Electropolishing and Passivation
Modern Grinding offers passivation and electropolishing of stainless steel wires. In the presence of oxygen, passivation is self repairing which is why after passivation, your wire will remain bright and shiny for a long time.
Electropolishing is an electrochemical process which brightens a steel surface by selective dissolution of the high points. Metal is removed from the surface producing a unidirectional pattern that is both stress and occlusion free.
Passivation is the use of a light coat such as metal oxide which is used to create a shell to protect the wire against corrosion. This process removes any free-iron from the surface of stainless steel while creating the passive chromium oxide layer.
Modern Grinding has provided wire passivation and electropolishing for guidewires, k-wires, core wires, coils, mandrels, steinmann pins, and stylets.
Below is a good breakdown of Electropolishing vs. Passivation
Additionally, Modern Grinding works with Classic Electropolishing for outsourced electropolishing.