a method for producing a rigid magnetic circuit component for an electromagnetically operable valve includes : a ) providing a base element made of a magnetic or a magnetizable material , b ) complete first heat treatment of the base element , c ) a local second heat treatment of the base element so as to form a subregion having a microstructure of martensite and residual austenite in the otherwise martensitic base element , and d ) installing the finished processed base element as the magnetic circuit component in a magnetic circuit .