Accession Number:

ADA954952

Title:

Metallurgical Examination of a 3-1/4 in. Thick Armor Plate from a German PzKw V (Panther) Tank

Descriptive Note:

Experimental rept.

Corporate Author:

WATERTOWN ARSENAL LABS MA

Personal Author(s):

Report Date:

1945-01-18

Pagination or Media Count:

11.0

Abstract:

The object of this study is to make a metallurgical examination of a 3-14 in. armor section from the front of a German PzKw V Panther tank. The 3- 14 in. thick plate was made from an aluminum-killed .50 carbon 2. chromium, . 14 vanadium steel heat treated to a hardness of 262-269 Brinell. Typical of most German armor which has been examined, it was found to be very sound cross- rolled steel. However it exhibited extremely low toughness as indicated by the fracture and Charpy tests making it susceptible to shattering under a shock type ballistic test. The inferior toughness was attributed to a combination of incomplete transformation to martensite upon quenching and temper embrittlement, the latter being readily eliminated without changing the hardness by retempering at 1200 F. followed by a water quench.

Subject Categories:

  • Metallurgy and Metallography
  • Ballistics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE