Materials & Welding: November 2021

Monday, November 29, 2021

[MW:32620] Re: Regarding PWHT THICKNESS

Some basic understanding on code reading, In B31.3 they have simply mentioned about material thickness, P No and group no which is interlink with each other in one table and below is code statement.

331 HEAT TREATMENT

331.1 General

331.1.1 Postweld Heat Treatment Requirements ð18Þ

(a) PWHT shall be in accordance with the material

groupings (P-Nos. and Group Nos.) and ranges in

Table 331.1.1 except as provided in Table 331.1.2 and

Table 331.1.3. See Appendix F, para. F331.1. The P Numbers

and Group Numbers are defined in ASME

BPVC, Section IX, Table QW/QB-422. (Note that the PNos.

are also listed in Appendix A.)

It means all factor shall be always taken in to consideration and not any particular.

Check also about CEV for PWHT.

Regards,

On Thursday, September 9, 2021 at 9:17:38 AM UTC+3 senins wrote:

Dear all,
Pls I needs your all valuable comments regarding PWHT thickness,
As per ASME B31.3 2018
,Table 331.1.1, whether PWHT based on thickness of base metal or P.No and Group No,
I appreciate your guidance,
SENTHIL P

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Re: [MW:32620] AISI 4145

Thanks ;

Infact we cleared this issue

300 degree was the preheat given .. even we maintained the inter pass temperature above 250 .. finished the welding after 8hrs continuously without any interruptions.. finally gave pwht @ 600 degree with half hr hold .. later slow cooling with the thermal blanket still in place ..

Tempering must have gone away by this process and the tensile also would have come down .. but still we pressure tested it at 300 bar without failure

On Mon, Nov 29, 2021 at 13:26 Simon Krismer <simon@wqms.com.au> wrote:

150C is way too low for 4145. The HAZ Hardness will be 50-60HRC at that temperature, and you are no doubt getting hydrogen cracking rather than lack of fusion.
You will need 250C preheat at least, probably higher for the root run.

On Friday, 30 July 2021 at 12:13:53 pm UTC+10 chris wrote:
Hello friends;

Was this query answered?
I am also encountering a similar problem in welding 4145tube to S355.

we are experiencing a lack of fusion on the 4145 tube side.

Preheat given 150°C
Electrodes tried E7018 and E10018
MTC attached. The tube is Quench tempered.

Any suggestions on this?

Thanks in Advance.
Chris

On Monday, August 1, 2011 at 8:40:15 AM UTC+4 Mitesh Patel wrote:
Dear Mubben

Please Find H/W Attached Doc. Which is help to selection of Welding consumable ( SMAW & GTAW )

Mitesh Patel
Sr, QA/QC Engg

On Fri, Jul 29, 2011 at 10:31 PM, mubeen mubeen <mube...@gmail.com> wrote:

Hi,

Can anybody help me out in order to weld subject base material with appropriate consumables(Electrode or filler wire), along with its preheat and post weld heat treatment temperatures.

Regards,
Mubeen
QA Engineer

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THANKS AND REGARDS

CHRIS SABU

0559695451

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[MW:32620] Re: Hydrotest as per ASME B 31.3

345.3 Preparation for Leak Test

345.3.1 Joints Exposed

(d) All joints may be primed and painted prior to leak

testing unless a sensitive leak test (para. 345.8) is

required.

Regards,

On Tuesday, 12 October 2021 at 14:47:49 UTC+3 kkmec...@gmail.com wrote:

Dear Experts,
As per b 31.3 Joints can be painted before leak test. Is the leak test referred here as a hydrotest also? Please confirm.

Best Regards,

Krishna Kamal Nayan

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Saturday, November 27, 2021

Re: [MW:32619] AISI 4145

150C is way too low for 4145. The HAZ Hardness will be 50-60HRC at that temperature, and you are no doubt getting hydrogen cracking rather than lack of fusion.

You will need 250C preheat at least, probably higher for the root run.

On Friday, 30 July 2021 at 12:13:53 pm UTC+10 chris wrote:

Hello friends;

Was this query answered?
I am also encountering a similar problem in welding 4145tube to S355.

we are experiencing a lack of fusion on the 4145 tube side.

Preheat given 150°C
Electrodes tried E7018 and E10018
MTC attached. The tube is Quench tempered.

Any suggestions on this?

