Hastelloy weld question

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I am new to this forum so apologies if this is not in the right place.I have worked for an electric heater manufacturer for 10 years and am very familiar with TIG welding Incoloy alloys and most SS materials, however this is a new one.I have a job that is calling for a Hastelloy (C-276) plate, .375 thick to be fillet welded to a 316SS pipe, .125 wall thickness, approx. 4" dia. I have at my disposal; Hastelloy, 308ss, 316ss, and Inconel 625 filler metals all in .0625 dia. Any suggestions on the welding procedure or any filler recommendations would be greatly appreciated.BTW, this is a non-pressure application, simply a housing for electical connections, must be water tight but no pressure rating or testing is required per our customer's specs.Thanx, Steve
Reply:Approach it as you would Inconel 625 but use the Hastelloy filler: ERNiCrMo-4. Keep it clean and make sure you have a slightly convex bead profile.
Reply:New to this site, but we do a similar job at work.  .375 316SS plate to .049" C276 tubing.  We use 1/16" c276 wire.  Try to keep the end of the filler as close to the weld pool as possible.  The hastelloy wire seems to sugar over very easy.
Reply:Thanx for the answers, this should make things go great.Thanx again, Steve