Joining Stellite 250 to 304SS

[donnaj]

We have an application that requires joining Stellite 250 to 304SS. Can anyone advise on what filler metal to use and if there are requirements for post weld heat treat?

Thanks

 

[metengr]

donnaj;
For this application, I would suggest using E309 as a butter layer (3/16" or so) on the 304 ss and deposit the Stellite 250 on the butter layer. There should be no PWHT requirement.

 

[MikeMet]

You question is a bit confusion based on metgers answer. I will offer this

If you are joing a piece of Stellite 250 to a pieces of Type 304 sst I recommend you join the two using Inco 82 filler metal. My preference, I always seem to have very good luck using Inco 82 filler when joining hardfacing allows to anything.

If you are using Stellite 250 powder or rod to weld overlay a piece of Type 304 sst, not butter pass is needed. Type 304 sst has enough ductility on its own to prevent problems.