Thanks in Advance.
Chris

On Monday, August 1, 2011 at 8:40:15 AM UTC+4 Mitesh Patel wrote:
Dear Mubben

Please Find H/W Attached Doc. Which is help to selection of Welding consumable ( SMAW & GTAW )

Mitesh Patel
Sr, QA/QC Engg

On Fri, Jul 29, 2011 at 10:31 PM, mubeen mubeen <mube...@gmail.com> wrote:

Hi,

Can anybody help me out in order to weld subject base material with appropriate consumables(Electrode or filler wire), along with its preheat and post weld heat treatment temperatures.

Regards,
Mubeen
QA Engineer

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Thursday, November 25, 2021

Re: [MW:32618] Digest for materials-welding@googlegroups.com - 4 updates in 1 topic

Reply to the question of Mr K D Pandithan

As per the recommendation of Special Metals--US A

Following grades are recommended for dissimilar welding of 625 to grade 310 S Steel

1--INCONEL 617==ERNICRCOMO-1 FOR HIGHEST TEMP SERVICE (INCO 617 HAS HIGH COBALT CONTENT)

2--INCONEL 625==ERNICRMO-3 FOR MEDIUM TEMP SERVICE

3--INCONEL 82=ERNICR-3 FOR LOWER SERVICE TEMP

Regards

C C GIROTRA

=====================================================================================

On Thu, Nov 25, 2021 at 10:23 AM <materials-welding@googlegroups.com> wrote:

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[MW:32611] Which Filler wire to be used in between P43 (Inconel 625) to P8 (A240 310S) by GTAW) - 4 Updates

[MW:32611] Which Filler wire to be used in between P43 (Inconel 625) to P8 (A240 310S) by GTAW)

Kannayeram Gnanapandithan <kgpandithan@gmail.com>: Nov 24 10:59AM +0530

inconel 625

THANKS & BEST REGARDS,
KG.PANDITHAN, BE, IWE, CSWIP 3.1,
ISO 9712 Level 2 in VT,
ASNT-Level II in PT,MT,RT & UT,
LA ISO 9001-2015,
International Welding Engineer.
CONSULTANT-WELDING & QUALITY
Mobile no: +919940739349

Arun Padman <arunpadman0105@gmail.com>: Nov 24 10:23AM +0300

Dear,

ER NiCrMo-3 is suitable to weld 625 to 600/625/825/C-22/B-2 etc., not 310.

Regards,

*Arun Padman Manayil*
P Save a tree. Please don't print this e-mail unless you really need to

Kannayeram Gnanapandithan <kgpandithan@gmail.com>: Nov 24 02:45PM +0530

Why Inconel 625 is not suitable, could you elaborate to understand.

THANKS & BEST REGARDS,
KG.PANDITHAN, BE, IWE, CSWIP 3.1,
ISO 9712 Level 2 in VT,
ASNT-Level II in PT,MT,RT & UT,
LA ISO 9001-2015,
International Welding Engineer.
CONSULTANT-WELDING & QUALITY
Mobile no: +919940739349

On Wed, Nov 24, 2021 at 1:39 PM Arun Padman <arunpadman0105@gmail.com>
wrote:

sajeed zaheer <sajeed7674@gmail.com>: Nov 24 12:18PM +0300

For the first point the filler you can used ER Ni cr Mo-3
For dish head after cold forming it depends on fiber elongation of
material usually 5 to 10 fiber elongation PWHT is required and above 10
Normalizing and tempering is required.

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Wednesday, November 24, 2021

Re: [MW:32616] Re: Which Filler wire to be used in between P43 (Inconel 625) to P8 (A240 310S) by GTAW)

For the first point the filler you can used ER Ni cr Mo-3

For dish head after cold forming it depends on fiber elongation of material usually 5 to 10 fiber elongation PWHT is required and above 10 Normalizing and tempering is required.

On Wed, Nov 24, 2021 at 6:19 AM rahmat khan <mkrahmat11730@gmail.com> wrote:

As per my understanding For P43 Filler wire ER NiCrMo-3 is suitable as per chemical and mechanical properties.

On Tuesday, November 23, 2021 at 2:14:21 PM UTC+5:30 rahmat khan wrote:
Dear All,

Please help me with this:

1) which filler wire is to be used for GTAW welding of two dissimilar materials P number that is P43 (Inconel 625) to P8 (A240 310S).

