The strength of 3A21 Aluminium tubular bus conductors is not high (only slightly higher than industrial pure aluminum) and cannot be strengthened by heat treatment, so cold working methods are often used to improve its mechanical properties. Good corrosion resistance, good weldability, and poor machinability.
The Chemical composition of 3A21 Aluminium tubular bus conductors
Si: 0.60
Fe: 0.70
Cu: 0.20
Mn: 1.0-1.6
Mg: 0.05
Zn: 0.15
Ti: 0.10-0.20
Al: margin
The advantages of 3A21 Aluminium tubular bus conductors
The 3A21 Aluminium bus conductors is an air-core conductor, with a small skin effect coefficient, and is beneficial to increase the initial voltage of the corona. Outdoor power distribution devices use tubular conductors, which have the advantages of small footprint, concise structure, and clear layout.
