Steel name: API X80
  Diagram No.: 3538
  Type of diagram: CCT
  Chemical composition in weight %: 0.08% C, 0.25% Si, 1.70% Mn, 0.002% S, 0.029% P,
  0.17% Ni, 0.029% Al, 0.00% Mo, 0.033% Nb, 0.0024% B, 0.026% Ti, 0.0048% N.
  Note: Low carbon HSLA bainitic steel. CCT diagram of an HSLA bainitic steel subjected to
  multiple steps of torsional deformation at various temperatures prior to cooling for
  austenite transformation.
  Source: A.B. Cota, P.J. Modenesi, R. Barbosa and D.B. Santos, "Determination of CCT
  diagrams by thermal analysis of an HSLA bainitic steel submitted to thermomechanical
  treatment", Scripta Materialia, Vol. 40, No. 2, pp. 165–169, 1999.

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