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SYALON 101

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Syalon 101 is an advanced silicon nitride (Si₃N₄) ceramic offering outstanding mechanical strength, thermal shock resistance and corrosion resistant properties.

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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 consistently produced.

Syalon 101 is a β-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, chemical and process, oil and gas, non-ferrous molten metal handling, and metal forming.

The tables below list typical thermomechanical and electrical property, and corrosion resistance data for Syalon 101.

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Syalon 101 - Physical Property Data

PROPERTY
VALUE
UNITS
Composition
β-Sialon
-
Density
3.24
g/cc
Porosity
0
%
3-point MOR at 20°C ⁺
945
MPa
3-point MOR at 1000°C ⁺
700
MPa
Weibull Modulus
15
-
Compressive Strength
>3500
MPa
Young's Modulus
288
GPa
Poisson's Ratio
0.23
-
Hardness (HRA)
92
-
Hardness (Vickers Hv50)
14.71 (1500)
GPa (Kg/mm²)
Fracture Toughness (K₁c)
7.7
MPa m½
Thermal Expansion Coefficient ⁺⁺
3x10⁻⁶
K⁻¹
Thermal Conductivity
28
W/(mK)
Specific Heat
650
J/kg/K
Thermal Shock Resistance
900
ΔT°C ⁺⁺⁺
Maximum Use Temperature
1200
°C
Electrical Resistivity
10¹²
Ω cm
Dielectric Constant
8.1
-
Loss Tangent (10GHz)
0.0019
-
⁺ Modulus of rupture specimen 3 × 3 × 50mm, span 19.05mm
⁺⁺ 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 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
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 101 - Corrosion Behaviour in Molten Metals

METAL
TEMP (°C)
EXPOSURE TIME (HRS)
REACTION
Aluminium
950
1000
None
Bismuth
800
10
None
Brass
950
50
None
Cadmium
550
50
None
Cast iron
1450
2
Slight
Copper
1150 (in air)
10
Strong ⁺
Copper
1150 (in vacuum)
10
None
Lead
400
200
None
Magnesium
750
100
None
Stainless steel
1450
10
Strong
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 101 with other engineering ceramics.