An experimental study on the ballistic performance of ultra-high hardness armor steel (Armox 600T) against 7.62 mm × 51 M61 AP projectile in the multi-hit condition

In this study, Armox 600T armor steel was ballistically tested against 7.62 mm × 51 M61 AP projectile. The experimental design was constructed on the basis of the worst-case scenario which is the highest possible impact velocity in the multi-hit condition. The ballistic tests revealed that Armox 600T could defeat the worst-case scenario with a thickness of 12 mm. Furthermore, the damaged and undamaged regions were inspected microstructurally in a detail manner aiming to observe the possible fractographic modes of the studied material. Finally, high resolution optical scanning efforts were also added to the experimental work whose results uncovers the possible improvement areas regarding the quantification of the results of ballistic testing.