Accession Number : ADA954380

Title :   Metallurgical Examination of German Aircraft Armor.

Corporate Author : WATERTOWN ARSENAL MA

Personal Author(s) : Reed,E. L.

Report Date : 28 JUL 1941

Pagination or Media Count : 18

Abstract : The purpose of this investigation was to determine the metallurgical characteristics of a sample of armor plate taken from a captured German airplane, model JU88. The material is homogeneous plate containing: C, .415; Mn, .58; P, .010; S, .026; Si, .30; Ni, 2.48; Cr, 2.41; Mo, .64; V, nil; W, nil. The Brinell hardness of the face was 555 and the back, 555. Marco and microscopic examination indicated that the material was rather uniform throughout. The plate was rolled from a fairly clean heat of steel. The ballistic limit of the plate was 2356 f/s, Cal. .30 A.P. but was too brittle to qualify under the existing specifications.

Descriptors :   ARMOR PLATE, BALLISTICS, HEAT, LIMITATIONS, METALLURGY, STEEL

Subject Categories : Metallurgy and Metallography
      Ballistics

Distribution Statement : APPROVED FOR PUBLIC RELEASE