Contact UsIn modern power and communication engineering, cables not only need to conduct electricity, but also must maintain stable operation for a long time in complex environments. Traditional cable armoring often uses galvanized steel strip. However, in large-section single-core AC cables, steel strip, as a magnetic material, can generate significant eddy current losses, causing cable heating and reducing transmission efficiency. Therefore, non-magnetic aluminum alloy strip has become an alternative solution.
Among many aluminum alloys, 5052 aluminum strip-an Al-Mg series anti-rust aluminum alloy—stands out due to its comprehensive performance, including high strength, corrosion resistance, and lightweight properties.
Product Introduction of 5052 Aluminum Strip
5052 aluminum strip belongs to the 5xxx series aluminum-magnesium alloy, with magnesium as the main alloying element. It has medium strength, excellent corrosion resistance, and good processing and forming performance. Compared with 1060 pure aluminum strip, 5052 aluminum strip has higher strength; compared with steel strip, it is lighter in weight and offers better corrosion resistance.
5052 aluminum strip specially used for cable armoring is mostly supplied in H24 temper (half-hard). After cold rolling and stabilization treatment, it achieves a balance between strength and toughness, making it suitable for high-speed wrapping production lines.
In cable armoring, 5052 aluminum strip is usually supplied in coil form. After slitting, annealing, surface treatment, and other processes, it is used for spiral wrapping, longitudinal wrapping, or interlocked armor structures on the outer layer of cables. It protects the cable core, enhances compression and impact resistance, and improves environmental adaptability.
Chemical Composition (%)
| Alloy | Si | Fe | Cu | Mn | Mg | Cr | Zn | Ti | Other:Each | Other:Total | Al |
| 5052 | 0.25 | 0.4 | 0.1 | 0.1 | 2.2-2.8 | 0.15-0.35 | 0.1 | - | 0.05 | 0.15 | remainder |
Why Is 5052 Aluminum Strip Needed for Cable Armoring?
1. Lightweight
The density of aluminum is about one-third that of steel. Using 5052 aluminum strip as a cable armoring material can significantly reduce the overall weight of the cable.
2. Corrosion Resistance
Because 5052 aluminum strip contains magnesium, its surface can form a stable and dense oxide film, providing good resistance to humid air, rainwater, salt spray, and certain industrial environments.
3. Formability
5052 aluminum strip has good plasticity and ductility, allowing it to meet process requirements such as wrapping, embossing, and interlocked forming on high-speed continuous production lines.
4. Moderate Strength
The aluminum strip has relatively high tensile strength and good impact resistance, providing reliable mechanical protection for cables.
5. Non-Magnetic
Unlike steel strip, aluminum is a non-magnetic material. For single-core AC cables or applications with electromagnetic performance requirements, aluminum strip armoring can reduce eddy current losses and heating caused by magnetic materials.
6. Good Surface Quality
5052 aluminum strip has a bright silver appearance. After proper rolling and cleaning treatment, the surface is flat, clean, and free from obvious oil stains and scratches, which helps improve the overall quality of cable products.
7. Environmentally Friendly and Recyclable
Aluminum has high recycling value and can be reused, meeting the development trend of green manufacturing and low-carbon production.
Product Technical Parameters
| Item | Parameter Range |
| Alloy | 5052 |
| Temper | O / H24, etc. |
| Thickness Range | 0.1 mm – 3.0 mm |
| Thickness Tolerance | ±0.03 mm |
| Width Range | 10 mm – 1600 mm, can be slit |
| Width Tolerance | ±0.5 mm |
| Length Range | Customized |
| Inner Diameter | 150 mm / 300 mm / 400 mm, customizable |
| Surface Condition | Bright surface / degreased / clean surface |
| Edge Condition | Burr-free, crack-free, straight and flat square edge |
| Processing Method | Cold rolling + precision annealing |
Mechanical Properties (H24)
| Property | Value Range |
| Tensile Strength (Rm) | 170 – 305 MPa |
| Yield Strength (Rp0.2) | ≥ 65 MPa |
| Elongation (A50) | 3% – 12%, depending on temper |
| Hardness (HV) | 45 – 90 |
Physical Parameters
| Item | Parameter |
| Density | 2.68 g/cm³ |
| Thermal Conductivity | ~138 W/m·K |
| Electrical Conductivity | About 35% IACS |
| Melting Point | 607–650°C |
Typical Applications of 5052 Aluminum Strip in Cable Armoring
Power Transmission
Used for medium-voltage cables in urban distribution networks and industrial parks. It can replace traditional steel strip armor, reduce cable weight, and simplify installation.
