Our precision-ground alumina (Al₂O₃) ceramic tubes are engineered for extreme temperature stability, wear resistance, and electrical insulation in demanding industrial applications. Custom dimensions and tolerances available for OEM integration.

Key Technical Specifications

✅ Material: 99.5% Alumina (Al₂O₃) - <50ppm metallic impurities

✅ Density: 3.9 g/cm³ - Gas-tight structure

✅ Flexural Strength: 350-400 MPa

✅ Hardness: 1,500 HV (Mohs 9) - 3× harder than tool steel

✅ Max Operating Temp: 1,600°C (2,912°F) continuous

✅ Thermal Shock Resistance: ΔT >500°C (Water quenching test)

✅ Surface Finish:

Ground: Ra 0.4µm (±0.02µm consistency)

Polished: Ra <0.1µm (optional)

✅ Standard Dimensions:

OD: 2-100mm (±0.02mm tolerance)

ID: 1-90mm

Length: 10-500mm (custom up to 1,200mm)

Industry Applications

1. Semiconductor Manufacturing

Plasma etch chamber components - Non-contaminating, RF-transparent

Wafer handling sleeves - ESD protection for 300mm wafers

2. High-Temperature Furnaces

Thermocouple protection tubes - Withstand 1,500°C molten metal

Kiln furniture support rods - Zero deformation at 1,400°C

3. Chemical Processing

Acid-resistant liners - For 20% HCl transfer systems

Reactor thermowells - 10× lifespan vs. Hastelloy

4. Energy Systems

SOFC stack components - Ionic insulation layers

Solar cell manufacturing - High-purity alumina containment

5. Medical Technology

Sterilizable surgical guides - ISO 6474 compliant

MRI-compatible components - Non-magnetic properties