Re: [MW:34662] Re: Pitting Corrosion Test ASTM G48 Method A for SS 316L Materials

Just to share. Below snap shot.

Thanks & Regards

J.Gerald Jayakumar

On Thursday, 30 November, 2023 at 02:18:30 pm IST, james gerald <gerry_tup@yahoo.com> wrote:

This seems surprising Client specification calling for G48A Terst for 316L. What is the service and what is the level of Chloride ppm in service. What is the PREN requirement.

Please share the Snap shot of Client spec.

Tn Wednesday, 29 November, 2023 at 07:19:44 pm IST, Stephenraj <arokkiyaraj@gmail.com> wrote:

It is raw material Seam less 316L pipe 

On Wed, Nov 29, 2023, 12:05 Ashish Chacko <iamashleo007@gmail.com> wrote:

Can u let us know what was the type of material pipe or plate or whether it was welded?

On Tuesday, 28 November 2023 at 20:18:54 UTC+3 stephen raj wrote:

Dear Sir,

For SS316L material, we performed the Pitting Corrosion Test ASTM G48 Method A in accordance with the client's specifications and acceptance criteria, and we followed ISO 17781 standards in accordance with the client's standard reference.


We failed the test, and the weight reduction ranged from 50 to 500 g. It should be 1g according to the standard.


Can somebody advise or explain why this test failed?

BR

Stephenraj.s

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Re: [MW:34662] Re: Pitting Corrosion Test ASTM G48 Method A for SS 316L Materials

This seems surprising Client specification calling for G48A Terst for 316L. What is the service and what is the level of Chloride ppm in service. What is the PREN requirement.

Please share the Snap shot of Client spec.

Tn Wednesday, 29 November, 2023 at 07:19:44 pm IST, Stephenraj <arokkiyaraj@gmail.com> wrote:

It is raw material Seam less 316L pipe 

On Wed, Nov 29, 2023, 12:05 Ashish Chacko <iamashleo007@gmail.com> wrote:

Can u let us know what was the type of material pipe or plate or whether it was welded?

On Tuesday, 28 November 2023 at 20:18:54 UTC+3 stephen raj wrote:

Dear Sir,

For SS316L material, we performed the Pitting Corrosion Test ASTM G48 Method A in accordance with the client's specifications and acceptance criteria, and we followed ISO 17781 standards in accordance with the client's standard reference.


We failed the test, and the weight reduction ranged from 50 to 500 g. It should be 1g according to the standard.


Can somebody advise or explain why this test failed?

BR

Stephenraj.s

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[MW:34662] Repair Procedure Qualifications record (PQR) for P1 materia

Dear experts, 

I need a sample Repair Procedure Qualifications record for P1 material with impact requirements.

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Vipin Viswanath

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RE: [MW:34661] Re: Pitting Corrosion Test ASTM G48 Method A for SS 316L Materials

ASTM G48A test is a very aggressive test. It's like a Go-No Go test, with respect to Pitting. Usually, this test is not called for in SS 316L. For all Offshore Oil & Gas application usually  this test is called for Duplex & Super Duplex Grades , 6Mo & Alloy 625.

 

The temperature and the duration of the test are important. See the temperature of the test to be adopted vs the duration in the ASTM G48A specification.

 

Typically, if one tries to exercise the common conditions for testing on DSS/ SDSS on SS 316L then Failures are inevitable. It's good to know why this test is called for on SS 316L and what's the intended service? Please ask your client.  If the intended service is offshore , then the testing temperature & duration should be the least applicable as per ASTM G48A.

 

Generally speaking, ASTM, A 262, Practice E or C are the recommended corrosion tests for SS 316L.

 

Refer the attached blogs for some additional guidance.

 

Thanks.

 

 

Pradip Goswami.P.Eng, IWE.

