Photo 6 is a housing manufactured from Delphi K-Alloy. This casting was exposed to the same 30-day salt spray cycle as above. Pronounced deterioration of the screw fasteners is evident from the white ring around the contact point on the casting. The casting itself did not show signs of corrosion.
Photo 7 is the same K-Alloy casting as Photo 6 with the top lid removed. The sealed surface was still intact and showed no sign of water intrusion. The housing showed no sign of surface corrosion.
Photo 8 is the same K-Alloy casting as Photo 6 after is had been lightly blasted with glass beads to remove salt residue and dispensed adhesive material on the sealing surface. The casting shows no visual damage from corrosion or metal loss due to salt spray reaction.