72-F Type Alumina PCW Fiber

The alumina fibre, known as 72-F type, exhibits remarkable flexibility. It finds applications in multiple sectors including the automotive industry, where it is used in manufacturing catalytic converter mats. Additionally, it is utilized for reinforcing metal-based, ceramic-based, and resin-based composite materials. Moreover, this fibre proves valuable in industrial high-temperature environments such as blankets, felt, and other related fields.

Product Introduction

The 72-F type alumina fibre primarily consists of 72% Al2O3 and 28% SiO2. It is manufactured using the highly regarded “sol-gel” method, known internationally for its excellence. This fibre possesses excellent flexibility and braidability, making it highly versatile.

72-F type alumina PCW fibre

Product Performance

Excellent High and Low Temperature Resistance

Al2O3 Fibre can withstand service temperatures ranging from 1400℃ to 1800℃. Remarkably, even after being exposed to liquid nitrogen (-196℃) for 24 hours, the fibre’s strength remained unaffected.

Acid and Alkali Resistance

The fibre strength retention rates after immersing in a 10% alkali solution for 24 hours are as follows: NaOH—40%, KOH—65%, and NH4OH—95%. Similarly, the fibre strength retention rates after soaking in a 10% acid solution for 24 hours are as follows: HCl—96%, H2SO4—95%, HNO3—96%, and H3PO4—95%.

Slag Free Ball

Our fibre is free from shot particles(≥45 μm). This absence of shot particles has contributed to an improvement in fibre strength. Additionally, the thermal insulation and fire resistance of the fibre are inversely proportional to the shot content. In other words, the lower the shot content, the higher the thermal insulation and fire resistance properties of the fibre.

Excellent Electrical Insulation

The electrical resistance of alumina fibre shows a decline as the temperature rises. Once the temperature surpasses 600℃, the resistance tends to remain relatively stable. Moreover, the dielectric constant and dielectric loss of alumina fibre exhibit consistent values at high temperatures, making it a suitable material for high-temperature wave transmission applications.

Excellent Flexibility

Excellent flexibility: The fibre demonstrates remarkable flexibility, making it highly resistant to breakage during the acupuncture process. It is an exceptionally well-suited product for acupuncture procedures.

Strong Design

Through the adjustment of chemical composition and heat treatment processes, it is possible to obtain products with diverse properties that can cater to various application requirements.

alumina PCW fibre

Technical Parameter

Product Type

Type 72-F

Chemical Composition Al2O3:SiO2 (%)


Mineral Structure

δ or δ+ Mullite

Classification Temperature (℃)


Molten Point (℃)


Density (g/cm3)


Average Fibre Diameter (μm)


Length (cm)


Shot Content (%)



Impurity (%)


Tensile Strength (MPa)


Modulus of Elasticity (GPa)


Slip casting during 1h (%)


Typical Applications

The 72-F type alumina fibre exhibits outstanding flexibility and finds extensive applications. It is utilized in the production of catalytic converter mats for the automotive industry. Additionally, it serves as a reinforcement material in metal-based, ceramic-based, and resin-based composite materials. Furthermore, it proves valuable in various industrial high-temperature settings, including the production of blankets and felt.

Order Process of 72-F type Alumina PCW Fiber

order process of aluminum product


A1: We are a manufacturer.

A2: Yes, we can customize aluminum magnesium alloy wire to your requirements.

A3: Yes, we could provide the free samples within 0.5kg. You only need to undertake the express charges.

A4: We have professional engineers and a strict QA & QC system.

A5: We are looking for distributors and agents all over the world.

A6: Normally are cartons, but also we can pack them according to your requirements.

A7: It depends on the quantity you need, 1-25 days usually.

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