Steel name: 0.3C-1Mn-4Cr-0.3V-1Mn
  Diagram No.: 3989
  Type of diagram: TTT
  Chemical composition in weight %: 0.28% C, 1.00% Mn, 4.20% Cr, 0.34% V, 1.10% Mo, 0.067% Al,
  0.0161% N, 0.031% P, 0.011% S.
  Note: Calculated TTT diagram. TTT diagrams have been predicted using a model based on the chemistry
  of the metal. These diagrams provide information regarding the beginning and end of transformation into
  stable and metastable phases. The calculated diagram for ESR1 steel is shown in bellow figure. From
  this figure, it can be seen that AC1b temperature is about 825°C and martensite start transformation
  (Ms) temperature is above 300°C. Fast cooling below Ms temperature should result in martensitic
  transformation. Relatively slower cooling may result in a mixture of bainite and martensite. The AC3
  temperature of this steel is expected to be about 975°C, similar to 15CDV6 steel.
  Source: S. K. MAITY, N. B. BALLAL2 and R. KAWALLA, Development of Ultrahigh Strength Steel by
  Electroslag Refining: Effect of Inoculation of Titanium on the Microstructures and Mechanical Properties,
  ISIJ International, Vol. 46 (2006), No. 9, pp. 1361–1370.

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