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In a message dated 2/24/2010 3:46:50 A.M. Pacific Standard Time,
james@guernseysubmarine.com writes:
I suspect the answer to this will be to use stainless wire but i would like to know why its needed. OOPS, I didn't answer the question......
It's needed because 309 stainless bonds to carbon steel better than
regular steel wire bonds to a stainless fitting. The 309 alloy filler rod has
the necessary metals in it's mix to bond with the stainless AND the carbon
steel. It can be prone to cracking, ( any weld can ) so pre-heating and slow
cooling is required. You mention "wire" which says to me "MIG"......not the
best choice. These welds should be done with "TIG"
Frank D.
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