Steel name: 4137/4140
  Diagram No.: 1462
  Type of diagram: TTT
  AISI: 4137/4140
  Chemical composition in weight %: 0.37% C, 0.77% Mn, 0.98% Cr,
  0.21% Mo.
  Note: Structural steel. Austenitizing temperature: 843 ^oC (1550 ^oF).
  Grain size: 7-8.
  Source: Atlas of Isothermal Transformation Diagrams, United States Steel
  Corporation, 1961, Fourth Edition, Pittsburgh, PA, USA.

  Price: 25.00 US $
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