Overview
Ceramic Fiber Blanket 1260°C Standard is the industrial baseline grade — needle-punched amorphous alumina-silica fiber blanket rated for continuous service up to 1260°C. The fiber chemistry (Al₂O₃ ~46%, SiO₂ ~54%, sub-1% trace oxides) is the melt-spun standard that has served as the workhorse hot-face insulation across the global furnace, kiln, and process heating industries since the 1970s.
The blanket's defining performance is a combination of three industrial fundamentals:
- Thermal conductivity — typical 0.06 W/(m·K) at 400°C, rising to 0.10–0.13 W/(m·K) at 800°C and 0.16–0.20 W/(m·K) at 1,000°C. Substantially below dense refractory brick (1.0–1.5 W/(m·K)) and roughly half the per-mass insulation cost of mineral wool above 700°C.
- Service temperature — 1260°C maximum continuous, with the linear shrinkage limit at this temperature falling within the industry-accepted 3–4% over a 24-hour test. Brief excursions to 1300°C+ are tolerated without immediate damage but accelerate long-term shrinkage.
- Thermal shock resistance — direct flame impingement at 1300°C produces no cracking or delamination, a defining advantage versus refractory brick and castable monolithic linings.
The 1260°C standard grade serves approximately 70% of industrial insulation specifications by surface area, sized for the dominant furnace operating range and price-sensitive procurement specifications. Both 96 kg/m³ and 128 kg/m³ bulk densities are stocked, with 128 kg/m³ as the default unless otherwise specified.
Technical Specifications
| Property | Unit | Value |
|---|---|---|
| Fiber chemistry | — | Amorphous alumina-silica (melt-spun) |
| Al₂O₃ content | % | 45–48 |
| SiO₂ content | % | 52–55 |
| Fe₂O₃ content | % | ≤1.0 |
| Bulk density | kg/m³ | 96 or 128 |
| Linear shrinkage (24h at 1260°C) | % | ≤3.0 |
| Thermal conductivity at 400°C | W/(m·K) | 0.06–0.08 |
| Thermal conductivity at 800°C | W/(m·K) | 0.10–0.13 |
| Thermal conductivity at 1,000°C | W/(m·K) | 0.16–0.20 |
| Tensile strength | kPa | ≥55 |
| Fire classification (GB 8624) | — | Class A (non-combustible) |
| Asbestos content | — | None |
| Standard roll dimensions | mm | 7,200 × 610 or 3,600 × 1,220 |
| Available thicknesses | mm | 12.5, 19, 25, 38, 50 |
Applications
Industrial Furnace Hot Face
The dominant 1260°C blanket application — needle-punched blanket installed as the hot-face liner on the interior of industrial furnaces operating in the 800–1260°C range. Standard installation uses ceramic or stainless anchor pins (4–8 per square metre) welded to the furnace shell, with blanket layers compressed onto the pins and the outer face capped with washer-and-cup retention. Typical hot-face thickness is 50–75 mm for continuous-operation reheat furnaces, 75–100 mm for batch furnaces with thermal-cycling exposure.
Flue Duct Internal Lining
Industrial flue ducts and stacks operating at 600–900°C use 1260°C standard blanket at 50–75 mm thickness as internal hot-face lining, with stainless-steel duct shell providing the structural enclosure. The application is a common retrofit of legacy calcium silicate or castable monolithic linings — the blanket's 60% weight reduction and 50% installation-time savings deliver project-cost benefits that drive specification choice.
Heating Equipment Hot Face
Industrial heating equipment — radiant tube furnaces, electric resistance heaters, hot-gas generators — uses 1260°C standard blanket as the heating-element-adjacent hot face. The blanket's low thermal mass enables fast heat-up cycles (versus brick or castable linings), and the standard grade's cost-effectiveness suits the price-sensitive procurement typical of OEM heating equipment manufacturers.
Cement and Lime Industry Backup Insulation
Cement rotary kiln cold-face backup and lime kiln preheater hot-face insulation use 1260°C standard at 75–100 mm thickness. The application takes advantage of the blanket's continuous-service stability across multi-year kiln campaigns, paired with calcium silicate cold-face board for outer-shell mechanical durability.
Packaging & Storage
Standard packaging is PE-film-wrapped rolls — 7,200 × 610 mm × 25 mm thickness is the workhorse stock format — with 4 to 8 rolls per pallet depending on selected thickness. Container shipment is typically 1,500–2,500 m² per 40' container in stock thickness; heavier thicknesses (38 / 50 mm) reduce packing density modestly. MOQ is 50 m² for sample shipment, 500 m² for production orders, 5,000 m² for full-container shipment.
Store dry, away from direct rain or ground-water exposure. The amorphous fiber is hygroscopic over extended damp storage; performance is preserved on installation through standard pre-installation drying (one furnace cycle at operating temperature) but storage in flooded conditions should be avoided. Rolls should be stored on pallets clear of the floor; long-term horizontal stacking is acceptable.
Standard P100 / N95 respirator and eye protection during cutting and handling. Vacuum cleanup of loose fiber post-installation. Off-cuts and trim waste can be recycled through manufacturer take-back programmes for re-melt and re-spinning into new blanket.
Related Products
- Ceramic Fiber Blanket Hub — full 6-grade portfolio
- Ceramic Fiber Blanket 1260°C 160 kg/m³ — higher density variant for vibration-prone applications
- Ceramic Fiber Blanket 1360°C High-Purity — extended temperature ceiling for intermediate-temperature furnaces
- Ceramic Fiber Blanket 1430°C HP — petrochemical fired heater grade
- METHERM® Microporous M 1000 — cold-face microporous backup for higher thermal performance per millimetre
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