Welding Ferralium A 255

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I looking to see if anyone has experaince welding Alloy 255 and thoughts about heat imput.  We are going to try to weld this plate with a heat input of 65 KJ and pass testing for for intermetallics (ASTM A923 practice C).  The processes would be SAW, SMAW and FCAW in the 3G uphill position.  I would like to hear from anyone that has experiance with this material and thes type of heat.  ThanksJohn
Reply:my largest machine can only produce 45.8 kilojules of heat output.....darnit! Is this a question or a test for us. Submerged Arc in the 3G....hmmmmm.Yeah, yeah, I know you are a weldor too. But, are you a good one?
Reply:I have to say I am leery of the uphill SAW part.  Way back in the 80's when I touched on SAW I was told there was a 15 degree incline limit.  I am sure it would depend on the flux and how fluid the weld puddle is.  You should try posting this question at the AWS.org website forum. They have a lot of welding engineers and a lot of SAW questions over there.
Reply:Another propeitary alloy. Also known as ASTM A240 *ASTM A479 *ASTM A789 *ASTM A790 *ASTM A815 *UNS S39255Sort of a 400 series stainless with its own filler material dedicated to that metal. Made by Bonar Langley alloys. High temps and corrosive enviromentsand it is used on offshore oil rigs.I would check to see if a duoshield FCAW wire has been developed.Recommended filler metals for the duplex stainless steels are of matching compositions except that nickel is increased to 8-10 percent. For GTAW of Ferralium 255, ER2553 is recommended and for Sandvik 2205, ER2209 is recommended.Last edited by Donald Branscom; 03-27-2008 at 07:44 PM.