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18Cr-8Ni Austenitic Stainless Steel
Steel name: 18Cr-8Ni Austenitic Stainless Steel
Diagram No.: 2936
Type of diagram: TTS
Chemical composition in weight %: No data
Steel group: Stainless steels
Note: Time-temperature sensitization and intergranular corrosion. Time-temperature relationship for susceptibility to intergranular corrosion of 18%Cr-8%Ni austenitic stainless steel with various C contents as determined by the Strauss (boiling acidified copper sulphate) test. Below approximately 550oC diffusion rates are too low for significant sensitization to accur in a short time, equally, above approximately 850oC chromium carbide precipitation is not only slow but also diffusion rates are sufficiently high to replenish the Cr-deficient region. The removal of sensitization in this manner by prelonged holding at 900-950oC is sometimes termed a 'stabilizing heat treatment'.
Reference: Not shown in this demo version.
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Disclaimer: The information and data presented herein are typical or average values and are not a guarantee of maximum or minimum values. Applications specifically suggested for material described herein are made solely for the purpose of illustration to enable the reader to make his own evaluation and are not intended as warranties, either express or implied, of fitness for these or other puposes. There is no representation that the recipient of this literature will receive updated editions as the become available.