Polycrystalline Fiber Wool

Polycrystalline fiber wool (PCW) are top-tier high-temperature insulation materials designed for extreme environments of 1,600°C(3200℉). Featuring a “zero-glass-phase” polycrystalline structure, they deliver unmatched energy-saving benefits compared to traditional ceramic fibers including superior creep resistance, ultra-low thermal conductivity, and zero powdering or shrinkage. Trusted in over 50 countries and regions worldwide, our PCW blankets provide high-efficiency thermal solutions that meet strict international standards for precision kilns, heavy metallurgy, and other high-temperature industries.

6-25mm
Thickness

100-130kg/m³
Bulk Density

China
Origin

1600℃
Classification Temperature

Technical Specifications of 1600°C Polycrystalline Mullite Blanket

The table below summarizes the key technical parameters of REBO’s 1600°C-grade polycrystalline mullite blanket. All values are measured under standardized laboratory conditions. Customized grades and dimensions are available upon request.

Polycrystalline Fiber Bulk/Blanket Typical Product Properties
PCW Product PCW Blanket Veneer Module Veneer Module
Product Code PCW-72T PCW-80 PCW-72
Temperature Grade(°C) 1600 1600 1600
Nominal Density(kg/m³) 100~130 100 100
Permanent Linear Shrinkage(%) (1500°Cx6hr)<1 (1500°Cx6hr)<1 (1400°Cx6hr)<1.5
Al2 O3(%) 72 80 72
Al2 O3 +SiO2(%) ≥99.7 ≥99 ≥98.8
Fe2 O3(%) 0.1
Availability 7200x610x6/12.5/25 200x100x50 200x100x50
Note: Test data shown are average results of tests conducted under standard procedures and are subject to variation. Results should not be used for specification purposes. The products listed comply to ASTM C892.

PCW Blanket Sizes and Logistics

  • Polycrystalline Fiber Wool Sizes: 7200*610*6/12.5/25mm (Custom sizes available upon request).
  • Packaging Options: Export-grade woven bags or heavy-duty cardboard cartons.
  • Lead Time: 7–15 days for standard items; delivery for customized orders will be confirmed based on specifications; Large Project Orders (>50MT): Subject to production scheduling (contact us for a dedicated project timeline).
  • Supported Incoterms: EXW, FOB (Qingdao/Tianjin/Shanghai), CFR, CIF, DDP, etc.
  • Logistics Modes: Full Container Load (FCL), Less than Container Load (LCL), Air Freight, and Express Courier.
  • Documentation Support: Full assistance with Commercial Invoices, Packing Lists, Certificates of Origin (CO), Material Test Reports (MTRs), and SGS Inspection Certificates.

Below is a comparison table to help you choose the right packaging.

Feature Woven Bags Cartons
Loading Capacity Maximized (Fits 10%–15% more rolls) Standard (Rigid shape leaves fixed gaps)
Shipping Cost Lower (More rolls per container cuts freight) Higher (Lower loading density per container)
Protection Basic (Tear-resistant, but potential edge squeezing) Premium (Rigid walls for perfect edge protection)
Handling & Storage Best for loose loading and manual unloading Perfect for pallets and easy forklift handling
Best For… Maximizing budget and saving freight costs High-end projects and neat warehouse stacking

REBO Polycrystalline Fiber Wool in Global Projects

REBO polycrystalline fiber wool is highly trusted in premier industrial markets including the US, Canada, Italy, the Netherlands, Saudi Arabia, and the UAE. Built to meet strict North American ASTM and European energy standards, our polycrystalline fiber wool undergo rigorous pre-shipment thermal shrinkage tests and come with full TDS/MSDS compliance. Today, over 500 smelters and kiln operators worldwide rely on REBO to maximize insulation lifespan, cut energy costs, and deliver the ultimate high-temperature solution.

