rexford Posted May 7, 2003 Share Posted May 7, 2003 A U.S. firing test report was presented in our book where 90mm HVAP was fired against 8" armor at Brinell Hardnesses from 223 (somewhat soft for armor) to 390 (somewhat hard). The firing test results suggest that early Tiger 82mm and 62mm side plates, and maybe the 102mm front hull, would gain in resistance against tungsten core ammo. Firing 90mm HVAP against vertical plate, the U.S. limit velocities were: 2530 feet per second for 223 Brinell 2640 feet per second for 260 Brinell 2660 feet per second for 390 Brinell 2800 feet per second for 339 Brinell The 339 Brinell armor would be about +9.4% more effective than 260 Brinell in terms of vertical equivalence against 90mm HVAP. 8" armor against 90mm HVAP has about the same ratio of armor thickness/core width as 82mm versus 45mm APCR. While one firing trial does not a universe make, and random variations in projectile performance could account for the differences, the results do suggest that early Tiger armor might possibly obtain a small boost against Russian APCR hits due to the unusual hardness (315 to 360 Brinell). 0 Quote Link to comment Share on other sites More sharing options...
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