2) For SA 516 Gr 70 22mm thick. Ellipsoidal 2:1 dish end, which heat treatment to be used as per ASME Sec VIII Div I UCS 56 After cold forming of dish end.

Please help me I this?

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Re: [MW:32616] Re: Which Filler wire to be used in between P43 (Inconel 625) to P8 (A240 310S) by GTAW)

Why Inconel 625 is not suitable, could you elaborate to understand.

THANKS & BEST REGARDS,

KG.PANDITHAN, BE, IWE, CSWIP 3.1,

ISO 9712 Level 2 in VT,

ASNT-Level II in PT,MT,RT & UT,

LA ISO 9001-2015,

International Welding Engineer.

CONSULTANT-WELDING & QUALITY

Mobile no: +919940739349

On Wed, Nov 24, 2021 at 1:39 PM Arun Padman <arunpadman0105@gmail.com> wrote:

Dear,

ER NiCrMo-3 is suitable to weld 625 to 600/625/825/C-22/B-2 etc., not 310.

Regards,

Arun Padman Manayil
P Save a tree. Please don't print this e-mail unless you really need to

On Wed, Nov 24, 2021 at 6:19 AM rahmat khan <mkrahmat11730@gmail.com> wrote:
As per my understanding For P43 Filler wire ER NiCrMo-3 is suitable as per chemical and mechanical properties.

On Tuesday, November 23, 2021 at 2:14:21 PM UTC+5:30 rahmat khan wrote:
Dear All,

Please help me with this:

1) which filler wire is to be used for GTAW welding of two dissimilar materials P number that is P43 (Inconel 625) to P8 (A240 310S).

2) For SA 516 Gr 70 22mm thick. Ellipsoidal 2:1 dish end, which heat treatment to be used as per ASME Sec VIII Div I UCS 56 After cold forming of dish end.

Please help me I this?

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Re: [MW:32615] Re: Which Filler wire to be used in between P43 (Inconel 625) to P8 (A240 310S) by GTAW)

Dear,

ER NiCrMo-3 is suitable to weld 625 to 600/625/825/C-22/B-2 etc., not 310.

Regards,

Arun Padman Manayil

P Save a tree. Please don't print this e-mail unless you really need to

On Wed, Nov 24, 2021 at 6:19 AM rahmat khan <mkrahmat11730@gmail.com> wrote:

As per my understanding For P43 Filler wire ER NiCrMo-3 is suitable as per chemical and mechanical properties.

On Tuesday, November 23, 2021 at 2:14:21 PM UTC+5:30 rahmat khan wrote:
Dear All,

Please help me with this:

1) which filler wire is to be used for GTAW welding of two dissimilar materials P number that is P43 (Inconel 625) to P8 (A240 310S).

2) For SA 516 Gr 70 22mm thick. Ellipsoidal 2:1 dish end, which heat treatment to be used as per ASME Sec VIII Div I UCS 56 After cold forming of dish end.

Please help me I this?

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Re: [MW:32614] Which Filler wire to be used in between P43 (Inconel 625) to P8 (A240 310S) by GTAW)

inconel 625

THANKS & BEST REGARDS,

KG.PANDITHAN, BE, IWE, CSWIP 3.1,

ISO 9712 Level 2 in VT,

ASNT-Level II in PT,MT,RT & UT,

LA ISO 9001-2015,

International Welding Engineer.

CONSULTANT-WELDING & QUALITY

Mobile no: +919940739349

On Tue, Nov 23, 2021 at 2:14 PM rahmat khan <mkrahmat11730@gmail.com> wrote:

Dear All,

Please help me with this:

1) which filler wire is to be used for GTAW welding of two dissimilar materials P number that is P43 (Inconel 625) to P8 (A240 310S).

2) For SA 516 Gr 70 22mm thick. Ellipsoidal 2:1 dish end, which heat treatment to be used as per ASME Sec VIII Div I UCS 56 After cold forming of dish end.

Please help me I this?

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Tuesday, November 23, 2021

[MW:32613] Re: Which Filler wire to be used in between P43 (Inconel 625) to P8 (A240 310S) by GTAW)

As per my understanding For P43 Filler wire ER NiCrMo-3 is suitable as per chemical and mechanical properties.

On Tuesday, November 23, 2021 at 2:14:21 PM UTC+5:30 rahmat khan wrote:

Dear All,

Please help me with this:

1) which filler wire is to be used for GTAW welding of two dissimilar materials P number that is P43 (Inconel 625) to P8 (A240 310S).

