Tungsten Granule Carbon and Sulfur Content
The application of tungsten granule is as flux for testing carbon and sulfur, so the content of granule C and S should be the less the better. Or the sample testing result will be not exact. C≤0.0008% and S≤0.0005% are two idea data for tungsten flux.
Carbon and sulfur are two important factors to judge the quality of steel and iron. Content of iron carbon is over 2%, but steel is under 2%. Carbon content of steel over 0.6% is called high-carbon steel, 0.25%~0.60% is medium carbon steel, and under 0.25% is low carbon steel. Content less than 0.03% is called industrial pure iron.
Carbon is a main element in steel, which will influence the quality a lot. The increasing of carbon content will lead to increase of steel hardness and strength, but decease toughness and ductility. On the contrast, the going down of C content will result in lower down hardness and strength, but high ductility and toughness.
Sulfur is a harmful to steel, which will lower down steel quality, mechanical properties, erosive resistance and weldability. At 1000℃, S will be FeS and make steel cracking, so the lifetime of steel will be decreasing a lot. Therefore, the content of sulfur required as low as possible. Common steel requires sulfur content under 0.050%, tool steel under 0.045%, and high quality steel 0.020%.
It is because of the importance of carbon and sulfur, the testing result of C and S will be a significant value to judge the quality of steel. Tungsten granule is only used for accelerating the testing speed, its carbon and sulfur content should not influence the testing result.
If you have got any interest in tungsten granule, please feel free to contact Chinatungsten.
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