3X Ceramic Parts Company Limited Machinable Glass Ceramic Disc

Machinable Glass Ceramic Characteristics: The most outstanding characteristic of Machinable Glass Ceramic Disc is that it can be processed by turning, milling, planing, grinding, drilling, sawing and tapping with standard metal processing tools and equipment. It can be processed into products with complex shapes and high precision requirements. Although glass ceramics are brittle and hard materials, as long as the processing route and clamping mode are reasonably determined, the machining method is paid attention to, and the cutting parameters are accurately selected, the finish reaches 0.5 μ m and the machining accuracy is controlled at 0.005 mm. Machinable Glass Ceramic Disc Properties: Subjects Value Remark Density 2.48g /cm3 Archimedes Apprant porosity 0.069% Water absorbtion 0 Hardness 4~5 Moh Color White Thermal Expansion Coefficient 72×10-7/°C -50°C to 200°C average Heat Conductivity Rate 1.71W/m.k 25°C Use Temperature 800°C Flexural Strength >108MPa Compression Strength >508 MPa Thock Fracturness >2.56KJ/ m2 Elastic Modulus 65GPa Dielectric loss 1~ 4×10-3 Room temperature Dielectric Constant 6~7 " Thock Strength >40KV/mm Sample thickness 1mm Volume Resistance 1.08×1016Ω.cm 25°C 1.5×1012Ω.cm 200°C 1.1×109Ω.cm 500°C Room Temperature Outgas rate 8.8×10-9 ml/s. cm2 Vaccum burn in 8 hours helium penetrate rate 1×10-10ml/s After 500°C sintering , cold to room temperature 5%HC1 0.26mg/ cm2 95°C, 24 hours 5%HF 83mg/ cm2 " 50%Na2CO3 0.012 mg/ cm2 " 5%NaOH 0.85mg/ cm2 "