Steel name: 2-1/4CrlMo
  Diagram No.: 3659
  Type of diagram: TTT
  Chemical composition in weight %: 0.15% C, 0.50% Mn, 2.12% Cr, 0.90% Mo, 0.17% Ni.
  Note: Tool steel. Predicted TTT diagram for a 2-1/4CrlMo steel. Also plotted are lines
  corresponding to when the phase was first observed by Baker and Nutting (1959).
  Source: J. D. Robson and H. K. D. H. Bhadeshia, Kinetics of precipitation in power plant
  steels, University of Cambridge, Presented at CALPHAD XXV, Erice, Sicily, Italy, May 1996,
  Calphad Vol. 20, NO. 4. pp. 447460, 1996.

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