Effect of Tempering Treatment upon Physical Properties of Martensite Tempered to a Fixed Hardness

Abstract

Samples of martensitic SAE 1095 have been tempered to Rockwell C 30 and to Rockwell C 40 using tempering times of 5 minutes to 17 hours and corresponding temperatures. The tensile properties at each hardness were found to be the same for all tempering treatments. Samples of martensitic SAE 4140 were tempered to Rockwell C 22 1/2 using times of 15 minutes to 16 hours. V-notch Charpy impact properties at -195 deg C to + 20 deg C and tensile properties at room temperature were found to be essentially the same for all tempering treatments.

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Document Details

Document Type
Technical Report
Publication Date
Oct 19, 1945
Accession Number
ADA950682

Entities

People

  • J. H. Hollomon
  • L. D. Jaffe

Tags

Communities of Interest

  • Counter IED

DTIC Thesaurus Topics

  • Austenite
  • Brittleness
  • Diameters
  • Hardness
  • Martensite
  • Mechanical Properties
  • Munitions
  • Physical Properties
  • Standards
  • Steel
  • Tempering
  • Tensile Properties

Fields of Study

  • Materials science

Readers

  • Metallurgy