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Syalon 050

Syalon 050 is an advanced silicon nitride (Si3N4) ceramic offering outstanding wear, corrosion, oxidation and high temperature creep resistant properties.

Syalon 050 tubine componentsSyalon 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 mixed alpha:beta-sialon 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
Composition α/β-Sialon -
Density 3.23 g/cc
Porosity 0 %
3 point Modulus of Rupture at 20°C
(Specimen 3 × 3 × 50mm, span 19.05mm)
800 MPa
3 point Modulus of Rupture at 1000°C
750 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 12 -
Young's Modulus of Elasticity 290 GPa
Poisson's Ratio 0.23 -
Hardness (HRA) 94 -
Hardness (Vickers Hv50) 19.81 (2020) GPa (Kg/mm2)
Fracture Toughness K1C 6.5 MPa m½
Thermal Expansion Coefficient (0-1200°C) 3.2X10-6 K-1
Thermal Conductivity 20 W/(mK)
Thermal Shock Resistance 600 ΔT°C quenched in cold water
Maximum Use Temperature 1450 °C
Electrical Resistivity 1012 ohm cm

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. Please contact our Technical Department 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. For a comparison of the physical properties of all our materials see our Material Properties Datasheet.

Download the Syalon 050 Property Data Sheet PDF (0.23 Mb).

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