IMPACT PROPERTIES OF AIR- AND VACUUM-MELTED AISI 4340 STEEL.

Abstract

Several commercial heats of air- and vacuum-melted AISI 4340 steel were investigated to determine their mechanical properties. Data were derived from Charpy impact tests and tensile tests. The effect of decreasing phosphorous and sulfur content is correlated with changes in impact energy at 100 percent fibrous fracture, mechanical anisotropy, and tensile properties. It is concluded that by reducing the phosphorous plus sulfur content to a maximum compositional limit of 0.020 weight percent, significant improvement in material toughness results and the degree of anisotropy is reduced. (Author)

Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1965
Accession Number
AD0622782

Entities

People

  • Frank R. Larson
  • George E. Gazza

Organizations

  • United States Army Research Laboratory

Tags

DTIC Thesaurus Topics

  • Anisotropy
  • Charpy Impact Tests
  • Dynamic Tests
  • Impact Tests
  • Materials
  • Mechanical Properties
  • Physical Properties
  • Tensile Properties
  • Toughness

Fields of Study

  • Materials science

Readers

  • Materials Science (Mechanical Engineering).
  • Petroleum Engineering