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

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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 mixed α/β-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 tables below list typical thermomechanical and electrical property, and corrosion resistance data for Syalon 050.

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Syalon 050 - Physical Property Data

PROPERTY
VALUE
UNITS
Composition
α/β-Sialon
-
Density
3.23
g/cc
Porosity
0
%
3-point MOR at 20°C ⁺
800
MPa
3-point MOR at 1000°C ⁺
750
MPa
3-point MOR at 1400°C ⁺
450
MPa
Creep Strain at 77 MPa
0.1
% ⁺⁺
Weibull Modulus
12
-
Compressive Strength
>3500
MPa
Young's Modulus
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 ⁺⁺⁺
3.2x10⁻⁶
K⁻¹
Thermal Conductivity
20
W/(mK)
Maximum Use Temperature
1450
°C
Thermal Shock Resistance
600
ΔT°C ⁺⁺⁺⁺
Electrical Resistivity
1012
Ω cm
⁺ Modulus of rupture specimen 3 × 3 × 50mm, span 19.05mm
⁺⁺ Creep strain at 1327°C for 50 hrs
⁺⁺⁺ Thermal expansion coefficient temperature range: 0-1200°C
⁺⁺⁺⁺ Quenched into cold water
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.
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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
Hydrofluoric 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
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Syalon 050 - Corrosion Behaviour in Molten Metals

METAL
TEMP (°C)
EXPOSURE TIME (HRS)
REACTION
Aluminium
950
1000
None
Brass
950
50
None
Copper
1150 (in air)
10
Strong ⁺
Copper
1150 (in vacuum)
10
None
Tin
300
100
None
⁺ Reacts with CuO
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.
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The successful integration of advanced technical ceramics into engineering systems requires close collaboration between you, the end-user, and ourselves, the material manufacturer. Please call +44(0)191 2951010 or email for an initial consultation with our technical sales team, or send us a Request for Quote.

In addition, see our resources section for guides on designing with ceramics and more property data comparing Syalon 050 with other engineering ceramics.