1600°C Resistant Alumina Polycrystalline Fiber Board

Product Description

1600°C Resistant Alumina Polycrystalline Fiber Board is a high-temperature insulation board primarily composed of polycrystalline alumina fiber, complemented by inorganic binders and special additives. It is manufactured through processes such as wet vacuum filtration, extrusion, drying, and finishing. Utilizing an advanced sol-gel process, soluble aluminum salts are first converted into a colloidal solution, which is then high-speed centrifuged to form fiber preforms. These preforms undergo dehydration, drying, and medium-to-high temperature heat treatment to achieve crystallization. The main crystalline phase is α-Al₂O₃ (corundum), with a minor amount of mullite, achieving a chemical purity of 95% to 99% or higher. The product is pure white and combines the high-temperature stability of crystalline ceramics with the superior thermal insulation of fibrous materials, allowing stable, long-term operation in extreme high-temperature environments up to 1600°C.

 

Product Features

Ultra-High Temperature Stability: The polycrystalline microcrystalline structure ensures phase stability at elevated temperatures, allowing continuous long-term use at 1500–1600°C with excellent high-temperature creep resistance.

Superior Thermal Insulation & Energy Savings: Low heat capacity and low thermal conductivity result in minimal heat storage, significantly reducing heat loss. Compared to traditional refractory bricks, energy savings of 15–45% can be achieved, substantially lowering kiln operating costs.

Excellent Thermal Shock Resistance: The board withstands rapid heating and cooling cycles without cracking or spalling, making it especially suitable for intermittent kilns.

Strong Resistance to Airflow Erosion: Capable of direct contact with flames and high-velocity airflow, the product exhibits outstanding erosion resistance, maintaining structural integrity even under harsh conditions with airflow velocities up to 90 m/s.

Good Chemical Stability: Excellent resistance to both acid and alkali corrosion allows use in a variety of atmospheres, including acidic, oxidizing, reducing, and vacuum conditions.

Easy to Process: As a non-brittle material with good flexibility, the board is easy to cut, drill, and mill. It can be fabricated into various irregular shapes and precision-sized parts, and is convenient for installation and on-site construction.

Green & Environmentally Friendly: The product contains no asbestos or other hazardous substances, and releases no toxic gases during high-temperature use, fully complying with modern green manufacturing standards.

 

Product Technical Parameters:

Item	Index
Classification Temperature (℃)	1600 (3000F)
Use limit (℃)	1450
Density(kg/m3)	260-600
Thermal Conductivity (w/m.k)	400 600 1000 1200	0.08 0.10 0.16 0.19
Linear shrinkage (%)	<2 (1450Cx24h)
Chemical Composition (%)	AL2O3 (%) SiO2 (%)	62 36
Modules of rupture (Mpa )	>0.3
Compressive strength(Mpa)	>0.25
Ignition loss(%)	8

 

Product Certificate：

Why Choose Us

Extensive Experience

With 33 years of manufacturing expertise and 20 years of export experience in the ceramic fiber insulation industry, SUNTHERM is a trusted and professional manufacturer of thermal insulation materials.

Superior Quality

SUNTHERM products are produced under a strict manufacturing process and rigorous quality control system, ensuring consistent and reliable performance.

Tailored Solutions

SUNTHERM provides personalized and customized services based on your specific needs, offering optimal solutions for various application scenarios.

OEM Support

SUNTHERM offers comprehensive OEM services, helping you build your brand with confidence.

Fast & Reliable Delivery

Thanks to SUNTHERM large-scale and stable production capabilities, we ensure fast turnaround and on-time delivery for every order.

Competitive Pricing

Through years of dedication to international trade and supply chain optimization, we're able to offer the most competitive prices without compromising on quality.

Customer visits

Packaging Display
SUNTHERM has a professional team with rich experience in customizing packaging for various products.

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FAQ

Q1: What is your minimum order quantity (MOQ)?

A1: We don't have a strict MOQ-orders of any size are welcome. Pricing is based on the quantity ordered.

Q2: What payment terms do you typically offer?

A2: We usually ask for a 30%–50% T/T deposit upon order confirmation, with the balance paid before shipment once production is complete. Other options like L/C, Western Union (for small amounts), and PayPal are also available.

Q3: Do you offer customization?

A3: Yes, we provide OEM services with support from our own factory and experienced technical team.

Q4: What is your standard production lead time?

A4: Lead time depends on the product and order quantity, generally ranging from 7 to 15 days after order confirmation and deposit receipt. We'll give you a confirmed timeline once we know your specific needs.

Q5: Can I get samples? What are your sample policies?

A5: Yes, samples are available for quality evaluation. Sample fees and shipping costs are typically covered by the customer, but they can be refunded once a formal order is placed.

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