Tuesday, April 10, 2018

Re: [BULK]Re: [MW:27669] Stainless steel (SA 312 TP 316L) welding

Hi, 
Thus sa312 tp 316 has moly therefore  moly is a promoter for ferrite and if there is excess fn in weld metal after it causes hardness and chances for brittle fracture increases that is why we need to check fn no. For 316

Thanks

On 10-Apr-2018 5:41 PM, "Kannayeram Gnanapandithan" <kgpandithan@gmail.com> wrote:
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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