Heavy Wrought Armor Metallurgical Evaluation of Commercially Produced Heavy Wrought Armor to Improve the Specification Requirements

摘要

The object of this report is to obtain metallurgical information on heavy wrought homogeneous armor (4 to 12 thick) to justify and improve Army specification requirements for this class of armor and to determine the metallurgical properties of twelve samples of commercially produced heavy wrought (Navy Class B) armor. Metallurgical examination of twelve samples of Navy Class B armor ranging in thickness from 6 to 13-1/2 indicate that armor can be produced commercially which will comply with the requirements of U.S. Army Tentative Specification AXS-1803 Armor Plate: Steel, Wrought, Homogeneous (4 to 12 inclusive). It was found that one 7 plate, one 10-1/2 plate, and two 13-1/2 plates failed to meet the revised impact requirements of the Tentative Specification. The plates were not made for acceptance under the above specification. Heavy wrought homogeneous armor of the type manufactured for the Navy (Class B armor) is capable of meeting the requirements of the 1 December 1947 draft of the specification for Armor Plate: Steel, Wrought, Homogeneous (4 to 12 inclusive).