Si3N4/SiAlON

Explore Si3N4/SiAlON

TCT is Redefining Performance in Ceramics

TCT-SL-110 — SiAlON for HRSA & Cast Iron Applications

TCT-SL-110 is TCT’s premier SiAlON substrate, purpose-built for HRSA roughing, cast iron machining, and finishing operations where heat, pressure, and toughness converge.
This grade combines excellent thermal shock resistance with stable wear behavior, giving it the edge in both productivity and predictability. When cycle time and consistency matter most, SL-110 holds its geometry and keeps your parts in spec.

Best for:

Heat-Resistant Super Alloys (Inconel, Waspaloy, Rene alloys)
Gray & Ductile Iron Roughing and Finishing
High-heat, high-load operations

TCT-SL-090 — SiAlON for Toughness & Forgiveness

TCT-SL-090 was developed as a tougher SiAlON variant for roughing and interrupted-cut environments.
It excels where stability and edge integrity outweigh raw speed — ideal for cast iron and HRSA jobs with variable depth of cut or scale. The result: consistent wear, fewer failures, and reliable uptime.

Best for:

Interrupted HRSA cuts
Heavy-duty roughing in irons
Machining with variable engagement conditions

TCT-SN-260 — Silicon Nitride for Irons & Steel Mills

TCT-SN-260 is our flagship Si₃N₄ grade for high-speed cast iron machining and heavy industrial applications.
Originally developed for iron roughing, SN-260 has also shown exceptional promise in hard-turning geometries within steel mills — offering high edge strength, stable wear, and reliable performance under sustained heat.

Best for:

Gray, Ductile, and Chilled Irons
Continuous roughing at high SFM
Hard turning in steel-mill environments

TCT-SN-240 — Silicon Nitride for Maximum Toughness

TCT-SN-240 delivers when the job demands durability above all else.
This grade was designed to handle impact-heavy, interrupted cuts and maintain edge stability through repeated load cycles.
It combines the inherent toughness of Si₃N₄ with a microstructure optimized for strength and reliability — perfect for operations where tool failure simply isn’t an option.

Best for:

Intermittent cast iron cuts
Roughing large components
Heavy-load or unstable machining conditions

The TCT Ceramic Advantage

Every TCT ceramic insert is built from decades of real-world machining experience and refined through continuous testing in HRSA and cast-iron environments.
By combining SiAlON flexibility with Si₃N₄ toughness, TCT gives you a full spectrum of ceramic solutions — each one designed to push speed, endurance, and consistency further than ever before.

Ceramics reimagined. Performance redefined. Only from TCT.