2) For SA 516 Gr 70 22mm thick. Ellipsoidal 2:1 dish end, which heat treatment to be used as per ASME Sec VIII Div I UCS 56 After cold forming of dish end.

Please help me I this?

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Re: [MW:32612] Which Filler wire to be used in between P43 (Inconel 625) to P8 (A240 310S) by GTAW)

Dear,

For welding Inconel 625 to 310 you can use ER NiCrFe-2 or-3.

Regards,

Arun Padman Manayil

P Save a tree. Please don't print this e-mail unless you really need to

On Tue, Nov 23, 2021 at 11:44 AM rahmat khan <mkrahmat11730@gmail.com> wrote:

Dear All,

Please help me with this:

1) which filler wire is to be used for GTAW welding of two dissimilar materials P number that is P43 (Inconel 625) to P8 (A240 310S).

2) For SA 516 Gr 70 22mm thick. Ellipsoidal 2:1 dish end, which heat treatment to be used as per ASME Sec VIII Div I UCS 56 After cold forming of dish end.

Please help me I this?

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[MW:32611] Which Filler wire to be used in between P43 (Inconel 625) to P8 (A240 310S) by GTAW)

Dear All,

Please help me with this:

1) which filler wire is to be used for GTAW welding of two dissimilar materials P number that is P43 (Inconel 625) to P8 (A240 310S).

2) For SA 516 Gr 70 22mm thick. Ellipsoidal 2:1 dish end, which heat treatment to be used as per ASME Sec VIII Div I UCS 56 After cold forming of dish end.

Please help me I this?

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Monday, November 22, 2021

[MW:32609] material equivalent

Dear experts,

What is the ASTM equivalent material for JAPANESE STANDARD SN53B11.

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Tuesday, November 16, 2021

Re: [MW:32608] Pump Impeller crack repair

Dear,

U can use ERCuAl-A2

Take care if the pump working in heavy corrosive fluid , then impeller to be heat treated after welding repair

Best Regards ,

ENG. Ahmed Osman

On Tuesday, November 16, 2021, 06:33:25 a.m. GMT+3, alexcalangi.cpmcgsi@gmail.com <alexcalangi.cpmcgsi@gmail.com> wrote:

Dear Experts,

We have a pump impeller with crack for repair. The material specification for this impeller is Aluminum Bronze Casting (AlBC3 / ASTM C95800).

With this regards, what should be the appropriate welding filler or electrode to be used for this type of material?

Thanks in advance for your support.

Best regards,

Alex

Re: [MW:32607] Digest for materials-welding@googlegroups.com - 1 update in 1 topic

On Tue, Nov 16, 2021 at 10:22 AM <materials-welding@googlegroups.com> wrote:

materials-welding@googlegroups.com Google Groups

Dear Mr Alex

Your material 95800 is commonly used Al Bronze with Nickel . It is used for sea water service.

Please use matching grade electrode /wire conforming to AWS ECuAlNi/ERCuAlNi grades

A well known brand to suit is AMPCOTRODE 46 electrode and AMPCOTRODE 46 wire.

You can use any other brand too as long it is as per AWS standard.

Regards

C C Girotra

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Pump Impeller crack repair - 1 Update

Pump Impeller crack repair

<alexcalangi.cpmcgsi@gmail.com>: Nov 16 11:31AM +0800

Dear Experts,

We have a pump impeller with crack for repair. The material specification
for this impeller is Aluminum Bronze Casting (AlBC3 / ASTM C95800).

With this regards, what should be the appropriate welding filler or
electrode to be used for this type of material?

Thanks in advance for your support.

Best regards,

Alex

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[MW:32606] Pump Impeller crack repair

Dear Experts,

We have a pump impeller with crack for repair. The material specification for this impeller is Aluminum Bronze Casting (AlBC3 / ASTM C95800).

With this regards, what should be the appropriate welding filler or electrode to be used for this type of material?

Thanks in advance for your support.

Best regards,

Alex

Friday, November 12, 2021

Re: [MW:32603] Pickling and Passivation of Hastelloy

Yes it is mandatory to resist these we have to restist % of oxygen during welding .

Reason is this there is a chances of formation of oxide on weld and adjascent area heat sinks marks found with defferent colour which highlights a depletion of corrosive property.

