Aluminum 2024 T4 Vs T351. General 2024 characteristics and uses (from alcoa):. Aluminum 2024 is one of the highest strength 2xxx alloys, the copper and magnesium are the main elements in this alloy.
I believe t4 has been replaced by t351 but when i ordered t3 bar stock from wicks, they sent t351. Applications | specifications | related videos | mechanical and chemical data | tolerances.