Annealing refers to a heat treatment process in which a metal workpiece is heated to a specific temperature, held for a certain period, and then slowly cooled. Annealing reduces internal stresses, improves the crystalline structure of the material, enhances its ductility and malleability, and allows adjustment of the material's hardness through controlling temperature and time during heating and cooling. This process represents the annealing of 1 kg of steel, with asphalt as the cooling medium, resulting in 0.969 kg of annealed steel. This process should be used in conjunction with the production data for 1 kg of steel. The dataset is compiled from data sourced from multiple origins.