INVESTIGATION AND EVALUATION OF HIGH STRENGTH STEELS IN HEAVY GAUGES FOR LARGE DIAMETER SOLID PROPELLANT ROCKET ENGINE CASES

Abstract

This research program includes the examination of candidate high strength steels (AMS 6434, D6AC, and Maraging 18% Nickel Steel) to determine the best candidate steel for use in large diameter solid propellant booster cases. Included are mechanical and physical properties, fabrication techniques, and tentative specifications and procedures for construction by the rolled and welded method of construction. Specific requirements are the examination of plate and forgings 3/8 in. to 2 in. thick to determine mechanical and physical properties of the candidate materials welded and unwelded. Further, fabrications processes examined are forming, welding, machining, drilling and tappiog, sawing burning, and heat treating. The results indicate that 250 Ksi Maraging Nickel Steel appears to be the best candidate. This is based on the basis of mechanical strength, Gc values, weldability, and the case with which this material can be aged to the strength levels required.

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Document Details

Document Type
Technical Report
Publication Date
Feb 28, 1963
Accession Number
AD0424490

Tags

Communities of Interest

  • Advanced Electronics
  • Weapons Technologies

DTIC Thesaurus Topics

  • Charpy Impact Tests
  • Chemical Synthesis
  • Chemistry
  • Combustion
  • Fabrication
  • Heat Treatment
  • Impact Tests
  • Inert Gas Welding
  • Joints
  • Mechanical Properties
  • Physical Properties
  • Reduction Of Area
  • Rocket Engines
  • Tensile Properties
  • Tensile Strength
  • Test And Evaluation
  • Welds

Fields of Study

  • Materials science

Readers

  • Metallurgy
  • Rocket Propulsion.