Steel name: 8640 & 8740
  Diagram No.: 2422
  Type of diagram: TTT
  AISI: 8640 & 8740
  Chemical composition in weight %: 0.42% C, 0.89% Mn, 0.80% Si, 0.018% P, 0.015% S
  0.58% Ni, 0.52% Cr, 0.24% Mo.
  Note: Structural steel. Austenitizing temperature: 900 ^oC (1650 ^oF). Grain size: 8-9.
  Source: Battelle Memorial Institute for Inco, USA.

  Price: 25.00 US $
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