Tempering is the correct terminology. Annealing is a slow and controlled heating, gradually reducing the heat over time. from Wikipedia: "Tempering [...] is d

Tempering is the correct terminology. Annealing is a slow and controlled heating, gradually reducing the heat over time. from Wikipedia: "Tempering [...] is done by heating the metal to some temperature below the critical point for a certain period of time, then allowing it to cool in still air." Here's a good description https://www.metalsupermarkets.com/difference-annealing-tempering/ https://www.metalsupermarkets.com/difference-annealing-tempe...