Materials & Welding: May 2016

Tuesday, May 31, 2016

Re: [MW:24917] Min BHN value

Try in B31.3. If not only in scientific publications relevant to creep resistance. For P91 the bibliography us giving 191HV minimum after PWHT

Sent from my BlackBerry 10 smartphone.

From: samaran sadasivam

Sent: Κυριακή, 29 Μαΐου 2016 - 13:32

To: materials-welding@googlegroups.com

Reply To: materials-welding@googlegroups.com

Subject: [MW:24902] Min BHN value

Dear Experts,

What is the minimum hardness value for alloy steel pipe material(A335 P11,P22,P5) and which code have to refer. Our contract documents specifies max. BHN value only. So, pls tell me the details.

Thanks & Regards

S.Samaran

+91 9486664977

Re: [MW:24918] Re: Problems for SS304 legs on SS904L vessel?

Iron contamination is related with destruction of surface Cr oxide. No risk in your case, just grind and pickle as usual

Sent from my BlackBerry 10 smartphone.

From: Makrand Sakpal

Sent: Δευτέρα, 30 Μαΐου 2016 - 12:51

To: Materials & Welding

Reply To: materials-welding@googlegroups.com

Subject: Re: [MW:24907] Re: Problems for SS304 legs on SS904L vessel?

Dear all,

Thanks for your inputs.

This tank we are using for food storage (Extreme Hygienic).

Please tell me what are the issues if we weld SS904L with SS304? SS904L have low carbon while SS304 is having high carbon content.

Will there be any issue of iron contamination in future which may be non-hygienic for food applications?

On Saturday, 28 May 2016 08:25:22 UTC+5:30, George Dilintas wrote:

no problem with 308 in that case

2016-05-26 20:29 GMT+03:00 Mohd Siraj <mohd...@gmail.com>:
what filler to be used for joining?

is 308L is okey?

On Tuesday, May 24, 2016 at 8:50:43 PM UTC-7, Makrand Sakpal wrote:
Dears,

We have one atmospheric hygienic (Food Industry) vertical vessel of SS904L material which is supported on legs. Vessel diameter is 3200 mm & TL-TL is 5100 mm.

The question is, can we weld SS304 directly on SS904L so that we can use SA-312 TP304 pipe l;eg supports?

Is it necessary to have SS904L RF pad instead of SS304?

Can there be an issue with weldability of SS904L with SS304?

Note : - We can't go for skirt support option.

--
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--
Dr. Georgios Dilintas,
Dipl. Ing. In Aeronautic and Space Engineering
Ph.D in Mechanics of Solids - Computational Mechanics
A.I.S, A.N.I, IRCA Lead Auditor
Welding, Stress Analysis, Corrosion, QA/QC, Failure Analysis, Risk Analysis

Re: [MW:24920] PWHT req in dissimilar material welding

Codes are not handbooks. Metallurgy knowledge is necessary.

In general CS needs to be buttered with an alloy which is not sensitive to sensitization from one part and from the other part does not give low FW. Then PWHT is performed and then SS us welded

Sent from my BlackBerry 10 smartphone.

From: Kumar Sajesh

Sent: Κυριακή, 29 Μαΐου 2016 - 16:02

To: materials-welding@googlegroups.com

Reply To: materials-welding@googlegroups.com

Subject: [MW:24903] PWHT req in dissimilar material welding

hi,

in a dissimilar welding between CS and SS, and if CS have PWHT requirement, what shall we do.

any code referances?

Regards,

Sajesh Kumar S

Re: [MW:24916] Combination of PQRs

As you stated , to combine 2 PQRs and generate a new WPS, your PQRs should be performed with material greater than 13mm.

