This paper outlines the development of a dynamic simulation model of a continuous annealing line with commercially available simulation software. This model simulates the heat transfer aspects of the system with moderate fidelity and interacts with the currently installed programmable logic controller for control strategy testing and new steel product development. This paper documents the initial development and testing of the model for a particular continuous annealing line - the heat, soak, gas jet cool, quench, reheat, aging and fast cool stages.