Silicon Nitride Brick: Premium High-Temp Refractory for Metallurgy & Semiconductors

TY Refractory’s top-tier Silicon Nitride Brick stands out as a high-strength refractory for ultra-high-temperature harsh working conditions. Each Silicon Nitride Brick adopts sintered magnesia and chrome ore as raw materials, with Si₃N4 content exceeding 90% to form a dense low-porosity matrix below 16%. This exclusive composition endows every Silicon Nitride Brick with remarkable anti-alkali slag capacity and moderate tolerance to acidic slag erosion.

The reliable Silicon Nitride Brick boasts outstanding core indicators: bulk density hits 2.70 g/cm³, cold crushing strength exceeds 150 MPa, thermal conductivity ranges from 16 to 20 W/m·K, and stable operation can reach up to 1800°C. Thanks to ultra-low thermal expansion, this Silicon Nitride Brick avoids cracking under frequent thermal cycles, with great thermal stability and long-lasting mechanical wear resistance.

Versatile Silicon Nitride Brick covers wide industrial scenarios. It serves as lining for blast furnaces, hot blast stoves, steel ladles and torpedo cars in steel plants. Meanwhile, customized Silicon Nitride Brick works for aviation bearings, metallurgical crucibles and semiconductor zone melting boats.

Backed by 20+ years of manufacturing experience, our factory holds triple ISO certifications and 21 proprietary patents. Strict full-process inspection guarantees uniform quality of every Silicon Nitride Brick, and custom sizes are available per drawings. Global industrial clients select our Silicon Nitride Brick to extend furnace lifespan and cut maintenance downtime. Contact our team to get full technical sheets and competitive bulk quotations for industrial-grade Silicon Nitride Brick.