Custom Alumina Ceramic Parts for Semiconductor & Industrial Equipment
St.Cera manufactures custom ceramic parts from 99.8% high-purity alumina (Al₂O₃) according to customer drawings. Our facility is equipped with precision grinding machines and CNC machining centers, enabling the production of complex ceramic components with high precision. Typical parts include insulators, bearing balls, seal rings, bushings, custom fixtures, and complex geometries.
Our manufacturing capabilities support：
- ·Maximum length/width: 1500mm
- · Maximum outer diameter: 600mm
- · Maximum thickness: 100mm
- · Minimum inner diameter: 0.2mm
Precision achieved:
- · Straightness: 0.005mm
- · Perpendicularity: 0.005mm
- · Roundness: 0.002mm
- · Parallelism: 0.002mm
- · Concentricity: 0.01mm
- · Flatness: 0.003mm
- · Surface finish: Ra0.1 (minimum)
The material offers high hardness (16 GPa), flexural strength (361 MPa), dielectric strength (15×10⁶ V/m), and thermal stability up to 1600°C. Available as-sintered, ground, lapped, or polished. Each part is 100% CMM inspected and supplied with a dimensional report.
Specifications (based on 99.8% Al₂O₃ & St.Cera manufacturing capabilities):
| Property | Value |
| Material | 99.8% Alumina (Ivory) |
| Density | 3.93 g/cm³ |
| Flexural Strength | 361 MPa |
| Vickers Hardness | 16 GPa |
| Max Length/Width | 1500mm |
| Max Outer Diameter | 600mm |
| Max Thickness | 100mm |
| Min Inner Diameter | 0.2mm |
| Flatness | 0.003mm |
| Parallelism | 0.002mm |
| Straightness | 0.005mm |
| Surface Finish | Ra0.1 (min) |
| Max Operating Temp | 1600°C |
Applications:
- · Electrical insulators and high-voltage components
- · Wear-resistant bushings, seal rings, and bearings
- · Semiconductor process fixtures
- · High-temperature furnace hardware
Quality Assurance:
All parts inspected with CMM. Straightness, perpendicularity, roundness, parallelism, concentricity, and flatness verified per batch.
