Metallurgical Examination of Thirteen 1/2 Inch Rolled Homogeneous Armor Plates Manufactured by Great Lakes Steel Corporation.
WATERTOWN ARSENAL LABS MA
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Metallurgical examination, including Brinell hardness readings, fracture tests for steel soundness and fibre, and macroetch tests, was conducted on each of the thirteen plates furnished by the Great Lakes Steel Corporation. Microscopic examination was made on four plates from heat 9-14043 and a chemical analysis taken of one. All samples fractured in a fibrous manner. All plates were satisfactory with respect to steel soundness. Author