Excellent high and low temperature resistance
α- The service temperature of Al2O3 Fibre is up to 1400℃-1800℃; After treatment with liquid nitrogen (- 196℃) for 24 hours, the strength did not decrease.
Acid and alkali resistance
Retention rate of fibre strength after soaking in 10% alkali solution for 24h: NaOH -- 40%; KOH--65%； NH4OH--95%； The fibre strength retention rate after soaking in 10% acid solution for 24h: HCl-96%; H2SO4--95%; HNO3--96%; H3PO4--95%。
Slag free ball
Our fibre are shot free (≥ 45 μ m), the fibre strength has been improved to a certain extent. At the same time, because the thermal insulation and fire resistance of the fiber are inversely proportional to the shot content, the lower the shot content, the higher the thermal insulation and fire resistance.
Excellent electrical insulation
The resistance of alumina fibre decreases with the increase of temperature. Above 600℃, the resistance tends to be constant. The dielectric constant and dielectric loss of alumina fibre are basically stable at high temperature and are suitable for high temperature wave transmission materials.
Excellent flexibility
Good flexibility: the fibre has high flexibility and is not easy to break in the process of acupuncture. It is a very suitable product for acupuncture.
Strong design
By adjusting chemical composition and heat treatment process, products with different properties can be obtained to meet different application needs.

Product Type		72-M
Chemical Composition AI2O3：SiO2（%）		72-75:25-28
Mineral Structure		Mullite
Classification Temperature （℃）		1600
Molten Point（℃）		＞1800
Density（g/cm3）		3.1
Average Fibre Diameter（μm）		5.5-7.5
Shot Content（%）	≥45μm	0-2
Impurity（%）		＜0.5
Tensile Strength（MPa）		1000
Modulus of Elasticity（GPa）		≥100
Slip casting during 1h（%）		1600℃下≤1

    

72-M type polycrystalline alumina fibre has excellent high temperature stability and chemical stability, and is used in the production and manufacture of high-temperature products such as high-temperature fibreboard, high-temperature fibre profiled parts, fibre blanket, fibre felt, fibre paper, etc., and is widely used in high-temperature insulation in the fields of steel, petrochemical, ceramics, sealing and heat insulation.