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  1. Arun George

    Post weld heat treatment for ASTM A213 Gr. T91, T22 & T11 common heat treatment temperature

    Hi Edstainless, I have to qualify WPS for these combination since i didn't have the particular match. Please see the attached PWHT recommendation, there it is identified in yellow color for lower critical temperature for each material and PWHT minimum & maximum ranges. So, I got confused to...
  2. Arun George

    Post weld heat treatment for ASTM A213 Gr. T91, T22 & T11 common heat treatment temperature

    Dear Team, I have to weld a combination of materials as mentioned below. 1. ASTM A213 T11 to T22 (ASME Section IX P No. 4 to P5A) 2. ASTM A213 T22 to T22 (P No. 5A to 5A) 3. ASTM A213 T22 to T91 (P No. 5A to P15E) Can anyone suggest a suitable PWHT temperature which can allow furnace heating of...

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