Sialon - Physical and Mechanical Applications of Syalon 101

International Syalons Syalon 101 is the first of the Si-Al-O-N (sialon) family of ceramic materials which has been developed, characterised and is now being manufactured under carefully controlled conditions, ensuring the high quality material is consistently produced.

It is a general purpose engineering grade which is intended for applications demanding high strength, toughness, wear resistance and thermal shock resistance, where temperatures do not continuously exceed 1000°C, such as industrial wear, non-ferrous molten metal handling and metal forming.

Physical and Mechanical Properties of Syalon 101

The table below lists typical mechanical, thermal and electrical property data for Syalon 101.

Properties

Value

Units

3 point RT Modulus of Rupture (Specimen 3 x 3 x 50, 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

MPam1/2

Poisson’s Ratio

0.23

Density

3.23

g/cc

Porosity

0

%

Thermal Expansion Coefficient (0-1200°C)

3.04×10-6

K-1

Specific Heat

620

J/kg/K

RT Thermal Conductivity

21.3

W/m/K

Thermal Shock Resistance

900

ΔT°C quenched in water

Electrical Resistivity

10

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.

Chemical and Corrosion Resistance of Syalon 101

Syalon 101 is a candidate for many chemical and process and molten metal handling applications as a result of its excellent resistance to corrosion by many acids and alkalis and molten metals as shown in the tables below.

Acid / Alkali

Conc. %

Temperature

Exposure time / hrs

Reaction

Hydrochloric acid

33

Boiling

100

None

Nitric acid

69

Boiling

100

Weak

Sulphuric acid

98

Boiling

100

None

Hydrofluoric acid

100

Boiling

100

Strong

Sodium hydroxide

50

Boiling

100

None

Metal

Temperature / °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.

Applications of International Syalons Syalon 101

Syalon 101 is used in a wide range of applications such as thermocouple protection sheaths, heater tubes and ladles in non-ferrous molten metal handling, weld location pins and extrusion dies in metal forming, tappet shims in automotive applications, grinding media and de-watering foils in industrial wear and hydrocyclones and metering valves in the oil and gas industry.

Exploiting Advantages of Syalon 101 for Your Applications

The successful integration of ceramics into industrial and engineering systems requires close collaboration between you, the end-user, and ourselves, the material suppliers. Our Technical Specialists are available to discuss your requirements in detail and assist in exploiting the significant advantages which Syalon 101 has to offer.

This information has been sourced, reviewed and adapted from materials provided by International Syalons.

For more information on this source, please visit International Syalons.

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Comments

  1. Jonathan Sands Jonathan Sands United States says:

    i COULD HAVE SWORN THAT I HAVE READ, YEARS AGO, THAT SYALON CAN BE MANUFACTURED IN SUCH A WAY AS TO BE NON-CONDUCTIVE WHILE STILL MAINTAINING ITS STRENGTH, SUCH THAT IT COULD BE SHARPENED, AND USED, AS A CUTTING TOOL. AM I WRONG?

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