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Graphite Fluxing (Degassing) Tubes

Sialon alternative to graphite impregnated fluxing tubes for degassing inert gases or active gases.

We offer a wide range of Sialon-gas inlet tubes for metal working. In these sectors, they find their application in Aluminum production, Brass Manufacturing and Precious metal manufacturing.

Our silicon nitride gas inlet tubes offer excellent performance and a good service life. We also offer an additional machining of the pipes for gas thread, nozzles and blind holes. Fluxing the molten metal with nitrogen is a simple and cost-effective way to ensure that the metal is gas free and avoids gas porosity; reduces the number of pores and foggy phenomena on the surface of the metal.

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Description

Graphite Fluxing (Degassing) Tubes

Fluxing the molten metal with nitrogen is a simple and inexpensive way to ensure that the metal is gas free and avoids gas porosity; reduces the number of pores and foggy phenomena on the surface of the metal.

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Sialon data sheet

Material data sheet Sialon (Si3Al3O3N5)
Typical Sialon grades NVD-001 NVD-002 NVD-003 NVD-004
Bulk Density g/cm3 3.2 3.1 3.3 3.2
Water Absorption 0 0 0 0
Flexural Strength MPa 580 900 1,020 790
Vickers Hardness HV1 GPa 13.9 12.7 15.0 13.8
Fracture Toughness (SEPB) MPam1/2 4 ~ 5 6 ~ 7 7 6 ~ 7
Young’s Modulus of Elasticity GPa 290 270 300 290
Poisson’s Ratio 0.28 0.28 0.28 0.28
Coefficient of Linear Thermal (40 – 800 °C)

Expansion

×10-6/℃ 3.2 3.4 3.3 3.5
Thermal Conductivity (20℃) W/(m・k) 25 23 27 54
Specific Heat J/(g・k) 0.64 0.66 0.65 0.66
Heat Shock Resistance 550 800 800 900
Volume Resistivity (20℃) Ω・cm >1014 >1014 >1014 >1014

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