Redheat is a term often used in the field of metallurgy to describe a specific temperature range at which a heated metal glow is visible. More specifically, redheat refers to the stage when a metal, usually steel or iron, is heated to a sufficiently high temperature causing it to emit a faint, reddish glow. This temperature range typically falls between 600 and 800 degrees Celsius (1112-1472 degrees Fahrenheit).
The redheat stage is a crucial step in various metalworking processes, such as forging, annealing, and tempering. It is an indicator to the practitioner that the metal has reached a specific temperature threshold necessary for performing certain operations. Redheating metal allows it to become more malleable and ductile, making it easier to shape, bend, or reshape to the desired form. Additionally, redheating plays a crucial role in relieving internal stresses within the metal, enhancing its structural integrity and making it less prone to cracking or failure.
In non-metallurgical contexts, redheat can also refer to the color of an object, particularly when heated to a high temperature. For instance, in metalsmithing or blacksmithing, the term may describe the vibrant reddish hue that iron or steel exhibits when heated to a specific temperature for aesthetic purposes.
Overall, redheat is a term used to signify the specific temperature range at which a heated metal emits a faint, reddish glow, indicating its suitability for various metalworking processes.
