ATC-CB04 Material Composition
ATC-CB04 is Alumina (Al2O3) Based ceramic Material. Alumina ceramics are a kind of alumina （AL2O3） as the main base of the ATC-CB04 Material, according to alumina purity can be divided into high purity type and common type two, the use is also different.Alumina comes in different configuration like（95%to99.99% Al2O3).99.99 Alumina ceramic/99.9 Alumina ceramic/99.7 Alumina ceramic/99.5 Alumina ceramic/99 Alumina ceramic/97 Alumina ceramic/95 Alumina ceramic. Selection of right grade depends on application conditions.
| Items | Unit | 99.8% Al2O3 | 99% Al2O3 | 95% Al2O3 | 3Y-TZP | Mg-PSZ | Nano 3Y-TZP | Si3N4 |
|---|---|---|---|---|---|---|---|---|
| Color | Ivory | Light Yellow | White | Ivory | Golden Yellow | Blue | Black/Gray | |
| Density | g/cm³ | 3.99 | 3.85 | 3.7 | 6.02 | 5.7 | 6.1 | 3.2 |
| Bending Strength | MPa | 370 | 310 | 300 | 1200 | 450 | 1200 | 750 |
| Compressive Strength | MPa | 2500 | 2400 | 2300 | 2000 | 1500 | 2500 | 3000 |
| Elastic Modulus | GPa | 390 | 340 | 320 | 200 | 250 | 220 | 300 |
| Fracture Toughness | MPa·m¹/² | 4 | 3–4 | 3–4 | 8 | 6–7 | 14 | 7 |
| Weber Coefficient | m | 1.2 | 1.4 | 1.4 | 15 | 12 | 15 | 10 |
| Vickers Hardness | HV 0.5 | 1850 | 1600 | 1400 | 1200 | 1100 | 1250 | 1500 |
| Coefficient of Linear Thermal Expansion | 10⁻⁶/K | 7.8 | 7.9 | 8 | 10.3 | 10.2 | 10 | 2.9 |
| Thermal Conductivity | W/m·K | 32 | 29 | 28 | 3 | 3 | 2 | 20 |
| Thermal Shock Resistance (Put in Water) | ΔT °C | 280 | 200 | 150 | 200 | 250 | 200 | 300 |
| Max Working Temperature (in Air) | °C | 1700 | 1600 | 1500 | 1000 | 1000 | 1000 | 1000 |
| Volume Resistance at 20°C | Ω·cm | >10¹⁴ | >10¹⁴ | >10¹⁴ | >10¹³ | >10¹⁴ | >10¹³ | >10¹³ |
| Dielectric Strength | V/m | 15×10⁶ | 15×10⁶ | 15×10⁶ | 13×10⁶ | 13×10⁶ | 13×10⁶ | 10×10⁶ |
| Dielectric Constant | ε | 9.5 | 9.5 | 9.5 | 33 | 28 | 33 | 8 |
| One MHz Dielectric Loss Angle at 20°C | tanδ | 0.0001 | 0.0002 | 0.0004 | 0.001 | 0.0017 | 0.0016 | 0.006 |
| Nitric Acid (90%) 80°C | WT Loss mg/cm²/day | 0.24 | 0.32 | 0.43 | 0.02 | 0.04 | 0.03 | 1 |
| Sulphuric Acid (95%) 95°C | WT Loss mg/cm²/day | 0.32 | 0.34 | 0.56 | 0.04 | 0.31 | 0.03 | 0.5 |
| Caustic Soda (30%) 80°C | WT Loss mg/cm²/day | 0.04 | 0.05 | 0.09 | 0.08 | 0.05 | 0.02 | 0.2 |