MONEL 400 to SS304 Welding 1

• Oct 16, 2010

• #2

rustbuster

Petroleum

Jul 7, 1999

289

I would use ENiCrFe2 (Inconel 182) and ENiCrFe-2 (Inco-A)

 

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• Oct 17, 2010

• Thread starter
• #3

ak1965

Mechanical

Jul 28, 2007

158

Thanks Rustbuster


While using Inconel 182, will its higher iron content cause dilution problem in weld pool?

I mean SS 304 and Monel has diffrence of Fe content!

Please comment.

 

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• Oct 17, 2010

• #4

MikeMet

Chemical

Dec 11, 2008

164

Special Metals own literature recommend using Inco 82 or Inco 625. I would prefer the Inco 625 which also has higher strength that Inco 82

 

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• Oct 18, 2010

1
• #5

stanweld

Materials

May 9, 2003

2,906

ak1965,
I think you are confusing the iron dilution problem when using E/ERNiCu-7 alloy weld filler metal when diluted with iron from the 304 ss.

 

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• Oct 18, 2010

• Thread starter
• #6

ak1965

Mechanical

Jul 28, 2007

158

stanweld


I did not confuse rather wished to clarify as there is a difference of Fe contents in SS304 and Monel 400.

 

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• Oct 18, 2010

• #7

stanweld

Materials

May 9, 2003

2,906

Iron dilution is not a factor when welding the dissimilar alloys with the filler metals recommended above.

 

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• Oct 22, 2010

• #8

tab1999

Mechanical

Aug 8, 2006

47

Seems like I remember some cracking issues from joining Monel to 304 in pipe welds?

" There is no Shortcut to anyplace worth going "

 

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• Oct 22, 2010

• #9

stanweld

Materials

May 9, 2003

2,906

tab1999;

Hot cracking is a very real possibility when welding with Monel welding filler metal. Even when welding with appropriate Nickel base filler metals or Nickel filler metals. hot cracking in the Monel HAZ can be a problem due to the large liquidus to solidus temperature range of Monel (even when properly cleaned).

Cracking in the HAZ of Monel castings is a greater possibility. Depending on the melting practice used for the Monel casting it may prove unweldable.

 

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