NEW SOVIET HEAT-RESISTANT STEEL

Abstract

The article deals primarily with the effect of electroslag remelting (Hopkins process) on the content of nonmetallic inclusions and hot ductility of EI-847 steel. This steel contains 0.100.15% C, 14-17% Cr, 14-16% Ni, 2.5-3.5% Mo, 0.45-0.85% Nb, 0.8% (max) Si, 0.8% (max) Mn, 0.02% (max) S, and 0.03% (max) P. Its structure consists of austenite, Cr23C6 chromium carbide, niobium carbonitrides, and the intermetallic compound MoFe2. The austenite in EI-847 steel is distinguished by high stability; the austenitic structure is in no way changed by heat treatment or by cold working with considerable reduction. The fully annealed steel is not susceptible to intergranular corrosion even after prolonged (500-7000 hr) aging at 550-700 C.

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Document Details

Document Type
Technical Report
Publication Date
Mar 20, 1961
Accession Number
AD0254401

Entities

Organizations

  • Library of Congress

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Alloys
  • Austenite
  • Cold Working
  • Corrosion
  • Ductility
  • Government Procurement
  • Governments
  • Heat Treatment
  • Inclusions
  • Intermetallic Compounds
  • Materials
  • Materials Processing
  • Mechanical Working
  • Metals
  • Niobium
  • Steel

Fields of Study

  • Materials science

Readers

  • Metallurgy
  • Petroleum Engineering
  • Powder metallurgy of Titanium alloys.