Accession Number:

ADA516824

Title:

Development and Ballistic Testing of a New Class of Auto-Tempered High-Hard Steels Under Military Specification MIL-DTL-46100E

Descriptive Note:

Final rept. Feb 2008-Feb 2009

Corporate Author:

ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD WEAPONS AND MATERIALS RESEARCH DIRECTORATE

Personal Author(s):

• Showalter, Dwight
• Gooch, William
• Burkins, Matthew
• Montgomery, Jonathan
• Squillacioti, Richard

Report Date:

2009-09-01

Pagination or Media Count:

36.0

Abstract:

The U.S. Army Research Laboratory ARL was directed to investigate various ways to expand current steel armor plate production as the large military demand for armor plate exceeded the current production capacity at U.S. steel facilities for quench and tempered high-hard armor HHA steel plate. The solution was to expand the availability of HHA steels under the current HHA military specification MIL-DTL-46100 to include a new class of air-quenched, auto-tempered steels that do not use existing water quench and temper facilities. Allegheny Technologies Incorporated ATI developed an auto-tempered steel alloy, ATI 500-MIL trademark of ATI Properties, Inc., that has physical and mechanical properties that meet the current HHA specification. ARL procured sufficient amounts of ATI 500-MIL plate to allow acceptance testing and subsequent certification of ATI 500-MIL plate as complying with the First Article requirements of the newly revised MIL-DTL-46100E specification. This report documents the development of ATI 500-MIL plate and subsequent ballistic testing and inclusion into the specification as Class-2 auto-tempered HHA steel.

Descriptors:

• *STEEL
• MECHANICAL PROPERTIES
• ARMY RESEARCH
• PRODUCTION
• CAPACITY(QUANTITY)
• ARMOR PLATE
• PHYSICAL PROPERTIES
• METAL PLATES
• BALLISTICS
• TEST AND EVALUATION
• SPECIFICATIONS

Subject Categories:

• Metallurgy and Metallography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE