[sci.military] M1 armor

neil@progress.COM (Neil Galarneau) (02/12/91)

From: neil@progress.COM (Neil Galarneau)
>From: cbl@uihepa.hep.uiuc.edu (Chris Luchini)

>Also, how thick is the front armor on an m1? Someone told me 2 meters, that
>seems a little high.
>-c


The _Desert Shield Fact Book_ from GDW has this information (and a lot more -
a nice publication by the way).

Armor thickness is given in terms of equivalence to hard steel.  Sloping of
the armor and other things make it more effective than its actual thickness.

The Chobham armor is apparently very effective against HEAT rounds.

Tank     Equivalent  vs. HEAT
----     ----------  --------
M1       350 mm      750 mm  (~2400 produced)

M1A1 and 400 mm      1000 mm (~2400 produced)
IPM1

M1 with  600 mm      1300 mm (~2700 produced)
DU

T-72M    400 mm      400 mm  (< 10% of Iraqi tanks)

T-62 and 200 mm      200 mm  (Iraq has about 5000)
T-55

Weapon     Can penetrate
------     -------------
M1 APFSDS  650 mm

T72 HEAT   500 mm

AT-4       500 mm (HEAT)
Spigot

TOW-II     900 mm (HEAT)

Hellfire   1050 mm (HEAT?)

The IPM1 (Improved Performance M1) thickened the turret front armor.

The M1 with Depleted Uranium added a mesh of depleted Uranium to the Chobham
armor (also raising the weight of the tank from 55 to almost 65 tons).