Aerospace series - Steel X7CrNiAl17-7 (1.4568) - Air melted - Solution treated and precipitation hardened - Sheet and strip - a ≤ 6 mm - 1 240 MPa ≤ Rm ≤ 1 450 MPa

This technical specification defines the requirements for flat products made from X7CrNiAl17-7 (1.4568) steel, processed through air melting, solution treatment, and precipitation hardening. The standard specifically applies to sheets and strips with a thickness of 6 mm or less, where the tensile strength ranges between 1240 MPa and 1450 MPa. It establishes the material grades, chemical composition limits, mechanical property thresholds, and dimensional tolerances necessary for aerospace applications involving high-strength nickel-aluminum alloys. The document outlines testing procedures to verify the material's hardness, ductility, and resistance to environmental factors during service. It ensures that manufacturers produce consistent quality components suitable for structural components in aviation and space systems. Compliance with these guidelines facilitates international trade by harmonizing material specifications across different regulatory environments. The text provides detailed instructions on heat treatment cycles and surface finish requirements to meet the rigorous demands of the aerospace industry. This document serves as a reference for engineering design and quality control processes within the manufacturing sector.