| Basic materials characteristics(including Fe Doped) | ||
| Crystal symmetry | Trigonal, 3m | |
| Lattice constant, A | a = 5.154 c = 13.783 | |
| Density, g/cm3 | 7.45 | |
| Melting point , °C | 1650 | |
| Curie point , °C | 603 | |
| Mohs hardness | 6 | |
| Thermal expansion coefficient, 10-6/°C | aa = 16 ac = 4 | |
| Dielectric Constant (@ 100 KHz) | ea = 54 ec = 43 | |
| Refractive indices @ 633 nm | no = 2.175 ne = 2.180 | |
| Pyroelectric Coefficient: | -2.3 10-4 C/°C/m2 | |
| item | normal | standard black | super black | yellow | yellow black |
| colour | white | grey | dark grey | yellow | dark yellow |
| Flexural strength | same | slightly worse | much much better | much much better | |
| 3 points bending test(N) | 14--23 | 13--20 | 9--15 | >25 | >25 |
| static electricity prevention | much much better | much much better | slightly better | much much better | |
| bulk resistivity Ωcm (10-85℃) | E+14--15 | 1--5E+11 | 4--1E+10 | 4.50E+13 | 0.5--5E+11 |
| surface potential (kv) | 4.5 | <0.3 | <0.2 | 3.5 | <0.2 |
| dicing | better | better | much much better | much much better | |
| curie temperature: Tc ℃ | 603 | 603 | 603 | 603.5 | 603.5 |
| endurance against high temperature | better | much much better | much much better |
| Running Specs | ||||||||
| Item | 3" | 4" | 6" | |||||
| Cutting Type | Typical 36°Y/38.73°Y/42°Y/48°Y/X112°Y etc | |||||||
| Diameter(round or square) (mm) | 76.2 | 100 | 150 | |||||
| Tol(±mm) | 0.2 | 0.3 | 0.3 | |||||
| Thickness (mm) | ≥0.10 | ≥0.15 | ≥0.25 | |||||
| Primary flat (mm) | 22±2 | 32±2 | 57.5/42±2 | |||||
| LTV (5mmx5mm) (µm) | < 1 | < 1 | < 1 | |||||
| TTV (µm) | < 1.5 | < 1.5 | < 3 | |||||
| Bow (µm) | ±15 | ±20 | ±30 | |||||
| Warp (µm) | ≤ 20 | ≤ 25 | ≤ 30 | |||||
| PLTV (<0.5µm within 5*5mm) % | ≥95% | ≥95% | ≥95% | |||||
| Edge bevel | According with IEC62276& SEMI M1.2 Standard | |||||||
| Polished side Ra (nm) | ≤1.5 | |||||||
| Back Side Ra (µm) | general Ra:0.2-0.5 or polished | |||||||
| Customization acceptable | ||||||||
