Steel name: 81B40
  Diagram No.: 1491
  Type of diagram: TTT
  AISI: 81B40
  Chemical composition in weight %: 0.43% C, 1.02% Mn, 0.31% Ni, 0.48% Cr,
  0.13% Mo, 0.0009% B.
  Note: Structural steel. Austenitizing temperature: 843 ^oC (1550 ^oF).
  Grain size: 7.
  Source: Atlas of Isothermal Transformation Diagrams, United States Steel
  Corporation, 1961, Fourth Edition, Pittsburgh, PA, USA.

  Price: 25.00 US $
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