Metallurgical Examination of Two 1/4 Inch, Two 3/8 Inch, and Twenty-One 1/2 Inch Rolled Homogeneous Armor Plates Manufactured by Great Lakes Steel Corporation

摘要

Metallurgical examination, including Brinell hardness surveys, fracture test for steel soundness, and macroetch tests was conducted on each of the twenty-five plates furnished by Great Lakes Steel Corporation. Microscopic examination was made on four plates. All plates except 7A were satisfactory with respect to steel soundness.