Steel name: 304 Stainless Steel
  Diagram No.: 2943
  Type of diagram: TTS
  Chemical composition in weight %: 0.078% C, 1.12% Mn, 0.41% Si, 0.025% P, 0.027% S,
  8.49% Ni, 18.10% Cr, 0.21% Cu.
  Note: Precipitation diagram. Time-temperature sensitization and intergranular corrosion.
  Treatment: All samples were initially given a solution anneal heat treatment at 1100^oC
  (2010^oF) for 1 h, followed by a water quench. Some samples were then isothermally
  aged to determine the sensitization characteristics of the undeformed material. Other
  samples were first deformed and then aged. Aging heat treatments were isothermal
  and were followed by a water quench. An argon atmosphere was used for all heat
  treatments. The results if the modified Strass Test for undeformed and deformed T304
  samples. Each point is for a time and temperature of heating. Each symbol denotes the
  response in the test The dashed lines separate the time-temperature combinations
  which produce sensitization, from those do not.
  Source: C.L. Briant, A.M. Ritter, "The Effect of Deformation Induced Martensite on the
  Sensitization of Austenitic Stainless Steels", Metallurgical Transactions A, Vol.11A,
  ASM, December 1980, p.2009.

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