Interlocking Armoured Cable Aluminum Alloy Strip
Interlocked armored cable aluminum alloy strip products have excellent corrosion resistance, high compressive strength (about 50% higher than steel strip) and good bending performance.
- Alloy:5052,5154,5154A
- Conductivity:≥58% IACS (20°C)
- Surface:Bright / oiled / anti-oxidation treated
- Edge:Deburred, rounded
Interlocking armoured cable aluminum alloy strip is a high-strength, lightweight, and flexible protective material for cables. It is typically made from 5000 series aluminum alloys such as 5052, 5154, and 5754, produced through precision rolling processes. The product features excellent corrosion resistance, high compressive strength (about 50% higher than steel strip), and outstanding bending performance.
Designed for interlocking armoring processes, the aluminum strip is pre-profiled to easily form an "S"-shaped curve. During armoring, the strip is helically wrapped around the cable core, with each "S"-shaped segment interlocking with the next to form a self-locking protective layer-similar to the flexible metal conduit used in desk lamps. Compared with traditional lapped or gap-type wrapping, this structure provides superior stability and protection. It is widely used in low-smoke, halogen-free, environmentally friendly AC90 and ACWU90 series power cables.
Aluminum strips produced by HAOMEI Aluminum feature smooth, clean surfaces free of oxidation spots, oil stains, and wrinkles. The edges are neat, and coils are tightly wound without telescoping or loosening. Dimensional tolerances strictly comply with GB/T 3880.3 standards, ensuring precise compatibility with armoring production and minimizing processing losses.
Product Specifications
| Item | Specification |
|---|---|
| Alloy | 5052 / 5154 / 5154A |
| Temper | O / H14 / H24 |
| Thickness | 0.2 mm – 1.5 mm |
| Width | 10 mm – 200 mm (customizable) |
| Length | 1000 mm – 16000 mm |
| Tolerance | Thickness: ±0.01–±0.03 mm; Width: ±0.5–±2.0 mm |
| Tensile Strength | 175–240 MPa |
| Yield Strength | ≥130 MPa |
| Elongation | ≥14% |
| Conductivity | ≥58% IACS (20°C) |
| Surface | Bright / oiled / anti-oxidation treated |
| Edge | Deburred, rounded |
Why Choose Aluminum Alloy Strip?
1. Excellent Mechanical Properties
High-strength aluminum alloys (e.g., 5052, 5154) provide strong tensile strength and ductility, effectively protecting cables from impact, compression, and mechanical damage.
2. Lightweight Advantage
With a density of only about one-third of steel, aluminum significantly reduces cable weight, lowering transportation costs and structural load on cable trays and supports.
3. Non-Magnetic & Low Loss
As a non-magnetic material, aluminum eliminates eddy current losses in single-core AC systems, reducing heat generation, improving transmission efficiency, and extending cable lifespan.
4. Superior Corrosion Resistance
A natural oxide layer provides excellent resistance to moisture, salt spray, and chemical corrosion—far outperforming galvanized steel without requiring additional coatings.
5. High Flexibility
The interlocking structure enhances bending performance, making it suitable for complex installations, including tight spaces and applications requiring frequent bending.
Production Process
The manufacturing process typically includes:
Aluminum ingot → Hot rolling → Cold rolling → Annealing → Precision slitting → Surface treatment → Final inspection
Strict control of thickness tolerance, flatness, and surface quality ensures excellent forming performance and consistency during interlocking armoring.
Comparison with Traditional Steel Strip Armoring
| Item | Interlocking Aluminum Alloy Strip | Galvanized Steel Strip |
| Material | 5000 series Al alloy (5052/5154) | Q195/SPCC galvanized steel |
| Weight | Light (2.7 g/cm³), ~60% lighter | Heavy (7.85 g/cm³) |
| Flexibility | Excellent, elongation ≥14%, 360° bending | Limited, prone to cracking |
| Corrosion Resistance | Excellent, no red rust after 500h salt spray | Poor, requires coating |
| Electrical Performance | Conductive, can serve as shielding/grounding | Poor, requires extra shielding |
| Formability | Excellent, stable interlocking, no breakage | Poor, prone to breakage, noisy |
| Cost | Slightly higher initially, lower lifecycle cost | Lower initial cost, higher maintenance |
| Installation | Lightweight, easy stripping, high efficiency | Heavy, difficult handling, complex installation |
Quality Control
Dimensional Accuracy: Thickness tolerance within ±0.03 mm; width tolerance within ±0.10 mm to ensure airtight interlocking and consistency.
Surface Quality: Smooth surface without cracks, bubbles, scratches, pinholes, or defects affecting performance.
Mechanical Consistency: Hardness variation within the same coil controlled within 5%, ensuring stable armoring pitch during long continuous production runs.
FAQ
Q1: Is aluminum alloy strip suitable for long-term outdoor use?
A: Yes. Aluminum alloys offer excellent corrosion resistance, making them ideal for outdoor and harsh environments.
Q2: Can you customize special widths and thicknesses?
A: Yes, customization is supported based on drawings or technical requirements.
Q3: What is the minimum order quantity (MOQ)?
A: Typically 3–5 tons depending on specifications; negotiable.
Q4: Do you provide samples?
A: Yes, free samples are available (shipping cost borne by the customer).
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