High-Alumina Ceramic Fiber Board

Name: High-Alumina Ceramic Fiber Board
Brand: ZOUYU

Product Overview

ZOUYU High-Alumina ceramic fiber boards are premium-grade rigid insulation products manufactured using an advanced vacuum-forming process. With an Al2O3 content of 52-55% and Fe2O3 content below 0.2%, these boards deliver superior thermal stability and mechanical strength for the most demanding high-temperature furnace environments.

The high alumina composition provides enhanced resistance to thermal shock, gas erosion, and chemical attack, making these boards ideal for applications requiring sustained performance at temperatures up to 1200°C.

Key Features

High alumina content (52-55%) for exceptional thermal performance
High compressive strength (0.08-0.12 MPa) for load-bearing applications
Excellent dimensional stability at temperatures up to 1200°C
Low thermal conductivity for superior energy efficiency
Uniform density distribution (320-350 kg/m³) throughout the board
Easy to machine, cut, and shape for custom installations
Outstanding resistance to thermal shock and chemical attack

Applications

Steel Mill Furnaces Glass Melting Furnaces Ceramic Kilns Combustion Chambers Furnace Doors Heat Treatment Petrochemical Heaters

Technical Specifications

Property	HA (High-Alumina)
Classification Temperature	1360°C
Working Temperature	≤1200°C
Bulk Density (kg/m³)	320-350
Al₂O₃ (%)	52-55
Al₂O₃ + SiO₂ (%)	99
Fe₂O₃ (%)	<0.2
Compressive Strength (MPa)	0.08-0.12
Standard Sizes	600 × 400 × 10-50 mm \| 900 × 600 × 20-50 mm

FAQ

Frequently Asked Questions

Technical and commercial answers for this product. If your question is not here, our engineers will answer it directly.

What makes high-alumina board different?

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HA board carries 52-55% Al₂O₃ with Al₂O₃ + SiO₂ at 99% and Fe₂O₃ below 0.2%. It is classified at 1360°C and rated for continuous service to 1200°C, against 1260°C and 1050°C for standard board.

When should I specify HA board?

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Specify HA for hot faces running continuously above 1050°C, for furnaces with frequent cycling, and where the board carries mechanical load or is exposed to high gas velocity at temperature.

What are the mechanical properties?

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Bulk density is 320-350 kg/m³ with compressive strength of 0.08-0.12 MPa, which allows the board to be used as a self-supporting lining panel rather than needing a separate support structure.