Metallurgical Examination of Fourteen 5/16 Inch Rolled Homogeneous Armor Plates Manufactured by Great Lakes Steel Corporation
WATERTOWN ARSENAL LABS MA WATERTOWN ARSENAL United States
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Metallurgical examination, including Brinell hardness surveys, fracture tests for steel soundness and fibre, and macroetch tests was conducted on each of the fourteen plates furnished by Great Lakes Steel Corporation. Microscopic examination was made on six plates and chemical analyses were taken of two. All plates except two were fibrous. Plates 17 and 19 revealed traces of crystallinity at hardnesses of 388 and 375 respectively.