Materials & Welding: Re: [MW:33153] RE: 33147] SA 387 GR 11 CL2 and SA 387 GR 22 CL2

Friday, June 17, 2022

Re: [MW:33153] RE: 33147] SA 387 GR 11 CL2 and SA 387 GR 22 CL2

Hi!

my experience

Normalising of weld of higher thickness reduces the YS and UTS cosiderably

as D/End manufacturer invariably ask for repeated Normalising during forming ( say 2 to 3 times) and they take soaking temperature to higher side i.e above 930 c

Therefor it is recomended to go for Total Hot forming of D/E ( with no weld seam)

and then after go for Nr +T to get back required properties

or Go for Crown and Petal type D/E having which does not req NR +T of Weld

(As its total LM parameter No increases)

Regards

On Thursday, 16 June, 2022, 08:27:27 pm IST, <pgoswami@rogers.com> wrote:

You should use E 8018 B2 or 8018B3L as SMAW consumables. SAW wire flux combination matching SMAW chemistry is also to be considered. If the hardness requirement is in place, then 8018 B3L would be advisable.

On Cr-Mo steels normalizing may sacrifice the Charpy impact , hence consumable with extra Mo(B3Lgrades) may be of help.

Pradip Goswami.P.Eng, IWE.

Independent Welding & Metallurgical Engineering Specialist

Saudi Aramco Approved Designated Project Welding Engineer (DPWR)

Qatar Petroleum Approved, SME-Materials & Corrosion Engineering.

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

Email:pgoswami@rogers.com,pradip.goswami@gmail.com

Cell/Whasapp:1-905-9793232

From: materials-welding@googlegroups.com <materials-welding@googlegroups.com> On Behalf Of Vishwas Keskar Welding Manager WELDING
Sent: June 16, 2022 2:23 AM
To: Materials & Welding <materials-welding@googlegroups.com>
Subject: [MW:33147] SA 387 GR 11 CL2 and SA 387 GR 22 CL2

Experts

The dished end is to be fabricated with one number Chordal seam for MOC of

1) SA 387 GR 11 CL2

2)SA 387 GR 22 CL2

One chordal seam in dished end is coming due to plate size( width) limitation and the diameter required of dished end. So butt joint welding is to be done followed by NDT .

Hot forming is planned . After forming is completed, separate Normalizing and tempering Heat treatment is required as per Client specification.

PQR is to be established as per ASME SEC IX .

Pl. suggest suitable consumable and maintain strength

Pl. share experience if any

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