Premium Polycrystalline Alumina Fiber Material

Product Description:

Premium Polycrystalline Alumina Fiber Material is microcrystalline, allowing a long-term service temperature of up to 1600°C, which is far higher than that of aluminum silicate fiber. It features low density, low thermal conductivity, high operating temperature, good chemical stability, and excellent corrosion resistance. As an insulating and reinforcing material, it is widely used in fields such as metallurgy, building materials, ceramics, aerospace, military industry, and automotive environmental protection. Polycrystalline alumina fiber products are manufactured using vacuum suction filtration, with polycrystalline alumina fiber as the main raw material, combined with fillers and binders. They exhibit high temperature resistance, low heat capacity and density, low thermal conductivity, and good thermal shock resistance.

 

Product Features:

Excellent specific surface area parameters, suitable for adsorption and catalysis applications;

Superior resistance to acids and alkalis;

Excellent electrical insulation properties;

High design flexibility; products with varying properties can be obtained by adjusting chemical composition and heat treatment processes.

 

Product Applications:

Raw material for fiber products (e.g., fiber blankets, felts, paper, boards, shaped parts, etc.)

Catalyst carrier material

High-temperature filtration material

Reinforcement for composites such as metal matrix, ceramic matrix, and resin matrix composites

Mat material for three-way catalytic converters

Thermal insulation material for the automotive industry

Thermal insulation filling material for high-temperature kilns and furnaces

 

Product Technical Parameters:

Item	AL72- F	AL72- M	AL95- M	AL95- N
Chemical Composition Al₂O₃, SiO₂ (%)	72-75:25-28	72-75:25-28	>95:<5	>95:<5
Mineral Structure	δ-Al₂O₃,γ-Al₂O₃	Mullite	γ-Al₂O₃	α-Al₂O₃
Classification Temperature (°C)	1600	1600	1600	1800
Melting Point (°C)	>1800	>1800	>2000	>2000
Density (g/cm³)	3.1	3.1	2.8	3.4
Average Fiber Diameter (μm)	5.5-7.5	5.5-7.5	3-5	3-5
Shot Content (%) (≥45μm)	0-2	0-2	0-2	0-2
Impurity Content (%)	<0.5	<0.5	<0.5	<0.5
Monofilament Tensile Strength (MPa)	≥1200	≥1000	-	-
Monofilament Tensile Modulus (GPa)	≥100	≥100	-	-

 

Product Certificates：

SUNTHERM has passed a variety of industry certification tests, such as CE, SGS, ASTM, ISO9001-2000, SASO, ROHS, BV, MSDS and so on.

Customer visits:

Packaging Display:
SUNTHERM boasts a professional team with vast experience in tailoring packaging solutions for diverse products across various industries.

Related Products:

 

FAQ:

Q1: What is the maximum long-term service temperature of polycrystalline alumina fiber products?

A1: Polycrystalline alumina fiber products can be used continuously at temperatures up to 1600°C, which is significantly higher than conventional aluminum silicate fibers. This makes them suitable for extremely high-temperature environments such as metallurgical furnaces, aerospace components, and ceramic kilns.

Q2: What advantages do polycrystalline alumina fiber products offer over traditional refractory materials?

A2: Compared to traditional refractory materials, polycrystalline alumina fiber products feature low density, low thermal conductivity, excellent chemical stability, and outstanding corrosion resistance. Additionally, they have low heat capacity and good thermal shock resistance, allowing faster heating and cooling cycles without cracking. These properties make them ideal for both thermal insulation and reinforcement applications in demanding industries like automotive, military, and building materials.

Q3: Do you support product customization?

A3: Yes, we provide OEM/ODM services and can customize products based on your drawings, samples, or specifications.

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