2016-05-31 11:14 GMT+03:00 Demir Alp ILIKOBA <demiralp85@gmail.com>:

Dear Experts;

I would like to get your professional opinion on combination of PQRs as per ASME Section IX QW-200.4   I have 2 PQRs (w/back-gouging) and I would like to combine these 2 PQRs ;

·         PQR-1 Base Metal P355 GH Thickness : 8mm Process 1)Root : SMAW 2)Hot-Fill-Cap : SAW Back Weld: SAW

·         PQR-2 Base Metal P355 GH Thickness : 8mm Process 1)Root : SMAW 2)Hot-Fill-Cap : SMAW Back Weld: SMAW

My question is whether i can combine these 2 PQR for generating a new WPS ;

·         Generated WPS : Base Metal Thickness : 16mm Process 1)Root : SMAW 2)Hot-Fill-Cap : SAW Back Weld: SMAW

Is it possible to use PQR-1 & PQR-2 for generating WPS for usage of SMAW for the back weld ? What bothers me and makes me feel i should get advisory is since QW-200.4 (b) says; For GTAW, SMAW, GMAW, PAW, and SAW, or combinations of these processes, a PQR for a process recording a test coupon that was at least 1/2 in. (13 mm) thick may be combined with one or more other PQRs recording another welding process and any greater base metal thickness. Since my PQRs are carried out with 8mm thck. is it possible for me to combine them and apply SMAW Back Weld instead of SAW or not?

Best Regards;

Demir

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Saygılarımla / Regards

Tuğrulhan ÖZDEMİR

API 653 AI, Welding & Materials Eng.

ASNT VT, PT, MT, RT L-II

+90 539 747 2676

[MW:24915] Combination of PQRs

Dear Experts;

I would like to get your professional opinion on combination of PQRs as per ASME Section IX QW-200.4 I have 2 PQRs (w/back-gouging) and I would like to combine these 2 PQRs ;

· PQR-1 Base Metal P355 GH Thickness : 8mm Process 1)Root : SMAW 2)Hot-Fill-Cap : SAW Back Weld: SAW

· PQR-2 Base Metal P355 GH Thickness : 8mm Process 1)Root : SMAW 2)Hot-Fill-Cap : SMAW Back Weld: SMAW

My question is whether i can combine these 2 PQR for generating a new WPS ;

· Generated WPS : Base Metal Thickness : 16mm Process 1)Root : SMAW 2)Hot-Fill-Cap : SAW Back Weld: SMAW

Is it possible to use PQR-1 & PQR-2 for generating WPS for usage of SMAW for the back weld ? What bothers me and makes me feel i should get advisory is since QW-200.4 (b) says; For GTAW, SMAW, GMAW, PAW, and SAW, or combinations of these processes, a PQR for a process recording a test coupon that was at least 1/2 in. (13 mm) thick may be combined with one or more other PQRs recording another welding process and any greater base metal thickness. Since my PQRs are carried out with 8mm thck. is it possible for me to combine them and apply SMAW Back Weld instead of SAW or not?

Best Regards;

Demir

RE: [MW:24914] RE: 24908] IS 2062 safe working temperature

Hi Kadir,

For pressure of 5Bar, you may define the thickness for IS 2062 based on dia, loadings on the vessel, and any more factors dictated by client spec,

However for MOC (Chemical composition) we have to consider so many other parameters also like as…

1. Fluid in service / Storage.

2. Atmospheric conditions.

3. Client specifications.

4. Design life / No.of years for service…

5. Any weight limitations..

6. Application (like as surge tanks i.e periodical loadings and to absorb surge pressures)…

7. And as you required temperature also…

As per IS 2062 –

And as per your statement 160Deg C is a high temperature application, better you may refer ASTM A 515…

(though a very negligible difference between these in chemical composition, but you can confidently design and work with ASTM A 515)

Hope it is clear to you

Thanks & Regards,

Lakshman Kumar B,

+91 9440031459.

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Kadir godil
Sent: Monday, May 30, 2016 8:18 PM
To: materials-welding@googlegroups.com
Subject: Re: [MW:24910] RE: 24908] IS 2062 safe working temperature

its a vessel, max temperature will be 160 deg. C and pressure will be 5 Bar..

is there any standard or reference document which mentions its safe working temperature?

On Mon, May 30, 2016 at 6:13 PM, Lakshman Kumar. B <lakshmankumar4@gmail.com> wrote:

For which application and in which form?

Thanks & Regards,
Lakshman Kumar B,
+91 9440031459.

