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Sialon welding pins

Sialon welding pins

Sialon alternative for Doceram and Ceramtec welding pins have a high strength, a high thermal shock / chemical / wear resistance, are low density ceramics used in non-ferrous molten metal handling.

With regards to Sialon ceramics, there is substitution of silicon by aluminum with corresponding atomic replacement of nitrogen by oxygen, to satisfy valency requirements.

The resulting ‘solution’ has superior properties to the original pure solvent, syalon, silicon nitride or Si3N4.

Silicon Nitride like ceramics (like ceramic welding pins) have found extensive use in non-ferrous molten metal handling, particularly aluminum and its alloys, including metal feed tubes for aluminum die casting, burner and immersion heater tubes, sialon welding pins, injector and degassing for nonferrous metals, thermocouple protection tubes, crucibles and ladles.

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Description

Sialon welding pins Sialon CeramicsBest Sialon welding pins at Affordable cost

We manufacture a comprehensive range of silicon nitride, sialon and zirconia advanced ceramics weld location and control pins (weld or welding pins). These are used to allow precise welding of nuts to sheet metal.

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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