ceramic pipe

99.7 alumina ceramic tube refers to high-purity ceramic pipes with an Al₂O₃ content ≥ 99.7%, known for exceptional performance in extreme environments.   Core Properties • High-Temperature Resistance Continuous working temp: 1600°C – 1730°C; Peak: up to 1800°C • Mechanical Strength Hardness: 12.2 – 13.5 GPa (Mohs ~9) Flexural strength: 300 – 340 MPa Density: ~3.6 g/cm³ • Electrical Insulation Volume resistivity: >10¹⁵ Ω·cm Dielectric strength: >15 kV/mm • Chemical Stability Inert to most acids, and molten metals   • Thermal Stability Low thermal expansion: ~7.3×10⁻⁶ /°C   Typical Applications • High-temperature furnace tubes & thermocouple protection tubes • Insulators & components for electronics/semiconductors • Wear-resistant liners & pipes for chemical/metallurgy • Laboratory & medical equipment   Advantages Over Lower Grades (95% /99%) • Superior purity (minimizes contamination) • Higher max temperature • Better corrosion & wear resistance • Superior insulation at high temps   Common Specifications • OD: 1–200 mm • Length: 100–1000 mm (customizable) • Wall thickness: 0.5–20 mm • Bore: Single / multi-bore (2/4 holes) • Tolerance: ±0.01 mm (precision machining)