[MW:3980] Role of 'Si'- welding

Dear Moderator of the group,
Pl arrange to post the following:
Thank you,
Best Regards,
Vaidehi Ganesan.
-----------------------------------------------------------------------------------------------------------------------------------------
Dear Group members,
Kindly give feed back based on your experience for the following:

We all know the presence of "Si" helps during welding of austenitic
stainless-steels. What is the minimum "Si" required to weld 15Cr-15 Ni, Ti
stabilized austenitic stainless -steels (End-cap welding for Nuclear
application). One of the suggestions is minimum 0.5 % Si required for good
welding. Suppose to safe guard the other properties of the material
(seamless tube), if we reduce 'Si' to < 0.3 % (approx 0.28% Si), then, what
are the precautions to be taken regarding welding, electrodes, proceedures
etc to achieve good welding? Experts can send their opinion regarding,
whether with 0.28 % Si in 15 Cr-15 Ni, Ti stabilized austenitic
stainless-steels, any welding problems can be anticipated? Pl mark a copy of
your response to my gmail i.d also.

Thank you in advance,
Best Regards,
Vaidehi Ganesan.
--------------------------------------------------------------------------------
Dr. Vaidehi Ganesan
Metallurgy & Materials Group,
IGCAR, Kalpakkam-603 102, India.
=====================================================================