Steel name: SAE 3140
  Diagram No.: 2880
  Type of diagram: TTE
  SAE designation: 3140
  Chemical composition in weight %: No data.
  Note: Embrittlement diagram. Temper embrittlement. Time-temperature diagram for the
  segregation of phosporus in temper-embrittlement SAE 3140. The numbers next to the
  curves describe the degree of phosporus segregated during the embrittlemnt treatment
  (not including the 0.06 monolayers of phosporus segregated prior to the isothermal
  aging treatments). See the diagram No. 2879.
  Source: M.P. Seah, "Grain Boundary Segregation and the T-t Dependence of Temper
  Brittleness", Transactions AIME, Acta Metallurgica, Vol.25, 1977, p.345.

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