Resistance Welding of Armor Study of Ballistic Properties and Hardnesses of 1/4 Inch Face Hardened and 1/4 Inch Rolled Homogeneous Armor Plate Spot Welded by Progressive Welder Co.
WATERTOWN ARSENAL LABS MA WATERTOWN ARSENAL United States
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This 1942 report concludes that 1 The ballistic limits obtained with .30 Cal. A.P. M2 ammunition from 14 In. face-hardened armor spot welded with the method used by the Progressive Welder Co. are satisfactory and 2 The method of spot welding as used by the Progressive Welder Co. on joints in 14 in. face-hardened armor does not adversely affect the hardness of the carburized face.