Overview
Steel Wire Reinforced Graphite Asbestos Board is a composite material designed for demanding industrial environments. It combines the thermal and chemical resistance of graphite and asbestos with the mechanical reinforcement provided by steel wire mesh. This material is particularly valued in applications requiring durability under high temperatures and pressures. Originally developed for heavy industries, this board has evolved to meet modern safety and performance standards. While asbestos-containing materials face restrictions in some regions, alternatives are available for compliance with local regulations. The steel wire reinforcement significantly enhances tensile strength, making it suitable for dynamic sealing applications.
Physical and Chemical Properties
The board exhibits exceptional thermal stability, withstanding temperatures up to 500°C (932°F) in continuous service. Its layered structure, with embedded steel wire, provides resistance to compression and shear forces. The graphite component ensures low thermal expansion and excellent heat dissipation. Chemically, it is inert to most acids, alkalis, and organic solvents, making it suitable for corrosive environments. The material's density and porosity can be adjusted during manufacturing to meet specific application requirements. However, its electrical conductivity is higher than pure asbestos products due to the graphite content.
Main Applications
Primary use is in high-temperature gaskets for pipelines, boilers, and heat exchangers in power plants and refineries. The steel wire reinforcement prevents blow-out under pressure fluctuations. It's also employed in brake linings and clutch facings for heavy machinery due to its friction properties. In the chemical industry, it serves as insulation for reactors and distillation columns. Some specialized applications include furnace door seals and expansion joints in high-temperature processing equipment. The material's versatility makes it a staple in industries dealing with extreme operating conditions.
Safety and Storage
Proper handling is crucial due to potential asbestos fiber release during cutting or machining. Work should be performed in controlled environments with local exhaust ventilation. Workers must wear NIOSH-approved respirators and protective clothing to minimize exposure risks. Storage requires protection from mechanical damage and environmental factors. Boards should be stacked flat with interleaving sheets to prevent wire mesh deformation. Inventory should follow the FIFO (first-in, first-out) principle to prevent material degradation over time. Facilities should maintain clear labeling indicating asbestos content for safety compliance.
B2B Procurement Guide
When sourcing, specify thickness (commonly 1-6 mm), wire mesh density (typically 10-20 wires per inch), and graphite-to-asbestos ratio. Request certified test reports for thermal conductivity, compression strength, and chemical resistance relevant to your application. Lead times may vary based on customization requirements; standard products usually have 2-4 week delivery. Consider MOQs (minimum order quantities) which typically range from 50-100 square meters for specialty grades. For international shipments, verify import regulations concerning asbestos materials in the destination country.
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