Dear Venkat,
You can use ERNiCrMo3 or ErNiCrMo10
Bala Nechur,
Corporate QA/QC Manager
Phoenix Industrial
Dear Experts,
Material : Inconel ( Ni: 31-34 %, Cr: 19-21%, Nb 8 - 10%)
Opearting Temeprature: 840 deg.C
Pressure : 20 bar
Fluid : Methane reformed gas
Service: Non sour
The header pipe is 10" and weleded with 28 weldelets of welded on the head pipe as branch connetions. After almost 6 years of service, cracks are noticed almost on all the weld toes.
Initially these joints are welded by GTAW process by using ERNiCrCoMo-1. No PWHT.
Now one of expert has advised to remove all cracks by grinding,followed by DP, Then solution annealing at 1100-1150 deg C for 3 hours and welded by ER NiCrMo3 after solution annealing.
Please advise whether it is correct.
Can ER NiCrMo3 have resistance to 840 deg. C
Please give suggestions for repair
Regards
Venkat
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