Materials & Welding: Re: [BULK] [MW:27678] Stainless steel (SA 312 TP 316L) welding

all this when MDMT is colder that -196degC and if the base metal is 316L and if the process is GTAW or GMAW

2018-04-11 8:34 GMT+03:00 Ramesh <rameshkannandevaraj@gmail.com>:

Hi
ASME Sec VIII Div 1 -2017 edition requirement for FN

UHA – 51 & Fig UHA 51.1

On Wed, Apr 11, 2018 at 9:12 AM, Kannayeram Gnanapandithan <kgpandithan@gmail.com> wrote:
Could you elaborate the mechanism of Hot cracks if ferrite is less than 3

THANKS & BEST REGARDS,
KG.PANDITHAN, BE, IWE, AWS-CWI, CSWIP 3.1,
CONSULTANT-WELDING & QUALITY
Mobile no: +919940739349

On Tue, Apr 10, 2018 at 10:10 PM, PREM SHANKARDUTT NAUTIYAL <prem_nautiyal@rediffmail.com> wrote:
Ferrite number less than 3 can result in hot cracks in ASS.

Regards

Prem Nautiyal

PREM S NAUTIYAL
CELL : 9769316004

From: Kannayeram Gnanapandithan <kgpandithan@gmail.com>
Sent: Tue, 10 Apr 2018 18:11:30 GMT+0530
To: materials-welding <materials-welding@googlegroups.com>
Subject: Re: [BULK] [MW:27668] Stainless steel (SA 312 TP 316L) welding

what is the reason for Hot cracking

THANKS & BEST REGARDS,
KG.PANDITHAN, BE, IWE, AWS-CWI, CSWIP 3.1,
CONSULTANT-WELDING & QUALITY
Mobile no: +919940739349

On Tue, Apr 10, 2018 at 4:51 PM, Lu, Feng <luf@zachrygroup.com> wrote:

3 ~ 8% ferrite are required in the weld to prevent hot cracking

Feng Lu, Ph.D., NDE Level III
Metallurgy and Welding Engineer

Zachry Industrial, Inc.
3600 West Sam Houston Pkwy South

Suite 200

Houston, TX 77042

luf@zachrygroup.com
Office: 713.979.2648
Cell: 512 797 5777
www.ZachryGroup.com

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From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Kannayeram Gnanapandithan
Sent: Tuesday, April 10, 2018 5:56 AM
To: materials-welding <materials-welding@googlegroups.com>
Subject: [BULK]Re: [MW:27666] Stainless steel (SA 312 TP 316L) welding

what is the necessity for ferrite testing on 316L

THANKS & BEST REGARDS,

KG.PANDITHAN, BE, IWE, AWS-CWI, CSWIP 3.1,

CONSULTANT-WELDING & QUALITY

Mobile no: +919940739349

On Tue, Apr 10, 2018 at 4:16 PM, Perumal Govindan <perumalgovindan@gmail.com> wrote:

Hi Prasad,

Ferrite testing is required when it is mentioned in the Client / Project Welding / Construction Specification.

With Kind Regards

P Govindan

On Tue, Apr 10, 2018 at 11:24 AM, 'Shashank Vagal' via Materials & Welding <materials-welding@googlegroups.com> wrote:

NO

On Sunday, 8 April 2018 6:41 PM, Prasad Rode <purode333@gmail.com> wrote:

Dear sir,

I am going to do PQR for SA 312 TP 316L pipe to pipe of 6" and 7.11mm thickness.

I want to know that, i have to go for ferrite testing or not ?

If not, when it is essential to ferrite testing?

Regards
Prasad

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