RE: [MW:31425] SS446 to SS446 (GTAW)

Dear Friends,

 

Remember that SS446 is a high Cr (23-27%) ferritic stainless, in fact it is not heat treatable.

Due to its high Cr content, it is one of the most difficult stainless steels to bend and weld.

For welding, the filler material ER430 provides better ductility due to its high elongation of 25% and should facilitate the bending test.

If the problem persists, consider migrating to ER309 filler metal. It will produce a dissimilar weld, but the ductility improves substantially and it can be bent healthily.

 

Regards,

Ramon Briceno

 

Sent from Mail for Windows 10

 

From: George Dilintas
Sent: Thursday, September 10, 2020 8:49 AM
To: materials-welding@googlegroups.com
Subject: Re: [MW:31420] SS446 to SS446 (GTAW)

 

You should go to a super austenitic filler metal which is going to provide higher ductility. What is the working environment of the weld?

 

Στις Τρί, 4 Αυγ 2020 στις 8:10 μ.μ., ο/η Prasad <prasadloke27@gmail.com> έγραψε:

Dear Sirs,

 

Greetings !

 

We are in process to perform WPS/PQR for SS446 to SS446 combination.

Welding done on 20 mm thick plates using ER430 filler.

 

Test coupon passed for Tensile test but it is getting failed in Bend test .

Need your expertise opinions /suggestions  to complete this WPS/PQR with satisfactory results as per requirements of ASME Section IX .

Especially guidance  to pass Bend test .

 

Thanks in Advance

 

Regards

Prasad Loke

--
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/3c8b9b28-f799-4ad7-a21e-d4a5d7e9c4b7o%40googlegroups.com.

 

--

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

--
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CAPOi40BAVw4CcSCqv-spvTBdm3dzR%2Bm7zzYLs%2BeyfPBQAi%2BsgQ%40mail.gmail.com.