1500℃ Polycrystalline Mullite Alumina Fiber Board | Shijiazhuang Hongtao Technology

Shijiazhuang Hongtao Technology Co., Ltd., located in Zhengding County, Shijiazhuang, Hebei, China, is a professional high-tech enterprise specializing in R&D, manufacturing and customization of 1500℃ polycrystalline mullite alumina fiber boards.

Our 1500℃ polycrystalline mullite alumina fiber board is made of high-purity polycrystalline mullite (Al₂O₃·SiO₂) and high-quality alumina raw materials, produced via wet vacuum forming and high-temperature sintering technology. It strictly complies with industrial standards, with Al₂O₃ content ≥72% and SiO₂ content ≤28%, ensuring excellent high-temperature resistance.

It features long-term working temperature up to 1500℃, short-term maximum temperature of 1600℃, bulk density of 380-450kg/m³, and linear shrinkage ≤0.3% at 1400℃ for 24h. With low thermal conductivity (0.085-0.16W/(m·K) at 600℃), it achieves remarkable energy-saving effects.

The product has superior thermal shock resistance, chemical inertness, and resists acid, alkali and molten metal erosion, without contaminating materials. It is lightweight, rigid, easy to cut and install, widely applied in metallurgy, aerospace, semiconductor, new energy and other industries for kiln linings, high-temperature equipment insulation and precision component protection. We support standard and customized sizes to meet global partners’ diverse needs.