Syalon 101 – An Advanced Silicon Nitride Ceramic
Syalon 101 is an advanced silicon nitride based sialon ceramic offering outstanding mechanical strength, thermal shock resistance and corrosion resistance.
Syalon 101, a silicon nitride based advanced ceramic, is the first of the Si–Al–O–N family of engineering ceramic materials which has been developed, characterised and is now being manufactured under carefully controlled conditions, ensuring a high quality material is consistantly produced.
Syalon 101 is a beta-sialon type ceramic and is an outstanding engineering grade material which is characterised by high strength, toughness and hardness and chemical and thermal stability. It has found use in applications demanding wear, corrosion and thermal shock resistance, where temperatures do not continuously exceed 1000°C, such as industrial wear, non-ferrous molten metal handling and metal forming.
The table below lists typical mechanical, thermal and electrical property data for Syalon 101.
Physical property data for Syalon 101
| Property | Value | Units |
|---|---|---|
| 3 point RT Modulus of Rupture (Specimen 3 × 3 × 50mm, span 19.05mm) |
945 | MPa |
| Weibull Modulus | 11 | - |
| RT Unit Tensile Strength | 450 | MPa |
| RT Compressive Strength | >3500 | MPa |
| RT Young's Modulus of Elasticity | 288 | GPa |
| RT Hardness (HRA) | 92 | - |
| RT Hardness (Vickers Hv0.3) | 1500 | Kg/mm2 |
| Fracture Toughness K¹C | 7.7 | MPam½ |
| Poisson's Ratio | 0.23 | - |
| Density | 3.23 | g/cc |
| Porosity | 0 | % |
| Thermal Expansion Coefficient (0-1200°C) | 3.04X10-6 | K-1 |
| Specific Heat | 650 | J/kg/K |
| RT Thermal Conductivity | 28 | W/(mK) |
| Thermal Shock Resistance | 900 | ΔT°C quenched in cold water |
| RT Electrical Resistivity | 1010 | ohm m |
| RT Dielectric Constant | 8.1 | - |
| RT Loss Tangent (10GHz) | 0.0019 | - |
Typical physical property data obtained under test conditions. All properties have been measured by independent testing authorities. The values given only apply to the test bodies on which they were determined, and therefore can only be recommended values. See our disclaimer.
In addition to this outstanding property data, Syalon 101 also has excellent resistance to corrosion, often required for applications in the chemical and process industries.
The tables below show the corrosion resistant behaviour of Syalon 101 in various acids and alkalis and molten metals.
Syalon 101 corrosion behaviour in acids and alkalis.
| Acid/Alkali | Conc. % | Temp. | Exposure time / hrs | Reaction |
|---|---|---|---|---|
| Acetic Acid | 100 | Boiling | 100 | None |
| Benzoic Acid | 100 | Boiling | 100 | None |
| Formic Acid | 100 | Boiling | 100 | None |
| Hydrochloric Acid | 33 | Boiling | 100 | None |
| Hydrofluric Acid | 100 | Boiling | 100 | Strong |
| Nitric Acid | 69 | Boiling | 100 | Weak |
| Phosphoric Acid | 100 | Boiling | 100 | Weak |
| Sulphuric Acid | 98 | Boiling | 100 | None |
| Ammonium Chloride | 98 | Boiling | 100 | None |
| Potassium Chloride | 100 | Boiling | 100 | None |
| Sodium Chloride | 100 | Boiling | 100 | None |
| Sodium hydroxide | 50 | Boiling | 100 | None |
Syalon 101 corrosion behaviour in molten metals.
| Metal | Temp. / °C | Exposure time / hrs | Reaction |
|---|---|---|---|
| Copper | 1150 | 10 | Strong |
| Brass | 950 | 50 | None |
| Aluminium | 950 | 1000 | None |
| Tin | 300 | 100 | None |
Typical corrosion data obtained under test conditions. The values given only apply to the test bodies on which they were determined, and therefore can only be recommended values. See our disclaimer.
The successful integration of advanced technical ceramics into engineering systems requires close collaboration between you, the end-user, and ourselves, the material suppliers. Our Technical Department can be contacted to discuss your requirments in detail and assist in exploiting the significant advantages which silicon nitride based sialon fine ceramics offer.
In addition, see our resources section for guides on designing with ceramics and more property data comparing Syalon 101 with other engineering ceramics.
Alternatively download the Syalon 101 Property Data Sheet PDF.