Nickel Chrome Plating Fogginess: Clear Causes and Fixes

Summary for nickel chrome plating fogginess Discussion

Nickel chrome plating fogginess is not necessarily controlled by the chrome bath alone. Casey Lee asked why two suppliers plating 17-4 stainless produced parts with different shine levels and wondered whether chrome brightener concentration or boric acid level was responsible. Sara Michaeli suggested first stripping the chromium in 1:1 hydrochloric acid, rinsing, and drying; if the parts are no longer foggy, the issue is in the chromium layer rather than the nickel. David added that plating thickness matters: if trivalent chromium is very thin compared with the nickel, the nickel deposit should dominate the appearance, and nickel brightness depends on additive chemistry such as grain refiners and levelers. The thread therefore points to both the nickel and chromium processes as possible contributors, with the diagnostic strip test helping identify which layer is causing the dullness.