1600C Polycrystalline Alumina Fiber Board

Product Description：

1600C Polycrystalline Alumina Fiber Board is a high-temperature insulation board made primarily of polycrystalline alumina fiber, supplemented with inorganic binders and special additives, through processes such as wet vacuum filtration, extrusion, drying, and polishing. This product utilizes an advanced sol-gel process, where soluble aluminum salts are converted into a colloidal solution, which is then centrifuged at high speed to form fiber preforms. These preforms are then dehydrated, dried, and subjected to medium-to-high temperature heat treatment to crystallize. The main crystalline phase is α-Al₂O₃ corundum, supplemented with a small amount of mullite, achieving a chemical purity of 95%~99% or higher. The product is pure white and combines the high-temperature stability of crystalline materials with the excellent thermal insulation properties of fiber materials, enabling long-term stable operation under extreme high-temperature conditions up to 1600℃.

Product Features:

Ultra-high temperature stability: Utilizing a polycrystalline microcrystalline structure, it maintains phase stability at high temperatures, allowing for long-term continuous use at 1500~1600℃, and exhibits excellent high-temperature creep resistance.

Superior thermal insulation and energy saving: Low heat capacity and low thermal conductivity result in low heat storage, significantly reducing heat loss. Compared to traditional refractory bricks, energy savings reach 15~45%, significantly reducing kiln operating costs.

Excellent thermal shock resistance: The product possesses excellent thermal shock resistance, withstanding rapid heating and cooling cycles without cracking or spalling, making it particularly suitable for intermittent kilns.

Strong resistance to airflow erosion: The product can be in direct contact with flames and high-speed airflow, exhibiting outstanding wind erosion resistance, maintaining structural integrity even in harsh environments with airflow velocities up to 90m/s.

Good chemical stability: Excellent resistance to acid and alkali corrosion, allowing use in various atmospheres including acidic, oxidizing, reducing, and vacuum conditions.

Easy to process: The product is made of non-brittle material, has good elasticity, and is easy to cut, drill, and mill. It can be processed into various irregularly shaped parts and precision-sized products, and is convenient for construction and installation.

Green and environmentally friendly: The product does not contain asbestos or other harmful substances, and does not release toxic gases during high-temperature use, meeting 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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