Extruded Aluminum Honeycomb Core
Extruded aluminum honeycomb core is a core material with an integrated hexagonal honeycomb structure formed directly by continuous extrusion of aluminum alloy profiles. The core difference from traditional aluminum honeycomb cores made by the "aluminum foil bonding and stretching" process lies in its forming method and overall strength. It is suitable for scenarios requiring higher structural stability, precision and impact resistance.
Core Differences: Extruded Type vs Traditional Bonded Type
| Dimension | Extruded Aluminum Honeycomb Core | Traditional Aluminum Foil Honeycomb Core |
| Forming Process | Direct extrusion of aluminum alloy profiles, integrated forming | Aluminum foil coating → stacking → hot pressing → stretching forming |
| Structural Strength | Continuous integral structure, high joint strength, stronger shear/compression resistance | Joints are bonding points; strength depends on adhesive layer and process |
| Dimensional Accuracy | Uniform honeycomb cells, stricter tolerances | Slightly lower accuracy affected by stretching process |
| Cost | High equipment investment; lower unit price for larger batches | Mature process, cost-effective for small batches |
| Typical Applications | Aerospace, ships, high-end curtain walls, automotive anti-collision | Architectural decoration, cabinet doors, conventional interior panels |
Key Specifications and Properties
Material: Commonly used 3003/5052/5056 aluminum alloy (3003 is cost-effective, 5052 has better corrosion resistance, 5056 is suitable for aviation-grade high-rigidity requirements).
Honeycomb Parameters: Honeycomb side length 3–10mm (3–4mm small cells for higher strength, 8–10mm large cells for lower cost);
Core thickness 10–50mm (10–25mm for construction, 5–15mm for transportation/aerospace).
Density Range: 30–200 kg/m³ (≥50 kg/m³ for building curtain walls, ≥120 kg/m³ for high-speed rail floors, balancing lightweight and rigidity).
Core Performance
✅Light weight and high strength: Better specific strength than most plates, greatly reducing structural weight.
✅ Impact resistance & energy absorption: Hexagonal continuous structure efficiently disperses external force, suitable for anti-collision and protection scenarios.
✅ Weather resistance & environmental protection: Aluminum alloy is waterproof, fireproof, corrosion-resistant and 100% recyclable.
✅ Thermal & acoustic performance: Closed honeycomb structure provides thermal and sound insulation, suitable for constant temperature and noise reduction scenarios.
Typical Application Scenarios
Aerospace: Aircraft fuselage and interior panels, weight reduction by more than 30%, meeting strict mechanical and temperature resistance requirements.
Rail Transit: Floors and partitions of high-speed rails/subways, vibration and wind pressure resistance, improving operational stability.
Ships & Marine Engineering: Hull panels, offshore platforms, salt spray corrosion resistance, adapting to high-humidity environments.
High-end Architecture: Super high-rise curtain walls, extra-long suspended ceilings (over 6m), wind pressure resistance without deformation, maintaining extreme flatness.
Automotive Industry: Anti-collision beams, battery pack shields, lightweight body panels, balancing safety and energy saving.
Special Industry: Rectifier plates for textile machines, support plates for heavy equipment, high-precision airflow control and high-load support.
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