The Estimation of Yield Strength from Hardness Measurements

Abstract

Data are presented to show that the yield strength of gun steel and AISI 4340 alloy can be estimated from Rockwell hardness measurements. The expression, YS = 4.226(R sub c), where YS is the 0.1% offset yield strength in ksi and (R sub c) is the Rockwell C hardness of the material, was developed statistically to fit the data. It is shown that the yield strength within a gun tube forging can be estimated from the hardness measurements taken on a small flat area ground on the OD of the gun tube.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1975
Accession Number
ADA016166

Entities

People

  • Richard S. Defries

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Alloys
  • Chemical Composition
  • Coefficients
  • Guns
  • Hardness
  • Low Alloy Steels
  • Materials
  • Measurement
  • Mechanical Properties
  • Metals
  • New York
  • Regression Analysis
  • Security
  • Steel
  • Strain Hardening
  • Yield Strength

Readers

  • Metallurgy
  • Regression Analysis.
  • ballistics.