Silica Material Portfolio
Compare crystalline silica powder, fused silica powder and sand, cristobalite, ultrafine silica and surface-treated silica for industrial applications.
PRODUCT FAMILIES
Start with the material family that matches your process, then compare grades, particle sizes, properties and applications.
Crystalline silica powders for coatings, silicone rubber and electronic packaging.
Low-expansion fused silica powders, sand and granules for casting, refractory and ceramics.
High-whiteness cristobalite flour, powder and sand for casting, coatings and engineered compounds.
Clean quartz raw material and refined particles for purity-sensitive industrial applications.
Refined translucent and porcelain-white quartz sand grades for casting, ceramics and refractory uses.
Precision quartz rods, plates and engineered quartz components for technical applications.
Ultrafine crystalline silica powder in 1000–3000 mesh options for welding-electrode coating and welding-flux formulations. Controlled grinding, classification and low-moisture packing support fine blending and consistent raw-material handling. Final grade must be matched to the manufacturer’s complete coating or flux formulation.
Fine silica powder filler developed for epoxy and other electronic potting compounds. Controlled particle-size options, low moisture and consistent batch processing support stable mixing, reliable filling and dimensional control in encapsulation formulations. Final grade and acceptance limits should be matched to the customer’s resin system.
General-purpose 325 mesh crystalline silica powder for ceramics, refractories and mineral-filled industrial compounds. Controlled screening supports consistent dry blending and formulation. SiO₂ is maintained at 99.3–99.7%; confirm the required particle-size distribution and test method with your order.
Custom quartz plates, boats and trays for laboratory thermal processing, optical assemblies and semiconductor-related equipment. Specify dimensions, slot or cavity geometry, surface finish, tolerances and service conditions for material and manufacturing review.
Clear quartz tubes and solid rods for thermal processing, optical systems and precision equipment. Available in custom dimensions with polished or application-specific finishing, dimensional inspection and protective export packing. Send your drawing or required size for grade and tolerance confirmation.
Refined 40–140 mesh high-purity quartz sand for optical quartz components and electronic quartz materials. Available in ultra-low-alkali and controlled-aluminium grades, with SiO₂ from 99.9% to 99.999% and Fe₂O₃ up to 0.001%. Batch inspection and sealed paper-drum packing support stable industrial processing.
High-purity quartz sand processed from selected natural crystal or premium quartz for quartz glass and crucible manufacturing. SiO₂ 99.9–99.999%, Fe₂O₃ ≤0.001%, ultra-low alkali potential and application-specific grading available by confirmed specification.
High-purity fused quartz sand for electrical insulation compounds and refractory formulations. Amorphous silica with low thermal expansion, controlled granular grades and multiple particle-size options for application-specific evaluation.
Natural crystalline quartz sand processed from selected quartz stone for glass, ceramic and foundry formulations. Mohs hardness 7, milky-white to translucent appearance and particle-size grading available to agreed requirements. Contact Changtong for grade-specific chemistry, sizing, samples and quotation.
Cristobalite powder for dental investment materials, produced from selected white quartz by calcination, grinding, filtration, drying and sieving. Review M3000–M6000 grades, whiteness 90–98 and the approved particle-size data for dental casting trials.
Cristobalite flour for jewelry investment casting, with white appearance, controlled M3000–M6000 options and particle-size data for wax-tree and flask evaluation. Confirm grade, packing and process requirements before ordering.
High-whiteness cristobalite powder processed from selected white natural quartz through high-temperature calcination, fine grinding, filtration, drying and sieving for epoxy compounds, casting, engineering plastics, silicone rubber, precision ceramics and paint formulations.
Technical Resources
Use practical guides to compare silica materials, convert mesh to microns and prepare clearer specifications for your application and RFQ.
Evaluate cristobalite-filled silicone seals with controlled compression, cure history and recovery measurements. Hardness alone cannot qualify seal behavior.
Check silica-filled epoxy cure by separating filler dilution from reaction changes, then connect DSC evidence to the temperature history of the cast part.
Casting-ring size, liner contact and orientation can change effective mold expansion. Use a controlled, axis-by-axis trial before adjusting a jewelry pattern.
