Accession Number:

ADA954831

Title:

High Impact Strength Steels for Low Temperature Service

Descriptive Note:

Corporate Author:

WATERTOWN ARSENAL LABS MA

Personal Author(s):

Report Date:

1955-08-19

Pagination or Media Count:

17.0

Abstract:

To meet varied demands successfully, ordnance steels must possess high strength, the ability to withstand shock loading at reduced temperatures, and the ability to undergo some plastic deformation without initiation or propagation of brittle fracture. The latter characteristics may be lumped together under the general term toughness. It has been long recognized that steels having tempered martensitic microstructures have mechanical properties superior to those of steels having other microstructures. At a given tensile strength level, steels heat treated to a tempered martensitic structure possess the highest yield-tensile strength ratio, excellent ductility, highest fatigue resistance, and the maximum toughness under conditions involving shock loading and low temperatures. Effort has therefore been directed to the production of critical items of ordnance equipment from steels possessing these essential characteristics.

Subject Categories:

  • Properties of Metals and Alloys
  • Armor

Distribution Statement:

APPROVED FOR PUBLIC RELEASE