Steel name: 2.5% Ni-Cr-Mo Medium Carbon Steel
  Diagram No.: 1578
  Type of diagram: TTT
  B.S.: En 25
  Chemical composition in weight %: 0.32% C, 0.27% Si, 0.56% Mn, 0.012% S, 0.018% P,
  2.37% Ni, 0.74% Cr, 0.51% Mo.
  Note: Structural steel, medium carbon steel. Austenitizing temperature: 835 ^oC.
  As quenched grain size: 7 & 8.
  McQuaid grain size: 3-4.
  Hardness values in bold figures are shown of the fully transformed steel; the values in
  italics represent structures developed by holding at the selected temperatures for 24
  hours and then quenching to room temperature.
  Source: George F. Vander Voort, Atlas of Time-Temperature Diagrams for Irons and
  Steels, ASM International, USA, 1991, p.87.

  Price: 25.00 US $
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