Data Sheet Nilcra® SiAlON E

Description  A Gas Pressure Sintered Silicon Nitride with exceptional strength and toughness.  Contains interlocking grains of beta phase silicon nitride.  Designed for applications requiring high strength, toughness and wear resistance.

Prime Features Specifications  High Strength at ambient & high temperature • Quality Assurance to ISO 9001  Excellent fracture toughness  Extremely high hardness & wear resistance  Low coefficient of thermal expansion Typical Applications:  Good thermal shock resistance  Excellent for combating wear and  Excellent corrosion resistance corrosion in valves, pumps and liners  Non-wetting in molten metal used in chemical processing and  Low oxidation at elevated temperatures refining environments

 Successfully used for a wide variety of Physical Properties tooling used in metal forming and dry

cell battery production Colour Black 3 o Density g/cm 20 C 3.21 Production Capabilities Flexural Strength MPa 20oC 650  Sintered components 1200oC 450  Precision ground components Weibull Modulus 20oC 15  Ceramic / Metal assemblies Compressive Strength MPa 20oC 3000  Ceramic design assistance Modulus of Elasticity GPa 20oC 320  Prototyping, batch and volume Poisson’s Ratio 20oC 0.28 production Hardness HV0.3 kg/mm2 20oC 1630

Hardness Rockwell 45N 20oC 85

Fracture Toughness MPa√m 20oC 8

Average Grain Size µm 1-10

Thermal Conductivity W/m-K

20oC 25

1000oC 15

Thermal Expansion Coefficient 25-1000oC 3.2 x10-6 mm/mm/˚C

Please note that all values quoted are based on test pieces and may vary according to component design. These values are not guaranteed in anyway whatsoever and should only be treated as indicative and for guidance only.

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