4130 Material with Inconel 625 Inlay

[suthagarqa]

Hi team,

My material 4130 NACE with normalised + hardened + tempered condition. Wanted to weld with Inconel 625.

Can advise whether 4130 needs to do stress relief before welding & PWHT after welding?

 

[metengr]

To meet the hardness criteria in the 4130 base metal heat affected zone beneath the inlay, you should apply preheat (350 deg F) and perform a post weld heat treatment 50 deg F below the original tempering temperature.

 

[Guest102023]

What is an inlay?

"If you don't have time to do the job right the first time, when are you going to find time to repair it?"

 

[metengr]

What is an inlay?

Weld layer(s) that are deposited on the bore or inner diameter surface of a component, versus weld layers deposited on the outer surface. Both are technically weld overlays.

 

[suthagarqa]

Metengr:

Does this means stress relief not required before weld?

 

[metengr]

suthagarqa;
I would not stress relieve before welding. You will need preheat.