Q: We would like to purchase Duplex parts. Can you xylan coat and Zinc nickel Electroplate them since they will be used in sea water?
A: It is not practical to coat a Duplex 2507 bolt as it is stainless steel and will not corrode in seawater. Duplex will provide great resistance to saltwater, salt air, chloride corrosion, oxidation, and stress corrosion caused by sulphides. These coatings are usually best applied to carbon steel that will corrode rapidly in air and water.