Grounding & Electrical Applications:
Use “Copper-Clad Steel Flat Bar” or “Copper-Plated Steel Flat Bar”, depending on whether the focus is on structural layering (clad) or surface plating (plated).
Marketing & Specifications:
Copper-Clad tends to be favored in spec sheets for its implication of durability and integrated construction, while Copper-Plated can emphasize corrosion resistance or conductivity surface treatment.