Annealing refers to the process of heating a metal workpiece to a certain temperature, holding it for a period of time, and then cooling it slowly. Annealing can reduce internal stresses in the material, improve the crystal structure of the material, enhance the material's ductility and malleability, and adjust the hardness of the material by controlling the temperature and time during the heating and cooling processes. This process represents the annealing of 1kg of steel, with asphalt as the cooling medium, resulting in 0.969kg of annealed steel. This process should be used in conjunction with production data for 1kg of steel. The dataset is formed by aggregating data from multiple sources.