CuNi and Inconel 625

Date 07-08-2009 16:46

Can someone advise if Inconel 625 material can be welded to CuNi flange using GTAW process. I could not find a suitable filler selection after checking through some welding consumbles guide books. Can either ERCuNi or ErCrNiMo3 fillers be used?

By ssbn727 (*****)

Date 07-08-2009 22:20 Edited 07-08-2009 22:24

Hi Boon!

Look at the chart on page 32 of 52 in this link from Special metals Inc. Huntington Alloys Division... Remember to match the 2 metal grades and focus on the right side of the top of the chart for GTAW filler metal recommendations. Most important is to consider service application conditions. ;) :) :)

http://www.specialmetals.com/documents/Joining%20(Oct%2003).pdf

Here's the main site url:

http://www.specialmetals.com/general.php

Respectfully,
Henry

By Steve.E (**)

Date 07-10-2009 11:26

Hi Boon , don't use a chromium rich consumable for welding Cu Ni it will more than likely end up full off cracks. If you cant match the material a straight nickle filler will work.