Technical Data
Silicon Nitride
![Silicon Nitride image](../../../image2018/material/silicon_nitride/silicon_nitride_pic01.png)
Silicon nitride, mainly consisting of Si3N4, has excellent thermal shock resistance and high-temperature strength. These properties make it ideal for use in automotive engines and gas turbines. It is used for turbocharger rotors, glow plugs and hot plugs in diesel engines, and is being applied in many other diverse applications.
Related products for Silicon NitrideFeatures
Silicon nitride has high strength and fracture toughness at high temperatures.
It is used as a high-temperature structural component for automotive engines, gas turbines and combustor parts.
Silicon nitride has a low coefficient of thermal expansion and extremely high thermal shock resistance.
Configuration
Dimensional precision achieved by machining
When dimensional precision is required for machined ceramics, Kyocera is capable of achieving the tolerances as shown in the table below. If greater tolerances are required, please consult us.
MACHINING DIMENSIONAL PRECISION
(Data are in mm unless otherwise specified)
1.Ground ceramic blocks and plates
![Standard tolerance chart of round and square bars](../../../image2018/material/silicon_nitride/silicon_nitride_table01.png)
2.Round and Square Bars
![Standard tolerance chart of round and square bars](../../../image2018/material/silicon_nitride/silicon_nitride_table01.png)
PRECISION MACHINED PRODUCTS
Ultra-precision is possible with Kyocera's unique techniques.
Precision machining is affected by shape and material.
Some practical examples are shown in the table below.
![Machining accuracy chart of shape and material](../../../image2018/material/silicon_nitride/silicon_nitride_table02.png)
* Surface roughness depends on the material. The data shown here indicates where alumina is used.
Property
![Property](../../../image2018/material/silicon_nitride/silicon_nitride_table03.png)
* The values are typical material properties and may vary according to products configuration and manufacturing process. For more details, Please feel free to contact us.
* 1: All values for apparent density and bulk density are the same, except for A482R which lists apparent density only.
![Bulk density chart](../../../image2018/material/silicon_nitride/silicon_nitride_graph01.png)
![Hardness chart](../../../image2018/material/silicon_nitride/silicon_nitride_graph02.png)
![Flexural strength chart](../../../image2018/material/silicon_nitride/silicon_nitride_graph03.png)
![Compressive strength chart](../../../image2018/material/silicon_nitride/silicon_nitride_graph04.png)
![Young's modulus chart](../../../image2018/material/silicon_nitride/silicon_nitride_graph05.png)
![Flexural strength vs. temperature chart](../../../image2018/material/silicon_nitride/silicon_nitride_graph06.png)
![Thermal expansion chart](../../../image2018/material/silicon_nitride/silicon_nitride_graph07.png)
![Thermal conductivity chart](../../../image2018/material/silicon_nitride/silicon_nitride_graph08.png)
![Heat shock resistance chart](../../../image2018/material/silicon_nitride/silicon_nitride_graph09.png)
![Chemical resistance chart (30 min boiling)](../../../image2018/material/silicon_nitride/silicon_nitride_graph11.png)
![Unit conversion table of stress & Unit conversion table of thermal conductivity](../../../image2018/material/silicon_nitride/silicon_nitride_graph12.png)