War Thunder Armor Penetration Guide
Penetration as a concept: thickness, angle, distance, and shell type — no invented stat cards.
Penetration is the ability of a projectile to get through armor along a shot line. Distance, angle, and shell type all matter. Published mm figures change with patches; use the hangar, not a blog table we would have to invent.
Distance
Kinetic rounds usually lose penetration with range. Chemical rounds behave differently. That is why Range and Distance in vanilla play still matter even if a cheat overlay prints a number.
Angle
Ricochets and reduced effective penetration appear on steep slopes. See armor basics. Overlay Distance is not a penetration calculator.