Communication Optical Cables
Used for outdoor direct-buried optical cables. 5052 aluminum strip provides lightweight mechanical protection and resistance to rodent damage.
Marine Engineering
Used for submarine composite cables and offshore wind power platform cables. The seawater corrosion resistance of 5052 performs especially well in these applications.
Petrochemical Industry
In flammable and explosive environments, non-magnetic aluminum armor helps avoid spark generation while resisting corrosive gases.
Mainstream Cable Armoring Structures
| Interlocked Armor | The aluminum strip is pre-formed into an "S" shape and then spirally wrapped and interlocked. It offers strong impact resistance and flexibility, making it suitable for power cables. |
| Spiral Wrapping | The strip is spirally wound around the cable. This structure is simple and cost-effective, suitable for communication and control cables. |
| Longitudinal Wrapping | The strip is longitudinally wrapped and then welded or sealed. It provides excellent moisture resistance and shielding performance, making it suitable for submarine cables and cables used in high-humidity environments. |
5052 Aluminum Strip vs. Other Armoring Materials
| Property | 5052 Aluminum Strip | Galvanized Steel Strip | Pure Aluminum Strip (1060) | Stainless Steel Strip |
| Density (g/cm³) | 2.68 | 7.85 | 2.70 | 7.90 |
| Relative Weight | Light, baseline | 2.9 times heavier | Similar | 2.9 times heavier |
| Tensile Strength (MPa) | 230–290 | 300–450 | 60–100 | 500+ |
| Corrosion Resistance | Excellent | Average, poor after coating damage | Good | Excellent |
| Magnetism | Non-magnetic | Magnetic | Non-magnetic | Magnetic for most grades |
| Cost | Medium | Low | Medium | High |
| Processability | Excellent | Average, easy to spring back | Excellent | Poor |
What Should Customers Pay Attention to When Purchasing 5052 Aluminum Strip for Cable Armoring?
When choosing a 5052 aluminum strip supplier, it is recommended to focus on the following aspects:
Whether Customized Slitting Is Supported
Cable armoring has high requirements for width accuracy, so the supplier should have stable slitting capability.
Whether Material Certificates Can Be Provided
These include test documents for alloy grade, temper, mechanical properties, chemical composition, and other data.
Whether Surface and Edge Treatment Meets Requirements
Special attention should be paid to coil problems such as burrs, telescoping, misalignment, and collapsed coils.
Whether Batch Stability Is Reliable
Cable production is usually a continuous process, and material stability directly affects production efficiency.
Whether the Packaging Is Suitable for Long-Distance Transportation
Aluminum strip coils should be properly packed against moisture, collision, and oxidation to prevent damage during transportation.
HAOMEI Aluminum 5052 Aluminum Strip Supply
HAOMEI Aluminum Co., Ltd. supplies 5052 aluminum strip with complete thickness specifications. The width can be slit according to order requirements. We provide various aluminum strip materials for armored cables all year round, including 5154 aluminum strip, 3003 aluminum strip, 5052 aluminum strip, 5154A aluminum strip, and more.
In addition, HAOMEI Aluminum also supplies aluminum sheets, aluminum coils, embossed aluminum sheets, and other aluminum products.
