Alumina Ceramic Valve Plate (also known as alumina ceramic valve disc) is a high-performance fluid control component manufactured from high-purity aluminum oxide (Al₂O₃) ceramic material. It serves as a critical sealing and flow-regulating part in various industrial valves, replacing traditional metal, plastic, or rubber valve plates.
Material & Specifications
• Raw Material: High-purity alumina ceramic (typically 95%–99.9% Al₂O₃)
• Density: 3.75–3.95 g/cm³
• Hardness: Rockwell hardness HRC 90 (second only to diamond)
• Flexural Strength: 300–630 MPa
• Compressive Strength: 2000–4000 MPa
• Surface Roughness: Ra ≤ 0.1–0.8 μm (mirror-polished)
• Temperature Resistance: Operating range -200°C to +1600°C; melting point ~2050°C
• Standard Sizes: Customizable outer diameter (up to 300 mm) and thickness
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