1、Definition: The high-temperature alloy material of the parts directly prepared by the casting method.<br> 2、Type: According to the composition of the matrix, it can be divided into iron-based casting superalloys, nickel-based casting superalloys and drill-based casting superalloys. According to the crystallization method, it can be divided into four types: polycrystalline casting superalloy, directional solidification casting superalloy, directional eutectic casting superalloy and single crystal casting superalloy. Most of the cast superalloys are polycrystalline cast superalloys.<br> Application: Manufacturing aircraft engine blades, heat-resistant parts of fuel turbines, turbocharger blades, etc.<br>