Corrosion Resistance
Superior corrosion resistance.
Erosion corrosion is a common cause of failure in fabricated architectural copper components. To the layman’s eye, copper looks as if it could last forever. But the softness that makes copper so easy to form also makes it susceptible to wear from concentrated water flow, especially in valleys, side walls or bends in rain drainage systems. The stainless steel in CopperPlus, however, acts as a barrier that limits erosion corrosion. So while it’s soft on the outside, it’s tough as nails on the inside. Corrosion resistance like that is hard to resist.
CopperPlus was originally developed in the 1960s and installed widely throughout the United States. Close inspection of the installations shows no evidence of red rust or other defects and no significant stainless steel corrosion. The inspections also found the same patina formation that would be expected with copper.
Erosion corrosion of roof corner; 430SS layer in the CopperPlus prevented erosion through the material thickness.
Cu
CopperPlus
Cu-Plated 439SS
of ASTM B117 salt spray
Cu
CopperPlus
Cu-Plated 439SS
of ASTM B117 salt spray