As a photo chemical etching specialist for over 50 years, Precision Micro has developed etchant chemistries and processes that make etching possible on a wide range of metals. Stainless steel, however, remains the number one choice for many of the company’s customers due to its versatility, the numerous grades available, and the vast array of finishes. Precision Micro’s stock steel grades include austenitic (300) and ferritic martensitic (400) series, mild steel, electrical steel, maraging steel, high-carbon (spring) steel, precipitation hardened (17-4, 17.7) steel, and duplex and super duplex steel, as well as specialist grades including Sandvik Chromflex strip steels and Uddeholmstrip flapper valve steel. Chemical etching produces precision components by selectively removing metal through a photo-resist mask. When compared with conventional sheet metalworking, it has a number of inherent advantages, key among which are its ability to produce parts without degrading material properties – no force or heat is used during processing – and almost limitless part complexity as component features are removed simultaneously using etchant chemistries. The tooling for etching is d...