Aerospace series - Steel FE-PL1507 (40CrMoV12) - Air melted - Annealed - Forging stock - a or D < 350 mm

This technical specification establishes comprehensive requirements for vacuum melted and annealed bar原材料 made from (40CrMoV12) steel, specifically designed for applications within the aerospace sector. The document outlines precise material properties, dimensional tolerances, and quality assurance protocols essential for manufacturing components with a diameter or thickness up to 350 millimeters. It details the metallurgical processes required to ensure the steel achieves the necessary mechanical strength and chemical composition consistency. The guidelines address the specific heat treatment procedures, including the annealing phases, to optimize the microstructure for subsequent machining or fabrication. Strict adherence to these criteria ensures the final products meet the rigorous safety and performance standards inherent to aviation and space engineering environments. The scope covers the delivery conditions for raw materials, specifying surface finish and internal cleanliness standards to prevent defects during component production. Compliance with these parameters facilitates interoperability and reliability in critical aerospace systems where material failure is not an option.