Aluminum alloy cables utilize AA-8000 (8030) series aluminum alloy as conductors. Developed using advanced production processes and technologies that differ from those used in traditional cables, these cables offer superior electrical performance, safety, and economical and environmental performance, effectively replacing copper conductors with alloy materials.

The aluminum alloy rods required for aluminum alloy cable conductors are strictly controlled in accordance with ASTM (American Society for Testing and Materials) B800 standard for 8000 series aluminum alloy wire for electrical applications. These conductors are manufactured through a specialized synthesis and annealing process using appropriate amounts of copper (Cu), iron (Fe), magnesium (Mg), and other rare earth alloys. All performance indicators meet the requirements of GB/T3956.

The AA-8000 (8030) series aluminum alloy cable conductors are certified by UL (USA) and CUL (Canada). , SAIGLOBAL (Australia), China Electric Power Certification, and monitoring by China's most authoritative National Wire and Cable Testing Center, State Grid Wuhan High Voltage Research Institute, and the National Fireproof Building Materials Quality Supervision and Inspection Center. The AA-8000 (08030) series aluminum alloy conductors meet the requirements of CSA Standard C22.2, Clause 38, for ACM alloy conductors, and comply with the latest performance requirements of GB/T12706 and GB/T31840, as well as the relevant UL standards for the AA8000 series.

Aluminum alloy cables are widely used in Europe and the United States, with silver alloy conductors accounting for 90% of cable transmission and applications. Aluminum alloy cables were developed in the United States in 1958 and have been in use for 42 years. Half a century of use and verification has fully demonstrated the excellent electrical performance and safety of aluminum alloy cables.

Tianhong Aluminum Alloy Advantages

● We have exported aluminum alloy conductors for the past 10 years, with annual exports of alloy conductors and aluminum alloy cables reaching nearly 1 billion RMB.

● We are the primary supplier of alloy conductors (aluminum alloy rods and alloy wire) to domestic aluminum alloy cable companies.

● We possess seven publicly listed aluminum industrial bases, offering unparalleled resource advantages.

● With 20 years of dedicated expertise in the R&D, smelting, and processing of alloy conductors, we possess a strong technical advantage that is unrivaled in the industry.

● As a professional alloy conductor R&D and production company, Tianhong can provide partners with comprehensive solutions integrating R&D, design, production, and service for new power transmission products.

1. Excellent Conductive Performance

According to GB/T3956, when the outer diameter of aluminum alloy cables (produced through a special compacting process) is 1.1-1.2 times that of copper cables (the conductor outer diameter increases by 1-18mm), their electrical performance is similar. However, aluminum alloy cables weigh only half as much as copper cables with equivalent electrical performance, resulting in superior overall performance.

2. Stable Connection Performance

The alloy composition of aluminum alloy conductors significantly improves their connection performance, which is the fundamental reason for their approval as aluminum conductor material (ACM). In particular, the iron added during conductor annealing imparts high creep resistance, ensuring connection stability even under prolonged overheating. When using CSA-approved 90°C-rated mechanical connectors (marked AL9CU or AL90CU), connector tests conducted at Georgia Power's testing facilities in the United States have shown that their performance is equivalent to that of copper conductors connected in the same manner.

3. Superior Bendability

The minimum bend radius of aluminum alloy cable is 7 times the cable's outer diameter. According to GB/T12706, the bending radius for copper-core cables during installation is 10-20 times the cable diameter. Therefore, aluminum alloy cable is suitable for installation in smaller spaces, and the required tensile force during installation is significantly lower than that of copper-core cables. Its flexibility is particularly prominent in small distribution cabinets and installations in confined spaces, making it more economical, efficient, and quick to use.

4. Tensile Strength

The tensile strength of aluminum alloy cable is 1.3 times that of aluminum-core cable, comparable to that of copper-core cable. Furthermore, compared to copper-core cables with equivalent performance, aluminum alloy cables weigh only half as much, significantly increasing the reliability of long-span installations. Its advantages are particularly evident in wide-width building applications, and it can significantly reduce cable bridge and associated installation costs.

5. Excellent Anti-Rebound Performance

The rebound performance of alloy cables is 40% less than that of copper cables. At room temperature, copper and alloy cables were bent 90 degrees. After stress release, the average rebound angle of the cables is shown in the figure:

6. Corrosion Resistance

Aluminum's inherent corrosion resistance stems from the fact that a dense oxide film approximately 2-4 μm thick forms immediately upon contact with air. This film is extremely dense and exceptionally resistant to all forms of corrosion, enabling it to withstand the harshest environments. Testing by national-level testing agencies such as the Beijing General Research Institute of Nonferrous Metals, along with analysis of engineering case data, has shown that rare earth aluminum alloys have an annual corrosion rate of zero or near zero in environments exposed to hydrogen ions, seawater, marine atmosphere, salt spray (dry-wet alternating), saturated HzS, sulfur, high temperature, and high pressure. Furthermore, the optimized internal structure of the alloy conductor and the use of silane-crosslinked polyethylene insulation extend the service life of aluminum alloy cables by over 10 years compared to copper cables.

7. High-Strength Creep Resistance

The addition of iron to aluminum alloy conductors creates high creep resistance. The special alloy formulation and heat treatment process significantly reduce the metal's tendency to creep under heat and pressure. In a 500-hour creep test, the creep resistance of AA8000 series alloys was found to be approximately 300% that of pure AA1350 aluminum conductors, making it roughly equivalent to copper conductors.

8. Excellent Economic Performance

In terms of investment cost, alloy cables with the same current carrying capacity are significantly lower than copper-core cables. Alloy cables also offer more flexible installation options, allowing for open installation along walls and ceilings, saving space and cable tray costs. Furthermore, their ease of installation reduces labor costs and shortens construction time. Once customers choose aluminum alloy cables, from initial design and selection to installation, they will reduce cable tray and labor costs. Furthermore, alloy cables offer significant price advantages over copper-core cables, resulting in significant investment savings and excellent overall performance and economic benefits.

9. Application Analysis

In developed European and American countries like the United States, France, and Canada, aluminum alloy conductors account for as much as 90% of all cables, with a history of nearly half a century. In China, aluminum alloy cable is just beginning to gain traction. Replacing copper with aluminum aligns with the goal of building a conservation-oriented society. The aluminum alloy cable market in my country is projected to grow rapidly over the next three to five years, reaching a market size of at least 200 billion yuan. Over the past three years, the aluminum alloy cable industry has maintained annual growth rates of three to five years, demonstrating enormous market demand.