price is 6.20USD/PC on Oct. 31, 2018, EXW, Xiamen, China. The grade code for cerium electrode type is WC20, which is with 0.2% CeO2. It is widely used in arc welding.


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