The invention relates to a method for producing a clockspring for a clockwork movement.

The invention relates to a method for producing a spiral spring for equipping a pendulum of a clockwork movement. comprising: a step of forming a blank in a niobium and hafnium alloy comprising between 5 and 60% by weight, preferably between 5 and 30%, and more preferably between 8 and 12% by weight of hafnium, a step of annealing and cooling the blank, at least one step of deforming the annealed blank to form a wire, characterized by comprising, prior to the deforming step, a step of depositing, on the blank, a layer of a ductile material selected from the group consisting of copper, nickel, cupro-nickel, cupromanganese, gold, silver, nickel-phosphorus Ni-P and nickel-boron Ni-B. to facilitate shaping in the form of a wire. The present invention also relates to the spiral spring from the manufacturing process.