TM 1-1500-204-23-6 Table 4-6.  Aluminum Alloy Types - CONT Commercial Current Superseded designation specification Composition Alloy Temper specification Castings - continued Die Castings QQ-A-591 1 13 AN-A-23 (Specify 2 A13 and Composition 3 43 AN-A-38 and Temper) 7 218 10 A380 11 380 12 360 12A A360 SC114A Forgings QQ-A-367 2014 T4 Heat-Treated 2017 T4 2018 T6 2025 T6 2218 T61 2618 T61 4032 T6 6061 T6 6066 T6 6151 T6 7075 T6 7076 T61 7079 T6 Commercial Current Superseded designation specification Conditions and types available Specification Seamless Tubing, Round, Square, Rectangular and Other Shapes 100 WW-T-700/1 O (Annealed) WW-T-700/1 B (2S) H12 (1/4-Hard) H14 (1/2-Hard) H16 (3/4-Hard) H18 (Hard) F (As Fabricated) 2024 WW-T-700/3 O WW-T-700/3B (23S) T3 T4 4-12