The ASTM A471/A471M-19(2024) specification provides the standard practice for vacuum degassed alloy steel forgings used in turbine rotor disks and impellers. This detailed document outlines critical requirements for material procurement, processing techniques, quality control measures, and acceptance criteria to ensure optimal performance and longevity of components utilized in high-stress applications within the aerospace and power generation industries. It includes stringent guidelines on chemical composition, mechanical properties, heat treatment procedures, non-destructive testing methods, and dimensional tolerances necessary to maintain structural integrity under extreme operating conditions.
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