Syalon 050 – An Advanced Silicon Nitride Ceramic
Syalon 050 is an advanced silicon nitride based sialon ceramic offering outstanding wear, corrosion, oxidation and high temperature creep resistance.
Syalon 050 is a member of the Si-Al-O-N family, the first group of man-made ceramic alloys, and has been specifically designed for high performance under arduous wear conditions. Based on silicon nitride, Syalon 050 is an alpha-sialon type advanced ceramic and has been designed to have extreme hardness and chemical and thermal stability.
Syalon 050 is a speciality material which is intended for industrial wear applications in which excellent wear, corrosion and thermal resistance are required. It also has excellent high temperature properties, maintaining good mechanical strength up to 1400°C as well as chemical stability to many molten metals and acids and alkalis.
The table below lists typical mechanical, thermal and electrical property data for Syalon 050.
Physical property data for Syalon 050
| Property | Value | Units |
|---|---|---|
| 3 point RT Modulus of Rupture (Specimen 3 × 3 × 50mm, span 19.05mm) |
800 | MPa |
| 3 point Modulus of Rupture at 1400°C | 450 | MPa |
| Creep strain at 77MPa | 0.1 | % at 1327°C for 50 hrs |
| Weibull Modulus | 8-13 | - |
| RT Unit Tensile Strength | 450 | MPa |
| RT Young's Modulus of Elasticity | 306 | GPa |
| RT Hardness (HRA) | 94 | - |
| RT Hardness (Vickers Hv0.3) | 2000 | Kg/mm2 |
| Fracture Toughness K¹C | 6.5 | MPam½ |
| Poisson's Ratio | 0.27 | - |
| Density | 3.23 | g/cc |
| Porosity | 0 | % |
| Thermal Expansion Coefficient (0-1200°C) | 3.2X10-6 | K-1 |
| RT Thermal Conductivity | 20 | W/(mK) |
| Thermal Shock Resistance | 600 | ΔT°C quenched in cold water |
| RT Electrical Resistivity | 1010 | ohm m |
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.
Syalon 050 also has excellent resistance to corrosion. It's behaviour is very similar to Syalon 101 although slightly better, particularly in acids and alkalis. This excellent behaviour makes Syalon 050 particularly benificial in the chemical and process industries.
The tables below show the corrosion resistant behaviour of Syalon 050 in various acids and alkalis and molten metals.
Syalon 050 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 050 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 050 with other engineering ceramics.
Alternatively download the Syalon 050 Property Data Sheet PDF.