Sialon ceramic cutting tools

New class sialon cutting tools at competitive prices and quality warranty.

The superior performance of our ceramics is derived from high quality raw materials, unique chemical composition and manufacturing technology and now used for the production of sialon cutting tools

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.

10 in stock (can be backordered)

Please describe in detail your request for quotation:


Sialon AC-50 with superior performance is derived from a unique combination of hardness, toughness and strength not found in standard syalon or silicon nitride-based tools.

The newly developed Sialon ceramic cutting tools AC-50 series is ideal for turning and milling of all classes of cast iron.We offer a comprehensive range of sialon cutting tools. The company’s newest product AC-50 is the latest in silicon nitride based cutting tools ideal for all classes of cast iron.

New class of Sialon ceramic cutting tools:

Silicon nitride and SiAlONs are the materials possessing unique combination of fracture toughness, hardness and strength and have potentials to be used in many industries.

A strive to further increase the reliability of these Sialon ceramic cutting tools lead to the use of many sintering aids and densification methods involving pressure and pressureless sintering. The problem associated with fabrication of these ceramics has been how to impart high fracture toughness and, at the same time, retain high hardness and strength.

Sialon Ceramics Ltd has been a manufacturer and distributor of Silicon Nitride ceramics for the molten alumiium and non-ferrous industry since 1986. We have offices in Great Britain (London) and in Denmark (Copenhagen). Please ask here for your request for quotation online.

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)


×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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