RA0.2 99% Alumina Ceramic Plate

Precision-Grade Alumina Ceramic Plate with Ra 0.2μm Surface Finish
This high-purity alumina ceramic plate (Al₂O₃ ≥99%) features exceptional surface smoothness achieving Ra 0.2μm surface roughness, meeting stringent industrial requirements for precision components.
Key Characteristics:

• Ultra-Smooth Surface: Mirror-like finish minimizes friction and particle adhesion, ideal for semiconductor handling and medical devices
• Mechanical Properties: Vickers hardness 15-18GPa, flexural strength 300-400MPa
• Thermal Stability: Operating range -200°C to 1600°C with CTE 7.2×10⁻⁶/°C
• Electrical Insulation: Volume resistivity >10¹⁴ Ω·cm at 25°C

Typical Applications:
• Vacuum chamber liners • Laser reflector substrates • High-wear bearing surfaces • MEMS fabrication stages