The following are known Action Replay Codes for Iron Man on Nintendo DS (NDS).

Game ID: YIME-94FB288D

Infinite Shields
62136f50 00000000
b2136f50 00000000
dc000000 f7ffffb0
08000000 01194000
d2000000 00000000

Infinite Missiles
2211e08a 00000063

Press SELECT: Max Research Points
94000130 fffb0000
02141668 3b9ac9ff
d2000000 00000000