Steel name: 4140
  Diagram No.: 1510
  Type of diagram: TTT
  AISI: 4140
  Chemical composition in weight %: 0.37% C, 0.77% Mn, 0.98% Cr, 0.21% Mo.
  Note: Structural steel.
  Austenitizing temperature: Grain size: 2-3, black lines, 1093 ^oC (2000 ^oF).
  Austenitizing temperature: Grian size: 7-8, grey lines, 843 ^oC (1550 ^oF).
  Source: Atlas of Isothermal Transformation Diagrams, United States Steel
  Corporation, 1961, Fourth Edition, Pittsburgh, PA, USA.

  Price: 25.00 US $
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