Si3n4 - Materials - Technical

Silicon Nitride (Si3N4)

HES Products made from this material
Balls, Bearings

Silicon Nitride Ceramic is a dark grey ceramic having almost no porosity. It is a very hard but lightweight material with very good wear and abrasion resistance. It can withstand very high temperatures and maintains good hardness and strength above 1000oC. It has very good thermal shock resistance due to the low thermal expansion. Silicon Nitride can be used as an electrical insulator. It has excellent chemical resistance.

Physical Properties
PROPERTY UNIT VALUE
Volume Resistivity Ohm.cm 1012 to 1015 @ 25 oC
Compressive Strength MPa 2000 to 3500
Hardness kgf.mm2 1580 to 2200
Porosity % 0
Tensile Modulus GPa 280 to 310
Tensile Strength MPa 400 to 580
Shear Strength MPa 480 to 960
Flexural Strength MPa 830
Elastic Modulus GPa 310
Poisson’s Ratio   0.27
Density g/cm3 3.11 to 3.29
Thermal Conductivity W/m.oK 15 to 43 @ 20oC
Coefficient of Thermal Expansion 10-6/oC 3.3
Max. use temperature (unloaded) oC 1000 to 1500
Electrical Resistivity ohm/cm >106 @ 500oC
Electrical Resistivity ohm/cm 105 @ 2000oC

Chemical Resistance
Chemical Resistance
Acids (Concentrated) Fair
Acids (Dilute) Good
Alcohols Good
Alkalis Poor to Good
Greases and Oils Good
Halogens Good

Products made with Silicon Nitride can be found in the Hobby and Engineering Supplies Silicon Nitride online catalogue.


For a huge range of bearings online please visit the Bearing Shop Online Website.

The Small Parts and Bearings has a much larger range of engineering supplies.

For the best range of miniature and small bearings please try the Miniature Bearings Australia website. Miniature Bearings Australia also list a large variety of miniature engineering products.



Other pages related to Technical - Materials

Click Page Banner Below

Top

Other Technical Pages

Click Page Banner Below

Top

Main Pages

Click Page Banner Below

Top





Top



Freight Rates
Terms and Conditions
Privacy Policy

Hobby and Engineering Supplies offers 2678 products in 281 categories including spare parts for remote control cars, assortment kits, kites, styrene, depron, ceramic and ceramic hybrid bearings, bearings, tools, belts and adhesives - see the full listing in the Online Catalogue. We have excellent Freight Rates within Australia and worldwide. We offer a choice of delivery with a signature required, or cheaper options with no signature required. The no signature required options are at the customer’s risk once the goods leave our store.

Using the links throughout this site you will find extensive information including catalogues, technical data, and other product specific information. We sell our products worldwide through our online store and our overseas freight rates are competitive for fully traceable courier delivery.

Hobby and Engineering Supplies is part of MBA Group offering a select range from the MBA Group catalogue.

Hobby and Engineering Supplies products are not authorised for sale into the USA or Canada due to the reluctance of Australian insurers to provide product liability insurance into those two countries.

Information on this website is Copyright Hobby and Engineering Supplies 1997. All rights reserved.