Product guide
Polycrystalline Alumina Fiber Cotton Supplier
Sinosteel Luonai’s official product page describes polycrystalline alumina fiber cotton made by a sol-gel process, with low bulk density and thermal conductivity, thermal-shock stability and chemical corrosion resistance. Published grades are A-95, A-80 and A-72; final service suitability must still be confirmed for the furnace atmosphere and construction.
Published catalog reference. Final grade, dimensions, properties and availability are confirmed against the RFQ. Official source.
Typical applications
Where these materials are used
- Fiber felt, board and special-shaped insulation for furnaces above 1,400°C
- Expansion joints and short-term thermal-insulation repair
- Composite-material reinforcement
- Aerospace thermal-insulation applications
Selection factors
What to confirm
- Published grades A-95, A-80 and A-72
- Official maximum service temperatures: 1,700°C, 1,700°C and 1,600°C respectively
- Atmosphere, shrinkage and continuous-use requirement
- Required form, quantity, packing and documentation
Final material selection requires a review of operating conditions and project specifications.
Faster technical review
Include these details in your RFQ
A complete first message helps us compare the requested grade, manufacturing route, inspection scope and export schedule.
Procurement FAQ
Questions buyers often ask
Are the published maximum temperatures continuous-use ratings?+
Not necessarily. Maximum service temperature is not a substitute for project-specific continuous-use guidance. Share the atmosphere, exposure and target life for confirmation.
Which grades are listed by the official source?+
The official product table lists A-95, A-80 and A-72.
Can the cotton be converted into other shapes?+
The official application information includes insulation felt, board and special-shaped products. Specify the required form, dimensions and operating conditions.
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Where it may be evaluated
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RFQ checklist