[MW:7062] RE: 7059] WELDING OF SA 240 GR 321

Manoj, a valid question, often welding engineers would use a PQR to support many a welding procedures.

Yes –

· If the design and construction code is only ASME –Sec-IX testing , i.e. and welding procedure qualification calls for just regular mechanical tests, e.g. tensile and bends.

No:-

· If there’re additional testing requirements such as intergranular corrosion test, conforming to ASTM A-262 Practice-A/B/C/D/E or any other specific tests required by any client or project specifications which pertains to corrosion testing. Corrosion is very specific to materials type.

· If there’s requirement for impact testing then change of AWS classification becomes a variable (supplementary essential variable).

· If there’re hardness requirements on the PQR, hardness requirements are often related to corrosion properties, and materials can not be interchanged.

Thanks

Pradip Goswami, P.Eng

Welding & Metallurgical Engineer/Specialist

Email-pgoswami@sympatico.ca,

pgoswami@quickclic.net

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of manoj john
Sent: Friday, September 17, 2010 5:35 AM
To: materials-welding@googlegroups.com
Subject: [MW:7059] WELDING OF SA 240 GR 321

Dear All,

I have qualified following WPS:

Material : SA 240 GR 304

Filler metal : E 308 and ER 308

Welding process : GTAW and SMAW

Can I weld SA 240 GR 321 to SA 240 GR 321 material using above WPS. All variables are same including thickness range only change is fillelr metal, instead of ER 308 and E 308 it will be ER 347 and E 347 respectively.

Thank you all in advance

Best Regards.

Manoj

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