Welding & Metallurgical Engineering Specialist

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 Stephenraj
Sent: Wednesday, November 29, 2023 4:10 AM
To: materials-welding@googlegroups.com
Subject: Re: [MW:34659] Re: Pitting Corrosion Test ASTM G48 Method A for SS 316L Materials

 

It is raw material Seam less 316L pipe 

 

On Wed, Nov 29, 2023, 12:05 Ashish Chacko <iamashleo007@gmail.com> wrote:

Can u let us know what was the type of material pipe or plate or whether it was welded?

On Tuesday, 28 November 2023 at 20:18:54 UTC+3 stephen raj wrote:

Dear Sir,

For SS316L material, we performed the Pitting Corrosion Test ASTM G48 Method A in accordance with the client's specifications and acceptance criteria, and we followed ISO 17781 standards in accordance with the client's standard reference.


We failed the test, and the weight reduction ranged from 50 to 500 g. It should be 1g according to the standard.


Can somebody advise or explain why this test failed?

 

BR

 

Stephenraj.s

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Virus-free.www.avg.com

Re: [MW:34659] Re: Pitting Corrosion Test ASTM G48 Method A for SS 316L Materials

Raw material Plate or pipe  will be tested in the Mill before procuring. My assumption is to be PQR test coupon

Thanks & Regards

J.Gerald Jayakumar

On Wednesday, 29 November, 2023 at 02:35:50 pm IST, Ashish Chacko <iamashleo007@gmail.com> wrote:

Can u let us know what was the type of material pipe or plate or whether it was welded?

On Tuesday, 28 November 2023 at 20:18:54 UTC+3 stephen raj wrote:

Dear Sir,

For SS316L material, we performed the Pitting Corrosion Test ASTM G48 Method A in accordance with the client's specifications and acceptance criteria, and we followed ISO 17781 standards in accordance with the client's standard reference.


We failed the test, and the weight reduction ranged from 50 to 500 g. It should be 1g according to the standard.


Can somebody advise or explain why this test failed?

BR

Stephenraj.s

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.

Re: [MW:34659] Re: Pitting Corrosion Test ASTM G48 Method A for SS 316L Materials

It is raw material Seam less 316L pipe 

On Wed, Nov 29, 2023, 12:05 Ashish Chacko <iamashleo007@gmail.com> wrote:

Can u let us know what was the type of material pipe or plate or whether it was welded?

On Tuesday, 28 November 2023 at 20:18:54 UTC+3 stephen raj wrote:

Dear Sir,

For SS316L material, we performed the Pitting Corrosion Test ASTM G48 Method A in accordance with the client's specifications and acceptance criteria, and we followed ISO 17781 standards in accordance with the client's standard reference.


We failed the test, and the weight reduction ranged from 50 to 500 g. It should be 1g according to the standard.


Can somebody advise or explain why this test failed?

BR

Stephenraj.s

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Re: [MW:34655] Pitting Corrosion Test ASTM G48 Method A for SS 316L Materials

What is the Testing temperature, normally 316L is suitable at 10degC.

If the root is oxidised due to inadequate purging, there may be a possibility

Thanks & Regards

J.Gerald Jayakumar

On Tuesday, 28 November, 2023 at 10:48:45 pm IST, stephen raj <arokkiyaraj@gmail.com> wrote:

Dear Sir,

For SS316L material, we performed the Pitting Corrosion Test ASTM G48 Method A in accordance with the client's specifications and acceptance criteria, and we followed ISO 17781 standards in accordance with the client's standard reference.


We failed the test, and the weight reduction ranged from 50 to 500 g. It should be 1g according to the standard.


Can somebody advise or explain why this test failed?

BR

Stephenraj.s

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Re: [MW:34655] SA 541 GR 3 CL 2

SA 541 seems to be like Forging

On Tuesday, 28 November, 2023 at 10:48:45 pm IST, Vishwas Keskar Welding Manager WELDING <vvkeskar123@gmail.com> wrote:

Experts

Pl. guide for Welding  consumables  compatible for SA 541GR 3 CL 2 pressure vessel plate  butt welding and fillet welding .

