ALCOA 2026 (Aluminum Extrusion Alloy)

摘要

Alcoa extrusion alloy 2026 was developed as an improvement over 2024 and 2224 extrusions in aerospace structural applications where the governing selection criteria are high damage tolerance, good fatigue resistance, and a high degree of manufacturability. The improved resistance to fatigue crack propagation and higher toughness of alloy 2026 permit increased intervals between inspections and improved residual strength. In addition to improved damage tolerance, extrusion alloy 2026-T3511 also has a significantly higher A-basis minimum strength than 2024-T3511 and 2224-T3511. (See Alloy Digest Al-395.)