Materials & Welding: RE: [MW:26917] using of ER308 filer.

Monday, October 16, 2017

RE: [MW:26917] using of ER308 filer.

From your statement below, it looks like rest of the welds were made with welding consumables , other than 308. If your client/project specifications strictly calls for 316L welding consumable to be used then this weld has to be cut and re welded with 316L consumable.

If the client is open to NCR's, subject to the facts that process fluids will not harm or corrode the weld made with 308 weld filler/electrode, then you may opt for that route and try your luck.

Advice would be to document this weld in the weld map as well by doing PMI.

Thanks.

P.Goswami.P.Eng, IWE.

Welding & Metallurgical Specialist

Linkedin: https://www.linkedin.com/in/pradip-goswami-2999855/

Email:pgoswami@quickclic.net,pradip.goswami@gmail.com

From: 'james gerald' via Materials & Welding [mailto:materials-welding@googlegroups.com]
Sent: October 16, 2017 2:59 AM
To: materials-welding@googlegroups.com
Subject: Re: [MW:26915] using of ER308 filer.

I agree with Prinsen but only soft words please.

Thanks & Regards

J.Gerald Jayakumar

0091-9344954677

On Monday, October 16, 2017, 10:16:04 AM GMT+4, J Prinsen <weldtech@online.nl> wrote:

Mo + Ni in 316L for low temperature is bullshit

Mo is added to 316L for Chloride corrosion resistance

As is Mo also an ferrite promoting element, extra nickel has to be added to keep the ferrite content at reasonable levels (3-5%) for weldability (hot cracks)

When pipe is 304L there seems not to be any chloride corrosion resistance needed, so welding of 304L to 316L with a 304L matching electrode 308L is ok, also 316L is ok.

But welding shall be done according approved WPS, so welding with a 308L can still be a non-conformity, with the choice: scrap, repair or leave as is.
In this case I would prefer to leave as is, but a warning to both the welder and QC to follow the procedure for welding and consumable control is essential

Regards

Ir. J. Prinsen MSc/IWE

Metallurgical and Welding Engineer

Van: "Dinesh Somwanshi" <som.din@gmail.com>
Aan: materials-welding@googlegroups.com
Verzonden: Maandag 16 oktober 2017 04:25:21
Onderwerp: Re: [MW:26912] using of ER308 filer.

Dear . you were using material grade of 316l for low temp with added Mo. Ni%.

Using lower grade of filler equivalancies 308 against 316L not acceptable.

Thanking You,

With Regards..
Dinesh V Somwanshi
Api 570, Cswip 3.1,Bgas 2
Authorised Certified Piping, Welding, Painting Inspector.
00919881344135

On Oct 16, 2017 11:17 AM, "'sangram routray' via Materials & Welding" <materials-welding@googlegroups.com> wrote:

Dear group members ;
our sub-contractor welded one joint 304 PIPE to 316L valve by ER308 filler but client said its not acceptable.
can some one help me regarding above mater .
is it Acceptable or not?
Answerd with some code or standard reference.

Thanks & Regards

Sangramkeshari Routaray
Welding inspector

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