Welding of 2.25Cr-1Mo to 316 SS
Welding of 2.25Cr-1Mo to 316 SS
(OP)
I am preparing a Welding procedure for 2.25Cr-1Mo to 316SS.
From ASME VIII appendix R recommends 204C preheating temperature for 2.25Cr.
API 582 also recommends 175C Maximum of interpass temperature for 316 stainless steel.
1) I was wondering what temperature I can used for preheating and interpass for these two materials.
2) Can I use 1300F-1400F of PWHT temperature?
Thanks.
From ASME VIII appendix R recommends 204C preheating temperature for 2.25Cr.
API 582 also recommends 175C Maximum of interpass temperature for 316 stainless steel.
1) I was wondering what temperature I can used for preheating and interpass for these two materials.
2) Can I use 1300F-1400F of PWHT temperature?
Thanks.





RE: Welding of 2.25Cr-1Mo to 316 SS
However, if there is a lot of cyclic heating, you are actually better off with an inconel transition peice instead of welding the stainless direct to the Cr-Mo due to having a longer transition area for the thermal stresses generated by the different CTE of the materials.
RE: Welding of 2.25Cr-1Mo to 316 SS
RE: Welding of 2.25Cr-1Mo to 316 SS
Thanks for your advice.
I started another topic for these two materials in the corrosion engineering forum previously. That's the reason I asked the same questions in that post.