Also advice on PWHT time and temperature

Thanks

VISHWAS IWE

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Re: [MW:34655] SA 541 GR 3 CL 2

Please try E9018D1 / E9018M

Tempering temperature/SR    :  620degC

Time depends on Applicable code and thickness

Thanks & Regards

J.Gerald Jayakumar

On Tuesday, 28 November, 2023 at 10:48:45 pm IST, Vishwas Keskar Welding Manager WELDING <vvkeskar123@gmail.com> wrote:

Experts

Pl. guide for Welding  consumables  compatible for SA 541GR 3 CL 2 pressure vessel plate  butt welding and fillet welding .

Also advice on PWHT time and temperature

Thanks

VISHWAS IWE

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[MW:34655] Re: Pitting Corrosion Test ASTM G48 Method A for SS 316L Materials

Can u let us know what was the type of material pipe or plate or whether it was welded?

On Tuesday, 28 November 2023 at 20:18:54 UTC+3 stephen raj wrote:

Dear Sir,

For SS316L material, we performed the Pitting Corrosion Test ASTM G48 Method A in accordance with the client's specifications and acceptance criteria, and we followed ISO 17781 standards in accordance with the client's standard reference.


We failed the test, and the weight reduction ranged from 50 to 500 g. It should be 1g according to the standard.


Can somebody advise or explain why this test failed?

BR

Stephenraj.s

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[MW:34651] Pitting Corrosion Test ASTM G48 Method A for SS 316L Materials

Dear Sir,

For SS316L material, we performed the Pitting Corrosion Test ASTM G48 Method A in accordance with the client's specifications and acceptance criteria, and we followed ISO 17781 standards in accordance with the client's standard reference.


We failed the test, and the weight reduction ranged from 50 to 500 g. It should be 1g according to the standard.


Can somebody advise or explain why this test failed?

BR

Stephenraj.s

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Re: [MW:34651] Filler

Just to add. You need to Qualify a new PQR for change in shielding gas composition as per ASME Sec.IX

Thanks & Regards

J.Gerald Jayakumar

On Monday, 27 November, 2023 at 03:57:37 pm IST, james gerald <gerry_tup@yahoo.com> wrote:

E71T-1C & E71T-1M  have the same chemical composition and Mechanical and the point to consider when using CO2 0r Ar-CO2 mixture is to ensure that the mechanical properties are verified by using the same shielding Gas combination in the consumable certificate which will be available with consumable supplier for the required Lot Number.

Some snap shots of ASME Sec.IIC below.

Thanks & Regards

J.Gerald Jayakumar

On Sunday, 26 November, 2023 at 05:02:40 pm IST, Vinoth Rajendran <rajvinoth1987@gmail.com> wrote:

Hi team,

If using E71T-1C, pls go with 100% CO2 only if you won't need to meet any physical properties,

 if using E71T-1M, pls go with Mixture Argon + CO2 (Ar. 80%+CO2 20%) or (Ar. 98%+O2 2%) only if you want to meet physical properties...

Thanks 

Vinoth. R

On Sun, Nov 26, 2023, 16:45 <amitk@talakeel.com> wrote:

E71T stands for flux core wire or tubular electrodes as per AWS. C stands for carbon dioxide as shielding gas and M stands for Argon+CO2 as shielding gas general (70+30)% or (75+25)% respectively.

 

From: materials-welding@googlegroups.com <materials-welding@googlegroups.com> On Behalf Of Kannayeram Gnanapandithan
Sent: Friday, November 24, 2023 7:46 PM
To: materials-welding <materials-welding@googlegroups.com>
Subject: Re: [MW:34646] Filler

 

both are except usage of shielding gas. C- For 100%CO2. M- Mixed gas. example Argon plus Co2 etc

 

On Fri, Nov 24, 2023, 9:16 PM Elayaraja Thangarasu <elayaraja1312@gmail.com> wrote:

Dear All.

 

 What is the difference E71T-1C and E71T-1M.

