Abstract: The invention relates to a method for producing a longlife, resistant spark plug for internal combustion engines. The electrode (16), according to the invention, of the spark plug is assembled from a plurality of initial parts: an initial part for a corrosion-resistant shell (31'), an initial part for a core (33') of high thermal conductivity, and an initial part for an erosion-resistant region (32'). These initial parts are jointly impact-extruded to form an electrode blank which is formed into the center electrode (16) by machining its head (51) and its region on the combustion-chamber side. Electrodes which are especially highly stressed are given a fourth initial part, which is also to be impact-extruded, consists of highly erosion-resistant material and is still arranged on the combustion-chamber side in front of the erosion-resistant region (32'). The electrode (16) can be used as a center electrode (16), but can also be used, if necessary, as an earth electrode after an embossing and bending process.