Overview
Ceramic Fiber Blanket 1260°C 160 kg/m³ is the high-density variant within the 1260°C amorphous fiber blanket range — same fiber chemistry as the standard 128 kg/m³ grade (Al₂O₃ ~46%, melt-spun amorphous), with increased bulk density delivering three industrial-relevant performance differences:
- 25% higher tensile strength — typical ≥70 kPa versus ≥55 kPa for the standard 128 kg/m³ grade. The higher density mechanical reinforcement is critical for installations subject to handling stress, vibration, or installation-time tear forces.
- Lower thermal radiation transmission — at the same blanket thickness, the 160 kg/m³ density delivers thermal conductivity 0.09–0.12 W/(m·K) at 800°C (vs 0.10–0.13 W/(m·K) for the 128 kg/m³ grade). The improvement is most pronounced above 700°C where radiant heat transfer dominates.
- Reduced gas permeability — the higher density restricts gas-phase convection and flue-gas penetration, supporting applications where the blanket also performs a sealing function.
The 160 kg/m³ grade trades a higher per-square-metre material cost for application-context durability advantages, with the procurement decision driven by service-environment requirements rather than thermal-performance ceiling considerations. Common procurement justifications include vibration-rated industrial duct linings, portable industrial heating equipment, and locations where the blanket must survive repeated maintenance access traffic.
Technical Specifications
| Property | Unit | Value |
|---|---|---|
| Fiber chemistry | — | Amorphous alumina-silica (melt-spun) |
| Al₂O₃ content | % | 45–48 |
| SiO₂ content | % | 52–55 |
| Bulk density | kg/m³ | 160 |
| Linear shrinkage (24h at 1260°C) | % | ≤3.0 |
| Thermal conductivity at 400°C | W/(m·K) | 0.055–0.075 |
| Thermal conductivity at 800°C | W/(m·K) | 0.09–0.12 |
| Thermal conductivity at 1,000°C | W/(m·K) | 0.14–0.18 |
| Tensile strength | kPa | ≥70 |
| 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
Vibration-Prone Duct and Pipe Linings
Industrial flue ducts and process gas pipes mounted on rotating equipment or in seismic-active zones use 1260°C 160 kg/m³ blanket where the standard 128 kg/m³ variant would show accelerated mechanical fatigue. Applications include cement rotary kiln preheater duct linings, marine vessel exhaust runs adjacent to engine-room vibration sources, and cogeneration plant flue runs in earthquake-prone regions. Standard installation uses anchor pins at increased density (8–12 per square metre) to accommodate the higher loading.
Portable Industrial Furnaces
Field-portable induction heating furnaces, mobile annealing units, and on-site welding pre-heat equipment use 160 kg/m³ blanket internally as the hot-face liner. The blanket's higher tensile strength survives the repeated transport-and-install cycle that defines portable equipment service life, where the 128 kg/m³ standard grade would suffer accelerated lining wear from each transport cycle.
Retort and Bell Furnace Linings
Retort and bell furnace linings — bell-up applications where the lining is the upper, retracting portion of a periodic heat-treatment furnace — use 160 kg/m³ blanket as the standard specification. The retort cycle includes mechanical stress from bell raising and lowering, plus repeated thermal cycling that compounds mechanical fatigue. The higher-density grade extends bell-lining service life by 30–50% versus the standard 128 kg/m³ grade.
Maintenance Access Wall Linings
Industrial furnace walls subject to routine maintenance access traffic — refractory inspection ports, burner-tile replacement zones, instrument tap-off locations — use 160 kg/m³ blanket where the standard grade would show progressive surface damage from maintenance personnel impact, tool contact, and inspection-instrument handling. The thicker, denser blanket cross-section absorbs minor mechanical incidents without compromising thermal performance.
Module Construction for Pre-Fabricated Furnace Linings
Pre-fabricated furnace lining modules (200–300 mm cubes or rectangles compressed into the manufacturer's module shape and held by an internal frame) are typically built from 160 kg/m³ blanket because the higher density better preserves module integrity during transport and field installation. Module-construction installations are common for new-build petrochemical fired heaters, ammonia plant reformers, and large industrial annealing furnaces.
Packaging & Storage
Packaging is identical to the 128 kg/m³ standard grade — PE-film-wrapped rolls in 7,200 × 610 mm or 3,600 × 1,220 mm formats. Due to the higher density, container capacity per 40' container is reduced versus the standard grade: typical 1,200–2,000 m² per container in 25 mm thickness. MOQ is 50 m² sample, 500 m² production, 4,000 m² full-container shipment.
Storage and handling requirements are identical to the standard grade — dry storage, P100 / N95 respirator for installation cutting, vacuum cleanup of loose fiber. Manufacturer take-back programmes accept off-cuts and decommissioned blanket for re-melt and re-spinning.
Related Products
- Ceramic Fiber Blanket Hub — full 6-grade portfolio
- Ceramic Fiber Blanket 1260°C Standard — 128 kg/m³ baseline grade
- Ceramic Fiber Blanket 1360°C High-Purity — extended temperature for similar applications
- Ceramic Fiber Blanket 1430°C Polycrystalline — premium grade for high-vibration high-temperature service
- METHERM® Microporous M 1000 Max — high-strength microporous board alternative for compressive-load service
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