Summary of Analysis Comparing Homogeneous Rolled and Face-Hardened Armor Plate
ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD
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This report is concerned with available comparisons of homogeneous rolled and face-hardened armor plate, using Army ballistic limits as the medium for making comparisons. Assuming average quality projectiles were used in firings on which this report is based, face-hardened armor is quite superior to homogeneous rolled armor in defeating Cal. .30 AP M2 and Cal. .50 AP M2 projectiles and hence a substantial saving in weight of armor can be affected for these conditions by using face-hardened armor. There are also indications that face-hardened armor may be slightly superior to homogeneous rolled armor when comparisons are made with 20 mm AP M75 and M95 projectiles. In comparing face-hardened plate with homogeneous rolled plate for 37 mm APC M51, 57 mm APC M86, 3-in. APC M62, 90 mm AP M77, and 90 mm APC M82 projectiles, appropriate data for arriving at legitimate conclusions are scant, and hence tests designed specifically for this purpose may prove worthwhile.