How thick is modern MBT armor (DR 2000)?

[The_Ryujin]

Ok, just to give you some values...

Modern Titanium armors have a DR of around 55 and 60 per inch and weighs between 0.43 and 0.39lbs per ft^2 per point of DR.

RHA steel armor has DR 70 and weighs 0.58lbs per ft^2 per point of DR, the highest grade of modern, high hardness, steel has DR90 and weighs 0.45lbs per ft^2 per point of DR.

Earlier non-DU "chobham" used on the first generation of M1's has only DR 55 and weighs 0.4lbs per ft^2 per point of DR and is counted as laminate, DU insert "chobham" has a much higher DR/inch at 92 and weighs 0.3lbs per ft^2 per point of DR but should only be treated as spaced armor against shape-charges. The most modern generation used on the M1A1 SEP has DR 110 and weighs 0.25lbs per ft^2 per point of DR but should also only counted as spaced armor.

Sloping also effects armors DR, increasing it's effective thickness by (armors thickness/COS(angle of slope)) as well as increasing the likelihood that a round will just bounce off of it. For simplicity GURPS combines the increased thickness and chance of bouncing a round and assumes that an slope of 30° will increase effective DR by 1.5× and a 60° slope will increase it by 2×