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Kadir godil
Sent: Monday, May 30, 2016 5:29 PM
To: Materials & Welding <materials-welding@googlegroups.com>
Subject: [MW:24908] IS 2062 safe working temperature

dear experts,

what is the safe working range of IS 2062 steel?

please inform me about the standard where i can find this data?

thank you

sincerely,
kadir godil
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Re: [MW:24913] RE: 24908] IS 2062 safe working temperature

dear experts

thank you very much..

On Tue, May 31, 2016 at 9:12 AM, MW <raghurambathula@gmail.com> wrote:

up to 343 °C for ASME Sec VIII div1 vessels (not permitted for Section I and III)

On Tuesday, 31 May 2016 07:35:09 UTC+4, Kadir godil wrote:
its a vessel, max temperature will be 160 deg. C and pressure will be 5 Bar..

is there any standard or reference document which mentions its safe working temperature?

On Mon, May 30, 2016 at 6:13 PM, Lakshman Kumar. B <lakshmankumar4@gmail.com> wrote:
For which application and in which form?

Thanks & Regards,
Lakshman Kumar B,
+91 9440031459.

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Kadir godil
Sent: Monday, May 30, 2016 5:29 PM
To: Materials & Welding <materials-welding@googlegroups.com>
Subject: [MW:24908] IS 2062 safe working temperature

dear experts,

what is the safe working range of IS 2062 steel?

please inform me about the standard where i can find this data?

thank you

sincerely,
kadir godil

--
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
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Re: [MW:24913] RE: 24908] IS 2062 safe working temperature

up to 343 °C for ASME Sec VIII div1 vessels (not permitted for Section I and III)

On Tuesday, 31 May 2016 07:35:09 UTC+4, Kadir godil wrote:

its a vessel, max temperature will be 160 deg. C and pressure will be 5 Bar..

is there any standard or reference document which mentions its safe working temperature?

On Mon, May 30, 2016 at 6:13 PM, Lakshman Kumar. B <lakshmankumar4@gmail.com> wrote:
For which application and in which form?

Thanks & Regards,
Lakshman Kumar B,
+91 9440031459.

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Kadir godil
Sent: Monday, May 30, 2016 5:29 PM
To: Materials & Welding <materials-welding@googlegroups.com>
Subject: [MW:24908] IS 2062 safe working temperature

dear experts,

what is the safe working range of IS 2062 steel?

please inform me about the standard where i can find this data?

thank you

sincerely,
kadir godil

Monday, May 30, 2016

Re: [MW:24910] IS 2062 safe working temperature

IS2062 Grade E410 B0 can be used upto zero degree celcius and max 300 degree celcius.

Quality C can be used to as low as minus 20 degree Celcius.

PREM S NAUTIYAL
CELL : 9769316004

From: Kadir godil <kadirgodil@gmail.com>
Sent: Mon, 30 May 2016 18:09:03
To: Materials & Welding <materials-welding@googlegroups.com>
Subject: [MW:24908] IS 2062 safe working temperature

dear experts,

what is the safe working range of IS 2062 steel?

please inform me about the standard where i can find this data?

thank you

sincerely,

kadir godil

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Re: [MW:24910] RE: 24908] IS 2062 safe working temperature

its a vessel, max temperature will be 160 deg. C and pressure will be 5 Bar..

is there any standard or reference document which mentions its safe working temperature?

On Mon, May 30, 2016 at 6:13 PM, Lakshman Kumar. B <lakshmankumar4@gmail.com> wrote:

For which application and in which form?

Thanks & Regards,
Lakshman Kumar B,
+91 9440031459.

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Kadir godil
Sent: Monday, May 30, 2016 5:29 PM
To: Materials & Welding <materials-welding@googlegroups.com>
Subject: [MW:24908] IS 2062 safe working temperature

dear experts,

what is the safe working range of IS 2062 steel?

please inform me about the standard where i can find this data?

thank you

sincerely,
kadir godil
--
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The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
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[MW:24909] RE: 24908] IS 2062 safe working temperature

For which application and in which form?

