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Product name
High purity tungsten particles
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Product Description

Metal tungsten particles are used as an oxidizing flux for burning samples in infrared carbon and sulfur analyzers, which can help reduce the melting point of the sample and improve the release of carbon and sulfur.

Metal tungsten particles pure tungsten (w) C/S analysis flux C≥0.0008% S≥0.0003%
Packing: 2500g
Specification: -1180μm+850μm(-16~+20) -850μm+425μm(-20~+40) -425μm+250μm(-40~+60) -250μm+180μm(-60~+80)
Impurity content: C≤0.001% S≤0.0007% O≤0.05
To Tungsten particle flux is suitable for carbon and sulfur analysis of ordinary steel and alloy steel
Type A: C<0.008% S<0.005% Impurities<0.05% Granularity: -20~+440 mesh and -40~+60 mesh Net weight: 2500g/bottle and 3000g/bottle
Type B: C<0.0005% S<0.003% Impurities<0.05% Granularity: -20~+40 and -40~+60 mesh Net weight: 1000g/bottle and 2500g/ bottle

-1-Tungsten particles 20-40 mesh particle size Details of high purity tungsten particles:
1. The appearance is bright gray polyhedral particles.
3. Carbon, sulfur and oxygen requirements: C≤0.001%, S≤0.0007%, O≤0.05%.
2. It can be produced from 12 mesh to 100 mesh.

Application range: Mainly used as a co-solvent for carbon and sulfur analysis.
-2-. Tungsten particles 20-40 mesh particle size

The principle of high-purity tungsten particles:
Tungsten is the most difficult metal to melt, with a melting point of 3380°C. The reason why it is used as an additive is because tungsten is easily oxidized. Tungsten begins to oxidize and release a large amount of heat when oxygen is passed through at 650°C. It has the characteristics of high calorific value and fast reaction speed.
Tungsten should be called an additive, not a fluxing agent, because the role of additives is not only flux, but also heat generation, adjustment of medium acidity and alkalinity, stirring, catalysis, combustion stabilization, anti-interference and other multiple functions.

The oxidation product of tungsten trioxide is an acidic oxide with a loose volume. Its formation is conducive to the release of CO2 and SO2, and will not form a coating layer to cover the sample.

For non-magnetic materials, pure iron should be added.
Tungsten trioxide sublimates significantly above 900°C. Due to the escape of tungsten trioxide, the diffusion rate of carbon and sulfur is increased, so that the carbon and sulfur in the sample are fully oxidized.
After the volatilized tungsten trioxide leaves the molten pool, it transforms into a solid phase at 700-800°C, covering the remaining Fe2O3 in the pipeline to prevent the pipeline from adsorbing sulfur.
The blank value of tungsten is very low, and it can be used for the determination of low carbon and low sulfur. Generally, tungsten-tin is used as an additive in combination, and the main function of tin is to boost flux, reducing the influence of insufficient fluxing effect of tungsten.

Company Profile

Nantong Rongxin Electrical Control Technology Co., Ltd. is the former Rugao Shuguang Tungsten Molybdenum Material Co., Ltd. founded in 1984. It is mainly engaged in the R & D of electrical control technology, the production of electrical switch contacts, automobile horn contacts, automobile electrical contacts, and the sales of tungsten molybdenum materials and tungsten molybdenum products. In addition to being widely sold at home, the products are also exported to Europe, America and Southeast Asia, which fully meet the needs of different levels of domestic and foreign markets and enjoy a high reputation. The company has various advanced product testing equipment, including metallographic analyzer, spectrometer, tensile tester and ultrasonic flaw detector, which provides a guarantee for product quality. Nantong Rongxin adheres to market orientation, pays attention to scientific management, technological progress and sales service, accumulates several years of experience, establishes the factory with "quality", promotes the upgrading of enterprise products and improves quality. It has been awarded as a science and technology progress award by provinces and cities for many times. The company takes product quality as the enterprise life and users as the enterprise God. We sincerely welcome people from all walks of life at home and abroad to negotiate business and establish good cooperative relations.


1.Who are we?
We are based in Jiangsu, China, start from 2010,sell to South Asia(80.00%),North America(10.00%),Eastern Asia(10.00%). There are total about 51-100 people in our office.

2.How can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;

3.What can you buy from us?
Tungsten contact,Tungsten needle,Tungsten particle,Molybdenum wire,Tungsten rod

4.Why should you buy from us not from other suppliers?

5.What services can we provide?
Accepted Delivery Terms: FOB,EXW;
Accepted Payment Currency:USD,CNY;
Accepted Payment Type: T/T,L/C,D/P D/A,PayPal,Cash;
Language Spoken:English,Chinese

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