Steel Vs. Aluminum: Choosing The Right Crossarms for Your Power Line

Steel Cross Arm

Strength and durability: Steel has extremely high tensile strength and durability, making it suitable for carrying heavy loads and withstanding severe weather such as strong winds, ice and snow. They are usually used with immobility clamps and cable storage assembly.

Anti-corrosion treatment: Although steel is prone to rust, its corrosion resistance can be improved and its service life extended by galvanizing or coating.

Applicable environment: Under high load or harsh environmental conditions (such as mountainous areas or coastal areas), steel cross arms provide more reliable support.

Aluminum Cross Arm

Portability: Aluminum has low density and light weight, which makes aluminum crossarms more convenient to install and transport, helping to reduce construction costs and time.

Corrosion resistance: Aluminum is naturally resistant to corrosion and is particularly suitable for use in humid or salt spray environments with low maintenance requirements.

Electrical conductivity: Aluminum has good electrical conductivity and is suitable for power transmission, but it should be noted that aluminum needs to be handled more carefully at the connection points to avoid oxidation affecting the current flow.

Lightweight and corrosion-resistant: If the construction site has strict weight requirements or the environmental conditions are relatively humid, aluminum cross arms are a better choice.