Thanks & Regards,

Lakshman Kumar B,

+91 9440031459.

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Kadir godil
Sent: Monday, May 30, 2016 5:29 PM
To: Materials & Welding <materials-welding@googlegroups.com>
Subject: [MW:24908] IS 2062 safe working temperature

dear experts,

what is the safe working range of IS 2062 steel?

please inform me about the standard where i can find this data?

thank you

sincerely,

kadir godil

[MW:24908] IS 2062 safe working temperature

dear experts,

what is the safe working range of IS 2062 steel?

please inform me about the standard where i can find this data?

thank you

sincerely,

kadir godil

Re: [MW:24907] Re: Problems for SS304 legs on SS904L vessel?

Dear all,

Thanks for your inputs.

This tank we are using for food storage (Extreme Hygienic).

Please tell me what are the issues if we weld SS904L with SS304? SS904L have low carbon while SS304 is having high carbon content.

Will there be any issue of iron contamination in future which may be non-hygienic for food applications?

On Saturday, 28 May 2016 08:25:22 UTC+5:30, George Dilintas wrote:

no problem with 308 in that case

2016-05-26 20:29 GMT+03:00 Mohd Siraj <mohd...@gmail.com>:
what filler to be used for joining?

is 308L is okey?

On Tuesday, May 24, 2016 at 8:50:43 PM UTC-7, Makrand Sakpal wrote:
Dears,

We have one atmospheric hygienic (Food Industry) vertical vessel of SS904L material which is supported on legs. Vessel diameter is 3200 mm & TL-TL is 5100 mm.

The question is, can we weld SS304 directly on SS904L so that we can use SA-312 TP304 pipe l;eg supports?

Is it necessary to have SS904L RF pad instead of SS304?

Can there be an issue with weldability of SS904L with SS304?

Note : - We can't go for skirt support option.

--
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
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--
Dr. Georgios Dilintas,
Dipl. Ing. In Aeronautic and Space Engineering
Ph.D in Mechanics of Solids - Computational Mechanics
A.I.S, A.N.I, IRCA Lead Auditor
Welding, Stress Analysis, Corrosion, QA/QC, Failure Analysis, Risk Analysis

[MW:24906] BOLT& NUTS CONCERNS

Dear All.

There are some issues and concerns about bolt and nuts:(please mentioned reference document)

1.If the ring gaskets are lubricated and bolt tightening have been done and no leaks observed during hydro testing, is it accepted or not?if not flanges must loose?

2.Unfortunately after tightening, C.S bolts and nuts are painted.is there a document that painting forbidden or not (especially for sour service)?

3.B7M bolt and nut have rusted before tightening, are they must be derusted or not& how?rusting can affect on torque value? and regard to any leakage observed can be assured that min required tension are applied on bolts?

4.Is there a technical document that investigate effectiveness of Hammer tightening vs. of wrench and tensioner?

Regards.

Sunday, May 29, 2016

Re: [MW:24904] PWHT req in dissimilar material welding

Construction Code?

El 29/05/2016 08:02, "Kumar Sajesh" <sajesh2185@gmail.com> escribió:

hi,

in a dissimilar welding between CS and SS, and if CS have PWHT requirement, what shall we do.
any code referances?

--
Regards,

Sajesh Kumar S

--
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The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
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[MW:24904] RE: 24903] PWHT req in dissimilar material welding

U can carry out PWHT as per table UCS 56.1 - Decrease the temperature & increase the soaking time.

From: Kumar Sajesh
Sent: ‎29-‎05-‎2016 06:32 PM
To: materials-welding@googlegroups.com
Subject: [MW:24903] PWHT req in dissimilar material welding

hi,

in a dissimilar welding between CS and SS, and if CS have PWHT requirement, what shall we do.

any code referances?

Regards,

Sajesh Kumar S

[MW:24903] PWHT req in dissimilar material welding

hi,

in a dissimilar welding between CS and SS, and if CS have PWHT requirement, what shall we do.

any code referances?

Regards,

Sajesh Kumar S

[MW:24902] Min BHN value

Dear Experts,

What is the minimum hardness value for alloy steel pipe material(A335 P11,P22,P5) and which code have to refer. Our contract documents specifies max. BHN value only. So, pls tell me the details.

