Dear sirs, thanks for all the information do you share. Your page is the best of all I have been searching for months about corrosion. My question: Do you have notice about previous cases about pitting of wires during the time the wires are stored in reels, the wire is alumoweld ACS (alumo clad steel)accordingly to IEC61232 20SA, wire is 3.3 mm diam, aluminum clad thickness 10% of radius. Reels made of wood, no protection in core of reel, neither flanges, on top of layers a simple wrap of waxed paper. 2 m diam, Storage conditions: outdoors, clima hot, humid, rain, tropical, near sea shore. 12 months. I hope some one could share previous information. Roberto rguerra101@yahoo.com