Steel name: 0.0021C-0.25Nb Steel
  Diagram No.: 3639
  Type of diagram: CCT
  Chemical composition in weight %: 0.0021% C, 0.014% Si, 0.23% Mn, 0.0052% S,
  0.010% P, 0.038% Al, 0.25% Nb, 0.0022% N.
  Note: Ultra low carbon steel. Austenitized at 1050^oC. See the diagram No. 3640.
  Source: M. Suehiro, Z.K. Liu and J. Agren, "Effect of Niobium on Massive Transformation
  in Ultra Low Carbon Steels: A Solute Drag Treatment", Acta mater., Vol. 44, No.10,
  pp.4241-1251, 1996.

  Price: 30.00 US $
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