
Sgj Customized Alumina Ceramic Filament Holder Block Parts for Vacuum Space. High Purity Alumina: Available in 85% to 99.7% purity, with precision grades exceeding 99.7% for superior performance. Custom Machining: Complex geometries achievable via green, biscuit, or sintered diamond grinding methods. Excellent Insulation: Low dielectric constant, high volume resistivity, and high insulation strength for electrical applications. Thermal Stability: Resists thermal shock and operates effectively within a wide temperature range. Metallizable Options: SGJ 96% alumina can be metallized for high-temperature brazing to metals or other ceramics. High Mechanical Strength: Features high compressive strength, hardness (Moh's 9), and wear resistance. Chemical Resistance: Resistant to strong acid and alkali attacks at high temperatures. Cost-Effective Material: Most widely used engineering ceramic with reasonable raw material costs and good value.