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Re: [MW:34651] Filler

E71T-1C & E71T-1M  have the same chemical composition and Mechanical and the point to consider when using CO2 0r Ar-CO2 mixture is to ensure that the mechanical properties are verified by using the same shielding Gas combination in the consumable certificate which will be available with consumable supplier for the required Lot Number.

Some snap shots of ASME Sec.IIC below.

Thanks & Regards

J.Gerald Jayakumar

On Sunday, 26 November, 2023 at 05:02:40 pm IST, Vinoth Rajendran <rajvinoth1987@gmail.com> wrote:

Hi team,

If using E71T-1C, pls go with 100% CO2 only if you won't need to meet any physical properties,

 if using E71T-1M, pls go with Mixture Argon + CO2 (Ar. 80%+CO2 20%) or (Ar. 98%+O2 2%) only if you want to meet physical properties...

Thanks 

Vinoth. R

On Sun, Nov 26, 2023, 16:45 <amitk@talakeel.com> wrote:

E71T stands for flux core wire or tubular electrodes as per AWS. C stands for carbon dioxide as shielding gas and M stands for Argon+CO2 as shielding gas general (70+30)% or (75+25)% respectively.

 

From: materials-welding@googlegroups.com <materials-welding@googlegroups.com> On Behalf Of Kannayeram Gnanapandithan
Sent: Friday, November 24, 2023 7:46 PM
To: materials-welding <materials-welding@googlegroups.com>
Subject: Re: [MW:34646] Filler

 

both are except usage of shielding gas. C- For 100%CO2. M- Mixed gas. example Argon plus Co2 etc

 

On Fri, Nov 24, 2023, 9:16 PM Elayaraja Thangarasu <elayaraja1312@gmail.com> wrote:

Dear All.

 

 What is the difference E71T-1C and E71T-1M.

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[MW:34651] SA 541 GR 3 CL 2

Experts

Pl. guide for Welding  consumables  compatible for SA 541GR 3 CL 2 pressure vessel plate  butt welding and fillet welding .

Also advice on PWHT time and temperature

Thanks

VISHWAS IWE

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Re: [MW:34650] Filler

Hi team,

If using E71T-1C, pls go with 100% CO2 only if you won't need to meet any physical properties,

 if using E71T-1M, pls go with Mixture Argon + CO2 (Ar. 80%+CO2 20%) or (Ar. 98%+O2 2%) only if you want to meet physical properties...

Thanks 

Vinoth. R

On Sun, Nov 26, 2023, 16:45 <amitk@talakeel.com> wrote:

E71T stands for flux core wire or tubular electrodes as per AWS. C stands for carbon dioxide as shielding gas and M stands for Argon+CO2 as shielding gas general (70+30)% or (75+25)% respectively.

 

From: materials-welding@googlegroups.com <materials-welding@googlegroups.com> On Behalf Of Kannayeram Gnanapandithan
Sent: Friday, November 24, 2023 7:46 PM
To: materials-welding <materials-welding@googlegroups.com>
Subject: Re: [MW:34646] Filler

 

both are except usage of shielding gas. C- For 100%CO2. M- Mixed gas. example Argon plus Co2 etc

 

On Fri, Nov 24, 2023, 9:16 PM Elayaraja Thangarasu <elayaraja1312@gmail.com> wrote:

Dear All.

 

 What is the difference E71T-1C and E71T-1M.

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Re: [MW:34648] Filler

Dear Sir,

   While welding E71T-1C using Agron+CO2 gas any problem.

On Fri, 24 Nov, 2023, 20:51 Kannayeram Gnanapandithan, <kgpandithan@gmail.com> wrote:

both are except usage of shielding gas. C- For 100%CO2. M- Mixed gas. example Argon plus Co2 etc

On Fri, Nov 24, 2023, 9:16 PM Elayaraja Thangarasu <elayaraja1312@gmail.com> wrote:

Dear All.

 What is the difference E71T-1C and E71T-1M.

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RE: [MW:34648] Filler

E71T stands for flux core wire or tubular electrodes as per AWS. C stands for carbon dioxide as shielding gas and M stands for Argon+CO2 as shielding gas general (70+30)% or (75+25)% respectively.

