Steel name: 347 Stainless Steel
Diagram No.: 2925
Type of diagram: TTS
Chemical composition in weight %: 0.07% C, 1.50% Mn, 0.38% Si, 0.031% P, 0.008% S,
11.75% Ni, 18.41% Cr, 0.81% Nb, 0.050% N.
Note: Precipitation diagram. Time-temperature sensitization and intergranular corrosion.
Time-temperature sensitization diagram. Sensitization as determined by the boiling nitric
acid test. Stabilized at 900
oC (1650
oF) 2 h, heated and cooled between 1/2 in and 1/4 in
  stainless plates.
Source: H.F. Ebling, M.A. Scheil, "Time-Temperature-Sensitization (TTS) Diagram for
Types 347, 304L and 316L Stainless Steels", ASTM STP 369, p.275.
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