Brass melt temp refers to the specific temperature at which brass, an alloy primarily composed of copper and zinc, undergoes a phase change from a solid to a liquid state. The melting point of brass varies depending on its composition, with common brass alloys melting between 800 to 1000 degrees Celsius. Understanding the melt temperature is crucial in brass casting, as it determines the equipment and techniques required to successfully melt and pour the metal into molds.