Thanks & Regards

S.Samaran

+91 9486664977

Saturday, May 28, 2016

RE: [MW:24901] RE: 24837] welding of cladded (alloy 625) pipes with single side access

Just forget it. You can’t deposit Carbon Steel on the top of 625 weld deposit. Welds will simply crack. Stay with 625 deposit all the way. That’ one of the problem on single sided welding of 625 clad pipes. What’s the thickness of the pipes involved and the design specification???

Thanks.

Pradip Goswami, P.Eng,IWE
Independent Welding & Metallurgical Engineering Specialist & Consultant.
Ontario,Canada.
ca.linkedin.com/pub/pradip-goswami/5/985/299

pgoswami@quickclic.net

pradip.goswami@gmail.com

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Himan Nikdin
Sent: Friday, May 27, 2016 11:42 AM
To: materials-welding@googlegroups.com
Subject: RE: [MW:24896] RE: 24837] welding of cladded (alloy 625) pipes with single side access

Dear Pardip

Thanks for your help and sending that practical guide my proposal is;

Buttering of the edge of joint up to 1/3 of pipe thickness by INCONEL 625 filer (ENiCrMo-3 /ERNiCrMo-3), then continue welding of root pass by INCONEL 625, after completion of root pass fill and cap the joint by carbon steel electrode/filer.

what do you think about it?

Regards,

Himan Nikdin

From: pgoswami@quickclic.net
To: materials-welding@googlegroups.com
CC: himan.nikdin@outlook.com
Subject: [MW:24860] RE: 24837] welding of cladded (alloy 625) pipes with single side access
Date: Wed, 25 May 2016 00:13:24 -0400

Hi Himan,

Please see the practical guideline for your reference. The highlighted texts would be helpful. Feel free to ask if have any clarifications. For single sided FP welds, ER-NiCrMo-3(625 type) consumables are the only options.

Thanks.

Pradip Goswami, P.Eng,IWE
Independent Welding & Metallurgical Engineering Specialist & Consultant.
Ontario,Canada.
ca.linkedin.com/pub/pradip-goswami/5/985/299

pgoswami@quickclic.net

pradip.goswami@gmail.com

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Himan Nikdin
Sent: Tuesday, May 24, 2016 4:10 AM
To: materials-welding@googlegroups.com
Subject: [MW:24837] welding of cladded (alloy 625) pipes with single side access

Dear Experts

I need a practical guide or sample WPS for welding of cladded (alloy 625) carbon steel pipes with one side access. the size of pipes are minimum 4".

Regards,

H.Nikdin

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Materials & Welding

Tuesday, May 31, 2016

Re: [MW:24917] Min BHN value

Re: [MW:24918] Re: Problems for SS304 legs on SS904L vessel?

Re: [MW:24920] PWHT req in dissimilar material welding

Re: [MW:24916] Combination of PQRs

[MW:24915] Combination of PQRs

RE: [MW:24914] RE: 24908] IS 2062 safe working temperature

Re: [MW:24913] RE: 24908] IS 2062 safe working temperature

Re: [MW:24913] RE: 24908] IS 2062 safe working temperature

Monday, May 30, 2016

Re: [MW:24910] IS 2062 safe working temperature

Re: [MW:24910] RE: 24908] IS 2062 safe working temperature

[MW:24909] RE: 24908] IS 2062 safe working temperature

[MW:24908] IS 2062 safe working temperature

Re: [MW:24907] Re: Problems for SS304 legs on SS904L vessel?

[MW:24906] BOLT& NUTS CONCERNS

Sunday, May 29, 2016

Re: [MW:24904] PWHT req in dissimilar material welding

[MW:24904] RE: 24903] PWHT req in dissimilar material welding

[MW:24903] PWHT req in dissimilar material welding

[MW:24902] Min BHN value

Saturday, May 28, 2016

RE: [MW:24901] RE: 24837] welding of cladded (alloy 625) pipes with single side access

[MW:35346] Cast-iron welding

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