Steel name: 0.21% C-V-N
  Diagram No.: 2176
  Type of diagram: CCT
  Chemical composition in weight %: 0.21% C, 1.52% Mn, 0.40% Si, 0.023% S, 0.022% P,
  0.07% Ni, 0.13% V, 0.04% Al, 0.019% N
  Steel group: Structural steel, vanadium steel
  Note: 1.) Austenitizing temperature: 900^oC, holding time: 5 minutes. 2.) Reheated to 1300^oC
  Source: Atlas zur Warmebehandlung der Stahle, Max-Plank Institut fur Eisenforschung, 1958, II-332E,
  p. 268, as published in Atlas of Continuous Cooling Transformation Diagrams for Vanadium
  Steels, Vanitec, England, June 1985

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