AZ
SANKEI Zirconia Alumina

Zirconia Alumina
Grit Size Particle Size #400〜#4000
SANKEI Zirconia Alumina (AZ) is a micro grit abrasive developed as a lapping material for which a high degree of precision is required. It has sharp grit size distribution, stable grit size, and a blocky shape.
A smooth polished surface can be obtained by soft polishing.
DATA
– Specifications for Particle Size (Electrical Sensing Zone Methods) –
| Grit Size | Grit Size Distribution(μm) | |||
| maximum particle size in μm | particle size at 3% cumulative height | particle size at 50% cumulative height | particle size at 94% cumulative height |
|
| # 400 | 63 or less | 50 or less | 23.0±2.1 | 14 or more |
| # 500 | 53 or less | 43 or less | 19.0±1.6 | 12 or more |
| # 600 | 45 or less | 37 or less | 16.0±1.3 | 10 or more |
| # 700 | 38 or less | 31 or less | 13.5±1.1 | 8 or more |
| # 800 | 32 or less | 27 or less | 11.3±0.9 | 6.5 or more |
| # 1000 | 27 or less | 23 or less | 9.4±0.8 | 5 or more |
| # 1200 | 23 or less | 20 or less | 7.1±0.7 | 4 or more |
| # 1500 | 19 or less | 17 or less | 5.5±0.5 | 3 or more |
| # 2000 | 15 or less | 14 or less | 4.5±0.4 | 2 or more |
| # 3000 | 12 or less | 11 or less | 3.6±0.4 | 1.5 or more |
| # 4000 | 10 or less | 8 or less | 2.7±0.4 | 1.3 or more |
– Property & Chemical Composition –
| Raw Materials | A mixture of fused alumina and zircon sand |
| Chemical Name | AI2O3+ZrO2 |
| Shape | Brown, blocky grit shape |

– Quality Standards –
| Grit Size | specific gravity | chemical composition (%) | ||||
| AI203 | ZrO2 | SiO2 | Fe2O3 | TiO2 | ||
| #400~#500 | 3.90 or more | 25.0 or more | 55.0 or less | 25.0 or less | 0.5 or less | 2.0 or less |
| #600~#1000 | 3.85 or more | 45.0 or more | 33.0 or less | 20.0 or less | 0.5 or less | 2.0 or less |
| #1200~#4000 | 3.85 or more | 45.0 or more | 40.0 or less | 20.0 or less | 0.5 or less | 2.0 or less |
Use- Use -
- Semiconductor crystals (silicon, etc.)
- Precision lapping material for compound semiconductors, etc.
- Precision lapping materials for lenses, prisms, crystals, optical glass, etc.
- Lapping material for metals, etc.
- Lapping material for photomasks
- Other
Manufacturing Process- Manufacturing process -

Raw Material 
Grinding 
Classification 
Products 
Inspection 
Shipment











