Silicon Nitride
High-performance non-oxide ceramic with the highest fracture toughness among engineering ceramics (6–8 MPa·m½). Interlocking rod-like β-Si3N4 microstructure provides excellent thermal shock resistance. Flexural strength 690–830 MPa, density 3.27–3.29 g/cm³ (lightweight), thermal conductivity 29–30 W/m·K. Hardness 1450–1580 HV. Applications: precision bearing balls and rollers, cutting tools, turbocharger rotors, engine valves, metal forming dies, weld positioners.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇩🇪 | CeramTec | Germany | SN-80/-90 | — | % |
| 🇯🇵 | Kyocera | Japan | SN-235P | — | % |
| 🇺🇸 | CoorsTek | USA | Ceralloy 147-31N | — | % |
| IEC | INT | IEC 60672 C-935 | C-935 | % | |
| 🇯🇵 | Toshiba | Japan | TSN-03NH | — | % |
Sources: ceramtec.com, kyocera.com, coorstek.com, IEC 60672-3, toshiba-materials.co.jp
Mechanical properties
Compatibility verdict
Silicon Nitride and SN-80/-90: null% composition match
Related materials
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