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In Reply to: RE: Armor to stop bullets posted by pictureguy on July 27, 2015 at 22:26:34:
Yeah. Rough rule of thumb. Not counting modern composite, sloping armor seen in many tanks and other armored vehicles.
For instance, the Panzer III MBT originally had 30mm frontal armor. Basically, to combat 20-30mm guns of the time (1939-40). By early 1941, they up-rated the frontal armor to 50mm. To combat 37mm and 50mm AT rounds they faced in Western Europe.
In summer 1941 (Barbarossa), the PzIII met up with heavier Russian armor bearing the 76mm main gun. They once again, uprated the armor to 57mm with stand-off plates. By mid 1942, the Germans started pulling the PzIII from frontlines, due to inability to up-armor and up-gun, anymore.
The relative armor thickness is amazingly close to the round diameter, even today. The Abrahms tank has 110mm sloping, composite armor to combat AT sabot rounds from a 120mm Russian smooth bore.
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Follow Ups
- Just a rule-of-thumb - FenderLover 02:59:06 07/28/15 (1)
- RE: Just a rule-of-thumb - pictureguy 09:56:53 07/28/15 (0)