Beryllium Copper is a material often specified for springs for several reasons: It is precipitation hardenable (which means it can be heat treated after bending to make it very springy) and it is a good electrical conductor. This metal is a potential hazard to work with because it’s dust is toxic but not for Chemical Etching. We dissolve the metal into a chemical solution – no dust, no hazard. A large number of electrical contacts are manufactured from BeCu by Fotofab safely, inexpensively and quickly.
Chemically etched flat springs work as diaphragm springs used in fuel systems of airplanes- these must be failure free for reasons I’m sure you can imagine. Fotofab has delivered them, on-time, for more than 30 years.
Flapper valves used in compressors and vacuum pumps are manufactured from some of the hardest stainless steels available. These steels cannot be cut with conventional cutting tools but dissolving them with our etchant is what we do. Fotofab has manufactured millions of flapper valves over the decades and most of them are likely still in service.
Our formed springs are used anywhere where formed springs are needed.