Practicality and Advantages of Copper-Bonded Steel Flat Bar
1. High Mechanical Strength with Excellent Conductivity
Copper-bonded (and copper-clad) steel flat bars combine the tensile
strength of steel with the high electrical conductivity of copper.
This bimetallic structure ensures robust mechanical performance
alongside reliable current flow—ideal for grounding, earthing, and
structural electrical applications.
2. Enhanced Corrosion Resistance
The outer layer of copper offers superb corrosion resistance,
protecting the steel core from environmental degradation.
This makes copper-bonded steel especially suitable for long-term
use in outdoor and underground grounding systems.
3. Superior Durability and Long Service Life
Manufactured via cold rolling, hot drawing, or metallurgical
bonding, these flat bars ensure a strong copper-steel interface
that resists peeling, cracking, or delamination.
Typical copper layer thickness is ≥ 0.3 mm, and tensile strength ≥
600 N/mm², giving a service life of 30–50 years or more.
