Copper and copper alloys are always primed and top coated due to its low resistance to corrosion.

Copper and copper alloys are always primed and top coated due to its low resistance to corrosion.

• A. True
• B. False
• C. Not applicable
• D. Sometimes

Answer: (B)

Copper and its alloys resist many atmospheres well enough that they aren’t treated with primers and top coats as a blanket rule. The protective film that forms on copper—often a stable patina—helps limit corrosion in normal environments, and copper is commonly used bare or with simple insulation in electrical applications. Protective coatings or platings are used selectively, in harsher environments or where particular cosmetic or electrical requirements demand it, not automatically because copper is “low resistance to corrosion.” So the statement that they are always primed and top coated is not correct.

Copper and its alloys resist many atmospheres well enough that they aren’t treated with primers and top coats as a blanket rule. The protective film that forms on copper—often a stable patina—helps limit corrosion in normal environments, and copper is commonly used bare or with simple insulation in electrical applications. Protective coatings or platings are used selectively, in harsher environments or where particular cosmetic or electrical requirements demand it, not automatically because copper is “low resistance to corrosion.” So the statement that they are always primed and top coated is not correct.