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Yes It is an ablative coating

I have an antifouling coating (cuprous oxide) over an epoxy base on a steel vessel. The AF was applied about 18 months ago. When the boat was pulled out of the water recently, most of the AF was gone (It was to be a 7-10 year system) and the AF is as hard as a rock, not soft as usual. Tried...

Trying to quickly find the weight per sq. ft. of T-111 paneling. I lost a chimney during hurricane Jeanne. The chimney is frame construction, 36" x 36" square by 17 feet tall, with the smoke pipe running up the center. Not counting the framing it is all T-111 paneling. The chimney is in fine...

Try MIL-PRF-24712A. The QPL was cancelled, so I don't know if any products qualify to the MIL-SPEC

Ken provided the best web sites for your questions. With respect to the Inspector quals for Critical Coated Systems (of which the underwater hull is considered) refer to NSTM Ch 631, Para 11.6 for Coating Inspector Requirements. The inspector only needs to be NACE Level I or NAVSEA Basic Paint...

Thanks for the info. I had checked the bend radius of our plates, before I read your posts and found they used a 1/2" bend radius. To me this to one of the reasons for the problem. Although I read in Alum Const Manual that 90 degree bend radius for 5456 H321 is 3t-4t or a minimum of...

We are receiving portions of an aluminum 5456-H116 plate (4.00" wide x 0.250") that has been pressed to form a Vee shape of 110 degrees. On the external side, where the bending is we are seeing small longitudinal cracks. the engineer from the company providing the plating says this...