Will flash rusting or brown spots occur on Wearlon coated cold rolled steel?
If sandblasted, cold rolled steel when left in storage for any period of time, a flash-rust additive should be applied before coating. The preferred flash-rust additive, Flash Shield Rust Inhibitor 104-K, can be supplied by Plastic Maritime or purchased from UltraChem LLC (phone 713-641-4245). If purchased from UltraChem, it should be cut 30:1 with water. It will delay flash rusting for 3 to 5 days. It is specifically formulated so that Wearlon coatings can be applied directly over it without loss of adhesion. Pre-heating of sandblasted steel to approximately 120° – 140° F.
