Current Density Electropolishing: Practical Guide for Stainless

Summary for current density electropolishing Discussion

Current density for H3PO4/H2SO4 electropolishing is the central issue in this thread: Tomer asks how to avoid dull or frosted low-current-density areas on 304/316 stainless parts, especially small wires, dense racks, and shadowed geometries, while still getting good results on flat parts. The question also asks for a practical current-density range for the phosphoric/sulfuric electrolyte, how to adjust CD for different shapes, how bath temperature at 60–70 °C affects the usable range, and whether there is a simple CD-plus-time rule for predictable metal removal. The excerpt provided contains only the question and no answer text, so no specific recommended range, temperature guidance, or removal formula can be attributed from the source. The main takeaway from the page excerpt is the need for geometry-specific current-density control rather than one fixed setting for all parts.