Si3n4 - Materials - Technical
Silicon Nitride (Si3N4)
SPB Products made from this material
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.
|Volume Resistivity||Ohm.cm||1012 to 1015 @ 25 oC|
|Compressive Strength||MPa||2000 to 3500|
|Hardness||kgf.mm2||1580 to 2200|
|Tensile Modulus||GPa||280 to 310|
|Tensile Strength||MPa||400 to 580|
|Shear Strength||MPa||480 to 960|
|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|
|Alkalis||Poor to Good|
|Greases and Oils||Good|
Products made with Silicon Nitride can be found in the Small Parts & Bearings Silicon Nitride online catalogue.
For a huge range of bearings online please visit the Bearing Shop Online Website.
Hobby and Engineering Supplies lists a smaller range of products and only the most popular items in each range. They also list many additional hobby specific categories.
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.
Extra information for Technical - Materials
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