Polished Si3N4 Balls

0.4mm-3.0mm High Hardness Polished Silicon Nitride Si3N4 Grinding Media Balls

Polished Silicon Nitride Grinding Media Balls
Silicon nitride grinding media balls have desirable characteristics such as high strength, good wear/corrosion resistance, high temperature resistance, electrical insulation and are non-magnetic. Compared with other grinding media, it has a lighter weight (60% less than steel), lower thermal expansion, and reduced total operational cost. Its high hardness can meet the demands of a vast majority of metal powder crushing and refining. It is an ideal grinding media when high hardness, low contamination and less abrasion are required. Our silicon nitride media is available in sizes ranging from 0.4mm - 3.0mm, with other sizes available upon request.

Key Properties & Advantages
■ Hardness: Measures at 75–80 HRC, providing the ability to crush and refine incredibly hard metal powders and advanced ceramics.
■ Low Contamination: Significantly lower wear and reduction rates compared to zirconia or alumina balls, ensuring high purity.
■ Density: 3.2 g/cm³, which makes them roughly 40-50% lighter than standard bearing steel, reducing the load on machinery.
■ Thermal & Chemical Stability: Highly resistant to corrosion and capable of handling maximum operating temperatures up to 1000℃.
■ Electrical/Magnetic: Non-magnetic and electrically insulating, ideal for sensitive electronic and semiconductor applications.

Common Applications

Semiconductors: Glass frit pulverization and specialized powder processing.

Advanced Materials: Fine grinding and dispersion of high-strength non-oxide ceramics and electronic coatings.

High-Purity Chemicals: Applications where contamination from metallic wear debris must be strictly avoided.

Norceramic New Materials supplies high-performance ceramic materials and precision components for research, prototyping, and industrial production. Our products includes pyrolytic and hot-pressed boron nitride, silicon carbide, alumina, zirconia, and other specialized ceramics, with standard products and custom solutions available for demanding applications.

With a deep understanding of material behavior in ceramic parts, Norceramic specializes in high-performance ceramics including Alumina, Zirconia, and ZTA, and more to deliver components that meet the most stringent mechanical and thermal requirements.

At Norceramic, we specialize in providing high-precision custom ceramic parts for the medical, electronics, optics, and semiconductor sectors. Through DFM optimization and full-process quality control, we ensure micron-level dimensional consistency for complex geometries during mass production.

From R&D prototypes to full-scale production, Norceramic New Materials delivers high-purity alumina, boron nitride, silicon carbide, and aluminum nitride ceramics tailored to your exact specifications. We work closely with trusted, ISO-certified manufacturers to ensure every batch meets rigorous quality standards—so you can focus on your application. Whether you need custom shapes, small quantities for research, or high-volume production for industrial use, Norceramic provides the technical expertise and supply chain reliability you expect.

Our mission is to support innovation by providing high-quality ceramic materials and solutions. We are committed to helping our customers drive innovation and achieve operational excellence. With a focus on both cutting-edge technology and traditional craftsmanship, Norceramic ensures that every ceramic product we deliver offers optimal performance, quality, and consistency.