Lower Cost by Substituting Steel for Titanium. AF1410 Steel-Detail Design and Development Tests.

Abstract

Two selected components of the B-1 structure presently designed as Ti 6AL-4V were redesigned using AF1410 steel taking full advantage of the higher strength and lower volume aspects. Both cost and weight savings are documented to show representative possibilities on similar parts of other aircraft structures. A cost saving of 22.9 and 22.1 percent and weight saving of 7.6 and 15.1 percent are projected in the two examples designed. Mechanical properties of AF1410 steel are validated through over 400 development tests run on production heats of this material. Tests covered parent metal properties and weld properties obtained from both static and fatigue tests. A special pre-machining heat-treatment was developed to permit lower cost machining prior to final heat-treatment for high strength properties. Both heat-treat processes were selected from a series of heat-treat tests conducted.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1977
Accession Number
ADA046705

Entities

People

  • W. E. Routh

Tags

Communities of Interest

  • Air Platforms
  • Space

DTIC Thesaurus Topics

  • Aircrafts
  • Chemistry
  • Fabrication
  • Failure Mode And Effect Analysis
  • Ferrium
  • Fracture (Mechanics)
  • Manufacturing
  • Materials
  • Measurement
  • Mechanical Properties
  • Mechanical Working
  • Mechanics
  • Scalar Magnetometers
  • Stress Corrosion
  • Tensile Properties
  • Tensile Strength
  • Welded Joints

Fields of Study

  • Materials science

Readers

  • Life Cycle Cost Analysis
  • Metallurgy