A term used to identify the material produced from a single melting operation. Different heats of the same material can vary in chemical composition within prescribed limits. StockThe material to be forged regardless of form. Also, an individual piece of metal used to produce a single forging. from a single heatAmount of forging stock placed in a batch-type furnace at one time. will have a consistent analysis and more uniform properties. Also known in the U.K. as “Cast”.