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SC0911 Silicon Nitride Welding Rod, Si3N4

Catalog No. SC0911
Size Diameter: 1~20mm
Material Si3N4 Ceramic
Purity 97%~99%
Density 3.44 g/cm3


Silicon Nitride Welding Rod Description

silicon nitride welding rodSilicon nitride welding rod is a man-made compound synthesized through several different chemical reaction methods. Due to the even performance in high temperatures, Si3N4 is a commonly used ceramic material in the metallurgical industry. It has excellent thermal shock resistance due to the microstructure. The creep and oxidation resistance of Si3N4 is also superior, its low thermal conductivity and high wear resistance also make it an outstanding material that can withstand conditions of most industrial applications.

There are 5 different methods to produce Silicon Nitride including SRBSN, GPSN, HPSN, HIP-SN and RBSN, make the application and working material different slightly. In these 5 methods of production, GPSN is most commonly used to produce Si3N4 components. You can find other silicon nitride Si3N4 ceramic parts here.

Silicon Nitride Welding Rod Specifications 


Color Grey
Mechanical Properties
Density 3.21 g/cm3
Compressive Strength 3000 MPa
Flexural Strength 800 MPa
Weibull-Modulus m 15
Fracture Toughness KIc 6.5 MPa m^1/2
Young’s Modulus E 320 GPa
Poisson Ratio 0.28
Hardness Vickers (HV 1) 16 GPa
Thermal Properties
Maximum Temperature (Inert Gas) 1200°C
Maximum Temperature (Air) 1100°C
Thermal Conductivity @ 20°C 28 W/mK
Thermal Conductivity @ 1000°C 16 W/mK
Thermal Expansion (20–100°C) 2*10-6/K
Thermal Expansion (20–1000°C) 3.510-6/K
Thermal Shock parameter R1 600 K
Thermal Shock parameter R2 15 W/mm
Electrical Properties
Resistivity at 20°C 10^12 Ωcm
Resistivity at 800°C 10^7 Ωcm
Dielectric constant 6 MHz


Silicon Nitride Welding Rod Applications

Silicon nitride welding rod  is ideal for applications with high dynamic stresses, thermal rigor, and demanding reliability requirements.


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SC0911 Silicon Nitride Welding Rod
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 1 reviews
by David Alderman on SC0911 Silicon Nitride Welding Rod

Individually boxed and shipped nicely. I will buy them from ACM again.