wontweldcantweld
Mechanical
Hello all,
This is for CRO (Corrosion Resistant Overlay) i.e. cladding of 8630 80KSI components.
Basically, I'm reviewing a welding procedure for a client, which they have welded two separate test pieces. It's the same material grade (8630, which I believe is unassigned under ASME) but one test piece is done on 80KSI (552 MPa), and the other on 75KSI (517 MPa).
They've both been combined into a single WPS welding procedure, which has got 80KSI on it. I've questioned it but been told that under ASME that SMYS is not an essential variable and therefore as it's the same 'grade' (despite being unassigned) this would be acceptable as its for overlay cladding, not a butt weld. Additionally, the PM and AWM tensile of the 70KSI have also come out at higher than 80KSI which is where I think this argument has come from.
I would say this wouldn't be qualified but can also see their argument. Is anyone aware of this being permitted under ASME or if it's a non-essential variable?
Thanks,
wontweldcantweld
This is for CRO (Corrosion Resistant Overlay) i.e. cladding of 8630 80KSI components.
Basically, I'm reviewing a welding procedure for a client, which they have welded two separate test pieces. It's the same material grade (8630, which I believe is unassigned under ASME) but one test piece is done on 80KSI (552 MPa), and the other on 75KSI (517 MPa).
They've both been combined into a single WPS welding procedure, which has got 80KSI on it. I've questioned it but been told that under ASME that SMYS is not an essential variable and therefore as it's the same 'grade' (despite being unassigned) this would be acceptable as its for overlay cladding, not a butt weld. Additionally, the PM and AWM tensile of the 70KSI have also come out at higher than 80KSI which is where I think this argument has come from.
I would say this wouldn't be qualified but can also see their argument. Is anyone aware of this being permitted under ASME or if it's a non-essential variable?
Thanks,
wontweldcantweld
