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[MW:12690] Material Selection

By Materials & Welding
Dear Allr,

Anybody Can Advice following points
  1. Sir how do we select the materials for the process equipments and what is the criteria for selection of materials ? If you have good literature on this topic, please forward it to me or send me some good links.?
  2. In ASME code for Austenitic stainless steel ( 18Cr-8Ni) no PWHT requirement is given, it says PWHT is neither permitted nor prohibited, but my service requires PWHT so how should we perform the PWHT and what are the factors should i consider while ordering the materials..
  3. Sir can you put some light on LAS materials ( 2 1/4 Cr - 1Mo and 1 1/4 - 1/2 Mo), like what is the difference and when should we choose SA 387 Gr.11 CL.1 / CL.2 and SA 387 Gr.22 CL.1/ CL.2 ?
Sir please shear your experience of above points.

Regards


Vijay Katkar

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