Magnetic annealing is a heat treatment process that consists in the recrystallisation of a material and the removal of any trace of work hardening.
ECM Lab Solutions offers several vacuum furnaces adapted to magnetic annealing applications
Hydrogen is the best atmosphere for magnetic annealing.
The control of the soak temperature, soak time, cooling rate & furnace atmosphere is essential to reach the optimum soft magnetic properties.
With the right atmosphere even low carbon steels can see some benefit from the process. However improvements would be limited.