Welding kiiled carbon steel piping, wet H2S resistant

[copperly]

Would the suggested fillers for a GTAW/SMAW procedure be ER70S-6 and E-7018-1 ? Thanks for your suggestions

 

[vesselfab]

i would think that a er70s-2 or -3 would provide much more ductile root passes and less likely to crack.

personally....i do not like er70 s-6. too hard

 

[GRoberts]

Also, ER70S-6 can exceed the ASME Section IX A number 1 limits. It isn't preferred for sour service to my knowledge. 7018-1 is suitable. Some manufacturers make some 7018 that is designed for PWHT. Don't use one of those unless you are doing PWHT, as it can have a higher hardness without PWHT.