High-Temperature Polycrystalline Alumina Fiber

Product Description：

High-Temperature Polycrystalline Alumina Fiber 95-N is a polycrystalline alumina fiber designed for industrial thermal insulation applications. Composed primarily of alumina (Al₂O₃) and silica (SiO₂), it is manufactured using an internationally advanced sol–gel process.

As a new generation of ultra-lightweight high-temperature insulation material, ALWOOL 95-N features a bright white appearance with a smooth, soft, and resilient texture. It offers a higher service temperature than ALWOOL 72-M polycrystalline alumina fiber and can be further processed into fiber boards, customized shaped components, and other engineered forms.

This material is widely used in high-temperature insulation systems and demanding applications such as aerospace and other advanced thermal environments.

Product Features:

Excellent high and low-temperature resistance, with an operating range of 1400°C to 1800°C;

Superior resistance to acids and alkalis;

Fiber is free of shot balls (≥45μm); lower shot content results in better thermal insulation and refractory performance;

Excellent electrical insulation properties;

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

Product Applications:

Aerospace thermal protection systems

High-temperature furnace linings / insulation panels

Rocket engine insulation layers

Lining for molten metal transfer ladles

Insulation cylinders for photovoltaic crystal growth 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 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 operate with flexible MOQ policies to accommodate diverse client needs. There is no universal minimum; requirements vary by product. We provide competitive pricing that scales with order quantity, ensuring value for both small and large volume purchases.

Q2: What are your standard payment terms?

A2: Our standard terms are: 30-50% deposit via T/T upon order confirmation, with the balance paid before shipment after production is complete. We are flexible and also accept other methods such as L/C, PayPal (for smaller amounts), and Western Union.

Q3: Do you offer customization or OEM services?

A3: Absolutely. With our in-house factory and dedicated R&D team, we specialize in OEM and ODM services. We can customize products according to your specifications, including dimensions, performance parameters, and branding.

Q4: What is your typical production lead time?

A4: Lead times depend on the product complexity and order quantity. Typically, production takes 7 to 15 working days after we confirm your order and receive the deposit. We will provide a precise schedule upon finalizing your project details.

Q5: Do you provide samples? What is your sample policy?

A5: Yes, we provide samples for quality evaluation. Sample fees and shipping costs are usually charged upfront. However, these costs can be deducted or refunded when you proceed with a formal bulk order.

Q6: How do you ensure product quality and handle export packaging?

A6: Quality is ensured through strict in-process inspections and a final QC check before shipment. For export, we use robust, industry-standard packaging-including export-grade cartons, wooden crates, or pallets-to guarantee that products arrive safely and in perfect condition.

Q7: Can you provide product certifications or test reports?

A7: Yes, we can provide relevant material test reports (MTRs) and product certification documents upon request. Many of our products comply with international standards. Please let us know your specific certification requirements so we can furnish the appropriate documentation.

Q8: What are your shipping options and how do you handle logistics?

A8: We have extensive experience in global logistics and can arrange shipment via air, sea, or express courier (DHL, FedEx, etc.). We work with reliable freight forwarders to ensure cost-effective and timely delivery. We will provide shipping quotes and support with all necessary export documentation.

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