1900℃ High-Alumina Fiber Board | Shijiazhuang Hongtao Technology

Shijiazhuang Hongtao Technology Co., Ltd., a professional high-tech enterprise based in Zhengding County, Shijiazhuang, Hebei, China, specializes in R&D and manufacturing of 1900℃ high-alumina fiber boards, core high-temperature insulation materials for industrial use.

Our 1900℃ high-alumina fiber board is made of high-purity alumina (Al₂O₃ ≥ 85%) and special inorganic binders, produced via wet vacuum forming and high-temperature sintering technology. It boasts excellent high-temperature resistance, with long-term working temperature up to 1700℃ and short-term maximum temperature of 1900℃, maintaining stable performance in extreme heat environments.

With bulk density of 600-700kg/m³, linear shrinkage ≤1% (1800℃ for 8h) and low thermal conductivity (0.18-0.25W/(m·K) at 600℃), it is lightweight, rigid and easy to cut and install. It has superior thermal shock resistance and chemical inertness, resisting acid, alkali and molten metal erosion, without contaminating processed materials.

Widely applied in metallurgy, aerospace, semiconductor and new energy industries, it is ideal for kiln linings, high-temperature equipment insulation, and thermal protection of precision components. We support standard and customized sizes, with Shijiazhuang Hongtao committed to providing high-quality, durable alumina fiber board solutions for global partners.