Steel name: 0.39C-0.62Si-1.30Mn-0.11V
  Diagram No.: 4036
  Type of diagram: CCT
  Chemical composition in weight %: 0.39% C, 0.62% Si, 1.30% Mn, 0.016% P, 0.013% S, 0.11% V,
  0.025% Al.
  Note: Medium carbon vanadium microalloyed steel. Microstructures observed after cooling to room
  temperature, and Continuous Cooling Transformation diagram determined by dilatometry. Start and finish
  transformation temperatures, under the continuous cooling conditions determined by dilatometry tests,
  are illustrated in the CCT diagram plotted in Fig. bellow. The hardness andmicrostructures observed
  after cooling to room temperature at each cooling rate applied are also displayed in this figure. These
  data indicate that, at low cooling rates of less than 2 °C/s, the microstructure is composed of
  pro-eutectoid ferrite and pearlite.On the other hand, bainite is formed at cooling rates ranging from
  5 °C/s to 10 °C/s, while martensite is observed at the highest cooling rates .
  Source: N.J. Lourenço, A.M. Jorge Jr., J.M.A. Rollo, O. Balancina, Plastic Behavior of Medium Carbon
  Vanadium Microalloyed Steel at Temperatures Near Gamma-Alpha Transformation, Materials Research,
  Vol. 4, No. 3, 149-156, 2001.

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