By pickling passivation its help to reform that llayer and safe material and weld.

Its shouod be general practise no need to mention it as a stage in itp.

As per our manufacturing practise we did it regular basis and got good results.

It will help after installation during service also.

Go for it frelly it helps.

I m sharing my experience not bookish lines

On Thu, 11 Nov 2021, 7:11 am Maulik Thakkar, <mlkthakkar2@gmail.com> wrote:

Dear all,

Can any one suggest picking and Passivation procedure for Hastelloy?

After Heat Treatment and After Welding.

Is it mandatory to perform Picking and Passivation?

Please provide literature or Standard if any.

Regards,
Maulik

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Thursday, November 11, 2021

RE: [MW:32603] Crack issue in hastalloy22

Dear Neilash,

What happens is that you must maintain a constant preheating of the base metal side, during the application of the Hastelloy C22 cladding.

Why ?: The 1.4776 base material has a high carbon content (0.30 to 0.45%) and a high Cr content (about 30%), it is a high temperature resistant stainless steel. And C22 is high alloy too. A little difficult to welding.

To avoid those hot cracks from the cladding, preheat to 350 °F on the opposite side of the base metal, approximately for the duration of the weld. Then, immediately, cover the piece with mineral wool and let it cool slowly, slowly, to room temperature. Do the corresponding NDTs again. And evaluate.

Luck!

Ramon Briceno

linkedin.com/in/ramonbriceno-metalengineer

De: 'Neilash Kumar' via Materials & Welding <materials-welding@googlegroups.com>
Enviado: miércoles, 10 de noviembre de 2021 11:19 p. m.
Para: materials-welding@googlegroups.com <materials-welding@googlegroups.com>
Asunto: [MW:32601] Crack issue in hastalloy22

Dear Experts,

During cladding using Hasteloy C22 consumable on reaction chamber roll with base material 1.4776/ 30%CrMo steel

we immediately noticed during a small test clad, cracks (a lot). as per picture

Pls advise me what we could do to avoid cracks?

Best Regards

Neilashkumar P

Sent from Yahoo Mail on Android

Re: [MW:32601] Heat treatment regarding

How much flared dia from to which dia

What is % ?

On Thu, 11 Nov 2021, 08:41 Raja Pandiyan, <krajapandiyan@gmail.com> wrote:

Dear experts,
Pl clarify the heat treatment requirements for SA106 Gr.B pipe I.D to be flared and done by hot formed operation like red hot heating with hammering of die in the pipe id to get the required dimensions.

Does it require heat treatment?

Also the above said process is good engineering practice for flaring operation of pipe?

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[MW:32601] Crack issue in hastalloy22

Dear Experts,

During cladding using Hasteloy C22 consumable on reaction chamber roll with base material 1.4776/ 30%CrMo steel

we immediately noticed during a small test clad, cracks (a lot). as per picture

Pls advise me what we could do to avoid cracks?

Best Regards

Neilashkumar P

Sent from Yahoo Mail on Android

Wednesday, November 10, 2021

[MW:32599] Pickling and Passivation of Hastelloy

Dear all,

Can any one suggest picking and Passivation procedure for Hastelloy?

After Heat Treatment and After Welding.

Is it mandatory to perform Picking and Passivation?

Please provide literature or Standard if any.

Regards,

Maulik

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[MW:32599] Heat treatment regarding

Dear experts,

Pl clarify the heat treatment requirements for SA106 Gr.B pipe I.D to be flared and done by hot formed operation like red hot heating with hammering of die in the pipe id to get the required dimensions.

Does it require heat treatment?

Also the above said process is good engineering practice for flaring operation of pipe?

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Sunday, November 7, 2021

Re: [MW:32595] PQR TEST FAILURE

Dear QA/QC

Bend and impact test failure means that you have more interpass temp during welding. And also undercuts between passes and not cleaning between passes.

We can infer the following:

1. Welder and inspector did not pay attention to interpass temp in an attempt to complete the joint faster.

2. Welder welded with high voltage arc which created undercuts on the weld joint face and did not remove those undercuts by grinding.

3. Heat input during welding was not calculated and maintained during welding.

4. Check the compatibility of filler metal used for welding this dissimilar joint.

The only way is to re weld another pqr with following corrections.

Regards,

Charles.

