Square Alumina Ceramic Rods

Square Alumina Ceramic Rods represent a pinnacle of advanced ceramic engineering, designed to deliver exceptional performance across a spectrum of industrial and technical applications. Crafted from high-purity alumina (Al₂O₃) powders—typically available in grades of 90%, 95%, 97%, or 99% purity—these rods undergo a rigorous manufacturing process that includes precise mixing, shaping via isostatic pressing or extrusion, and sintering at ultra-high temperatures (up to 1700°C). This meticulous production ensures a dense, homogeneous microstructure, free from internal defects, which directly contributes to their superior mechanical and thermal properties.

At the core of their functionality is an impressive blend of physical characteristics. Boasting a Mohs hardness of 9 (second only to diamond), these square rods exhibit outstanding wear resistance, making them ideal for use in abrasive environments such as grinding machinery, material handling systems, or as guide rails in precision equipment. Their high compressive strength (exceeding 2000 MPa for 99% alumina) and moderate flexural strength (up to 350 MPa) allow them to withstand heavy mechanical loads without deformation, while their low fracture toughness is mitigated by careful design to avoid impact-heavy applications.

Electrically, these rods serve as superior insulators, with volume resistivity exceeding 10¹⁴ Ω·cm at room temperature—even at elevated temperatures, their insulating properties remain reliable, making them suitable for use in high-voltage electrical equipment, circuit breakers, or as substrates in electronic components. Chemically, they are highly resistant to corrosion by most acids, alkalis, and organic solvents (excluding strong hydrofluoric acid and concentrated phosphoric acid), ensuring longevity in chemical processing, pharmaceutical manufacturing, or waste treatment systems.