Polycrystalline Mullite Blanket VS Standard Insulation Materials

Not all high-temperature insulation products are created equal. Here is how polycrystalline mullite blanket compares to the main alternatives:

Property PCW Standard RCF Soluble Fiber Blanket
Max Service Temp. 1600°C 1260°C 1200°C
Thermal Shrinkage Very Low (≤2%) High (3–5%) Medium-High (3–4%)
Flexibility High High High
Thermal Conductivity Low Low-Medium Low-Medium
Chemical Stability Excellent Good Fair (Vulnerable to strong acids/alkalis)
Health & Safety Standard handling Regulated in some regions Eco-friendly/Body-soluble
Price (relative) Medium-High Low Medium-Low
Best Application >1400℃ continuous high-heat <1200℃ standard insulation Eco-conscious/Lower-heat applications

REBO Manufacturing and Technical Excellence of Polycrystalline Fiber Wool

Premium Raw Materials & Tech

Sol-Gel Spinning: We process high-purity alumina and silica via certified sol-gel methods to ensure uniform chemistry.
Elite Fiber Microstructure: Our polycrystalline fiber wool features a precise 2–4 µm fiber diameter and an exceptionally low shot content (≤1.0%).
Enhanced Performance: This clean microstructure ensures less dust, safer onsite handling, and consistent thermal insulation.

Rigorous Quality Control

ISO 9001 Protocols: Every production batch follows strict ISO quality management across multiple critical checkpoints.
Full Batch Traceability: Each roll comes with a complete Material Test Report (MTR) verifying chemical and physical properties.
Third-Party Inspection: We fully support independent verification by
SGS, for large infrastructure projects.

Engineering & Design Flexibility

Custom Product Forms: Available in flexible rolls, pre-cut panels, folded modules, or customized vacuum-formed shapes.
Crack-Free Adaptability: The lightweight and flexible structure easily fits complex curved furnace surfaces without cracking.
Free Technical Support: Our engineering team provides complimentary design support, including thickness and anchor calculations.

Factory-Direct Price Advantage

30%–50% Cost Savings: By removing trading margins, we deliver Western-standard quality at a much lower landed cost.
Volume Pricing Models: We offer highly competitive ex-works pricing and attractive volume discounts for annual agreements.
Bonded Warehouse Program: Specialized domestic bonded warehouse options are available to secure regular, repeat global orders.

Strict International Compliance

Global Standard Testing: All REBO polycrystalline fiber wool is fully tested and documented in accordance with ASTM, ISO, and DIN standards.
REACH & RoHS Certified: Our polycrystalline mullite fibers contain zero hazardous substances under current EU green directives.
Multi-Lingual Compliance: Regulatory Safety Data Sheets (SDS) are readily available in English, German, and French languages.

Complete Global Thermal Solutions

One-Stop Supply Chain: We provide complete lining packages, including matching boards, modules, castables, and hardware.
Proven Refinery Success: Trusted in major refinery expansion projects across the United States, Germany, and the Netherlands.
Elite Kiln Deployments: Regularly specified by premium high-temperature ceramic kiln manufacturers in Italy, Spain, and Canada.

FAQs of REBO Polycrystalline Fiber Wool

Q: Why Should I Choose Polycrystalline Fiber Wool over Standard Rcf (Refractory Ceramic Fiber)?

A: The primary advantage is “zero-glass-phase” crystal stability. Standard RCF (1260°C) contains a glass phase that crystallizes and shrinks heavily when exposed to high heat over time, leading to cracking and lining failure. PCW retains its crystalline structure at extreme temperatures, offering near-zero linear shrinkage (≤2%), excellent chemical resistance, and a significantly longer service life that slashes furnace maintenance costs.

Q: Does REBO Polycrystalline Fiber Wool Comply with European Reach and Rohs Environmental Standards?

A: Yes, absolutely. REBO polycrystalline mullite fibers do not contain any regulated hazardous substances or organic binders. They are fully compliant with the latest EU REACH and RoHS directives. We provide comprehensive, multi-lingual Safety Data Sheets (SDS) in English, German, and French to ensure flawless safety compliance for projects in Europe and North America.

Q: Can I Get Custom Dimensions, Pre-Cut Panels, Or Modules for Our Specific Kiln Design?

A: Yes. While our standard dimensions are 7200*610*6/12.5/25mm, REBO offers full engineering flexibility. We can supply custom thicknesses (up to 50mm, custom widths, pre-cut panels, folded modules, and specialized vacuum-formed shapes. Our technical team also provides complimentary lining design and anchor spacing calculations. See some customized sizes on REBO Facebook.

Q: Do You Provide Free Samples of Polycrystalline Fiber Wool for Industrial Testing Before We Place a Bulk Order?

A: Yes, we support qualified engineering and procurement projects with **free material samples. This allows your technical team to verify our fiber diameter and overall thermal quality in your own laboratory or test furnace before making a commercial commitment.

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