Welding 9% Cr to 310s SS
Welding 9% Cr to 310s SS
(OP)
Hello,
I am looking for the filler metal for welding 9%Cr to 310s SS with GTAW and SMAW. The P-No. is P5B to P8. The joint will be Single Vee Groove open root.
Thanks,
QAScott
I am looking for the filler metal for welding 9%Cr to 310s SS with GTAW and SMAW. The P-No. is P5B to P8. The joint will be Single Vee Groove open root.
Thanks,
QAScott





RE: Welding 9% Cr to 310s SS
Can you give us an ASTM spec on the 9% Cr so we can see what else is in there?
Koz
RE: Welding 9% Cr to 310s SS
It does not really matter if this is standard 9CrMo or 9CrMo modified (P91). The power generation industry has many years of experience with dissimilar joints and have used nickel based consumables ie AWS A5.11 ENiCrFe-3 SMAW, AWS A5.14 ERNiCr-3 GTAW.
As 310 is fully austenitic there will be no problems undergoing the post weld heat treatment for the 9Cr material.
Hope that this of use
RE: Welding 9% Cr to 310s SS
ASTM SA387 G91 Cl2 U
P5B
RE: Welding 9% Cr to 310s SS
Scott
RE: Welding 9% Cr to 310s SS
RE: Welding 9% Cr to 310s SS
refer to ASME SFA 5.01 for consumables dont assume that the inconel consumables are ok they can be embrittled at the PWHT. EPRI have prepared a document Guideline for Welding P(T)91 materials ..it runs to about 30pages it covers welding to ss but not 310 so I would do a lot of asking around and procedures before I jumped into the real weld
"P(T)91 should not be treated as just another CrMo steel" quote EPRI..good luck