 

From: materials-welding@googlegroups.com <materials-welding@googlegroups.com> On Behalf Of Kannayeram Gnanapandithan
Sent: Friday, November 24, 2023 7:46 PM
To: materials-welding <materials-welding@googlegroups.com>
Subject: Re: [MW:34646] Filler

 

both are except usage of shielding gas. C- For 100%CO2. M- Mixed gas. example Argon plus Co2 etc

 

On Fri, Nov 24, 2023, 9:16 PM Elayaraja Thangarasu <elayaraja1312@gmail.com> wrote:

Dear All.

 

 What is the difference E71T-1C and E71T-1M.

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Re: [MW:34646] QW-217 (b)

orginal cladding done by weld overly or anyother methods 

On Fri, Nov 24, 2023, 5:28 PM Emil Tahirzade <emiltahirzade@gmail.com> wrote:

Dear All,

I want to clarify below mentioned case for which I would like to have your valuable comments:

Case: clad equipment - Base material- CS (P1) 25mm thck,

clad material -- SS 316L , 3 mm thck,

clad provided for corrosion, not included in the design calculation

Welding qualification carried out separately: 1) for base material CS (P1)  2) for restoration of cladding overlay procedure done on CS(P1) for 316L weld. 

 Are these WPSs okay as per QW-217 (b) requirements?

Unfortunately, our ASME AI doesn't agree with me about the second one WPS which cladding overlay with 316L filler material on CS(P1). He says we should prepare WPS for cladding 316L filler material on SS(P8) instead of CS(P1). 

What do you think about it?

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Re: [MW:34646] Filler

both are except usage of shielding gas. C- For 100%CO2. M- Mixed gas. example Argon plus Co2 etc

On Fri, Nov 24, 2023, 9:16 PM Elayaraja Thangarasu <elayaraja1312@gmail.com> wrote:

Dear All.

 What is the difference E71T-1C and E71T-1M.

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[MW:34645] Filler

Dear All.

 What is the difference E71T-1C and E71T-1M.

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Re: [MW:34641] Interpass Temprature

asme sec 1

On Fri, Nov 24, 2023, 5:28 PM Ashish Chacko <iamashleo007@gmail.com> wrote:

Dear Sirs,

I have inquiries regarding the comprehension of interpass temperature in ASME :

1. 1)What code reference is used to ascertain the maximum interpass temperature?
2. 2)What code reference is employed to establish the interpass temperature for dissimilar welds, such as CS to SS welds?

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Re: [MW:34641] Interpretation QW202.2 b

yes, Maximum to be welded because test coupen thickness is 40mm

On Fri, Nov 24, 2023, 5:28 PM SANJAY SINGH <sanjay.kharwar349@gmail.com> wrote:

Dear One and All ,

               Please let me know QW 202 .2 b  actual interpretation  for partial penetration .

I have WPS  with Base metal thickness of 40 mm then whether it qualifies for partial weld groove above 200 mm Thk. base metal thickness also .

Regards 

Sanjay 

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Re: [MW:34641] QW-217 (b)

In your case Method B is acceptable in line with QW217 .
Pl speak to AI and show the clause with Code
Sent from my iPhone

> On 24-Nov-2023, at 5:28 PM, Emil Tahirzade <emiltahirzade@gmail.com> wrote:
>
> it?

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Re: [MW:34641] Interpretation QW202.2 b

40 mm PQR test coupon 

Then there is no limit for partial penetration groove welding  base metal thickness limitation

Sent from my iPhone

On 24-Nov-2023, at 5:28 PM, SANJAY SINGH <sanjay.kharwar349@gmail.com> wrote:



Dear One and All ,

               Please let me know QW 202 .2 b  actual interpretation  for partial penetration .

I have WPS  with Base metal thickness of 40 mm then whether it qualifies for partial weld groove above 200 mm Thk. base metal thickness also .

<image.png>

Regards 

Sanjay 

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