Steel name: 1 Cr
  Diagram No.: 2296
  Type of diagram: CCT
  BS designation: 1 Cr
  SAE designation: 5140
  Chemical composition in weight %: 0.39% C, 0.70% Mn, 0.20% Si, 0.020% P, 0.020% S,
  1.05% Cr.
  Note: Alloy steel. British steel. Austenitizing temperature: 870^oC (1598^oF).
  Grain size: 7-9.
  Source: M. Atkins, Atlas of Continuous Cooling Transformation Diagrams for Engineering
  Steels, ASM, 1980.

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