On Fri, Nov 5, 2021, 5:53 PM QA/QC <adnanziad49@gmail.com> wrote:

Dear masters
durring the mechanical tests for our WPS
1- piping B31.3
SS to DSS TEST COUPON 2" thk 3.05 mm

in the bending test with 4 test one is failure rejected
so in this case IS IT ACCEPTABLE

ALSO FOR ANOTHER PQR
2- PIPING B31.3
CS TO CS PIPE TO FLANGE API 5L GR B TO ASTM A105

THE FAILURE IN HAZ OF FLANGE WHAT IS THE ACCEPTABLE HERE

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RE: [MW:32596] Alternative MOC - SA387 + SS.304 cladding to complete SS.304

Dear Uday,

Look at this recommendation, for the replacement you are looking for:

1. Set the corrosive environment to 425°C of SA-382 F11 Cl2 steel with cladding SS304.

2. Depending on whether the environment is oxidizing or reducing, 300 series stainless steel works well at higher temperatures.

3. To do this, select stainless steel type SS304L. Easier to weld, and less risk of IGC (intergranular corrosion) due to precipitation of chromium carbides, type M23C6.

4. Use SS 304L base material in solution annealing condition before welding.

5. Use filler material type E-308L for welding.

6. Depending on the thickness of the piece> 1", carry out PWHT of dissolving chromium carbides. Although for smaller thicknesses, the welding of the SS304L does not need PWHT. Check.

Regards,

Ramon Briceno

linkedin.com/in/ramonbriceno-metalengineer

De: materials-welding@googlegroups.com <materials-welding@googlegroups.com> en nombre de uday prabhu <uday31@gmail.com>
Enviado: sábado, 6 de noviembre de 2021 8:46 a. m.
Para: Materials & Welding <materials-welding@googlegroups.com>
Asunto: [MW:32591] Alternative MOC - SA387 + SS.304 cladding to complete SS.304

Dear Experts,

Vessel MOC = SA387 GR F11 CL2 + 3mm SS.304 clading

Max operating Temp = 425 C

Max Pr = 20 bar (g)

Can we replace above moc with SS.304.

Will there be Sensitization issues a this temp ??

Regards,

Uday Prabhu

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Saturday, November 6, 2021

[MW:32594] RE: Alternative MOC - SA387 + SS.304 cladding to complete SS.304

Hi Uday,

Choice of S.S 304 may be correct for the said design temperature(425 Deg C). In order to keep the IGC/ sensitization factor under control use 308L welding consumables/fillers would be advisable.

It would be good to know what's the process fluid involved? If the process fluid is aggressive, then a switch to SS 316/316L would be a better choice. This would be a process engineer/metallurgical engineers' call to select 304 or other alternatives (316/316L) as needed.

Thanks

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

Austenitic Stainless Steel Sensitization | Austral Wright Metals

From: uday prabhu <uday31@gmail.com>
Sent: November 6, 2021 8:46 AM
To: Materials & Welding <materials-welding@googlegroups.com>
Subject: Alternative MOC - SA387 + SS.304 cladding to complete SS.304

Dear Experts,

Vessel MOC = SA387 GR F11 CL2 + 3mm SS.304 cladding

Max operating Temp = 425 C

Max Pr = 20 bar (g)

Can we replace above moc with SS.304.

Will there be Sensitization issues a this temp ??

Regards,

Uday Prabhu

Virus-free. www.avg.com

[MW:32596] Mill tolerance as per ASME

Mill tolerance for the seamless pipe is 12.50% and 0.3mm for the welded pipe.

Whereas Mill tolerance for the seamless/welded fitting & flange is 12.50%

Is standard more stringent in case of welded pipes ?

Please justify.

Regards

Rishabh

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Re: [MW:32593] Alternative MOC - SA387 + SS.304 cladding to complete SS.304

NO.S.S.304 WILL NOT STAND WITH HEIGHT TEMPERATURE SERVICE

THANKS AND REGARDS

SUSHIL GAUR

M.NO.9530278378

On Sat, Nov 6, 2021 at 7:19 PM uday prabhu <uday31@gmail.com> wrote:

Dear Experts,

Vessel MOC = SA387 GR F11 CL2 + 3mm SS.304 clading
Max operating Temp = 425 C
Max Pr = 20 bar (g)

Can we replace above moc with SS.304.
Will there be Sensitization issues a this temp ??

Regards,

Uday Prabhu

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sushil gaur

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