Aluminium Nitride
Non-oxide ceramic with the highest thermal conductivity among electrical insulators (170–230 W/m·K). Excellent dielectric properties, CTE closely matching silicon wafers (4.5×10⁻⁶/K). Density 3.3 g/cm³, flexural strength 300–400 MPa, hardness 11 GPa. Alternative to toxic BeO in semiconductor packaging. Applications: power electronic substrates (IGBT, MOSFET), LED heat sinks, laser diode mounts, microwave components, electrostatic chucks.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇩🇪 | CeramTec | Germany | Alunit | — | % |
| 🇯🇵 | Kyocera | Japan | AN-230 | — | % |
| 🇬🇧 | Precision Ceramics | United Kingdom | PCAN1000/3000 | — | % |
| 🇯🇵 | Tokuyama | Japan | SH-15/SH-50 | — | % |
| 🇯🇵 | Maruwa | Japan | HA-230 | — | % |
Sources: ceramtec.com, kyocera.com, precision-ceramics.com, tokuyama.co.jp, maruwa-g.com
Mechanical properties
Compatibility verdict
Aluminium Nitride and Alunit: null% composition match
Related materials
Aluminium Oxide (Alumina) 99.5%
The most widely used engineering ceramic. Alpha-phase alumina (99.5% Al2O3) offers exceptional hardness (1440 HV), excellent dielectric properties, high compressive strength (2600 MPa), good thermal conductivity (35 W/m·K), and outstanding chemical resistance. Usable to 1750°C. Applications include wear pads, seal rings, substrates, thread guides, grinding media, furnace tubes, ballistic armor, and high-voltage insulators. Available in purities from 94% to 99.8%.
Zirconium Oxide (Zirconia) Y-TZP
Yttria-stabilized tetragonal zirconia polycrystal (3Y-TZP). The toughest engineering ceramic with transformation toughening mechanism. Exceptional flexural strength (900–1200 MPa), high fracture toughness (5–10 MPa·m½), density 6.05 g/cm³, elastic modulus ~200 GPa. Low thermal conductivity (2–3 W/m·K) makes it a good thermal insulator. Applications: precision bearings, cutting blades, dental implants, fuel cell components, wear-resistant parts, thread guides.
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.
All data is for reference only. Equivalents indicate similarity, not identity. Always verify against the applicable specification for safety-critical applications. materialref.com accepts no liability for decisions based on this data.