904 Stainless steel

[jcc1163]

I have a project that requires welding of 904L stainless steel to ordinary strength carbon steel. What filler material is recommended for this?

[urch55]

I have a project that requires welding of 904L stainless steel to ordinary strength carbon steel. What filler material is recommended for this?

First thought that comes to me is 309 I am sure others will correct me if I am wrong. 309 does work great for the intended purpose....
Bob :cool:

[SundownIII]

What the heck is 904L Stainless used for. Where did you get it.

That's a new one on me. Looked in my Miller references as well as the "Bible" and don't even see it listed.

[urch55]

Hey there Sundown. I suspect He meant 304 sometimes when the steel is stamped it not too clear. I have had to take a magnifying glass to some. that 's if the ends are not color coded..
Bob :cool:

[SundownIII]

Yea Bob,

Just thought maybe he'd come across some new "exotic metal".:D

[myistar]

as others said, Yes, 304 Stainless is a common grade, use 308L for stainless to stainless welding, and 309L for stainless to mild steel welding.

[Miller Brad]

AWS 2007 stainless code recommends 309 for <.3% Carbon steel, and 312 for >.3% Carbon steel.

904L is extremely corrosion resistant in caustic environments.
-acid processing plants
-pulp and paper operations
-equipment for cooling seawater
-oil refining
-and environmental equipment.

[urch55]

Yea Bob,

Just thought maybe he'd come across some new "exotic metal".:D

I guess that could easily happen with today's tectology and advancements for sure.
Bob :cool:

[davedarragh]

I have a project that requires welding of 904L stainless steel to ordinary strength carbon steel. What filler material is recommended for this?

"904L" stainless is a high alloy, austenitic steel with high Nickel (23-28%) and Chromium (19-23%) contents.

It was originally designed for it's resistance to sulphuric acid, and is commonly used in Europe and Australia.

Stateside alternatives are 316L, 6Mo, 2205, and Super Duplex.

X1NiCrMoCuN25-20-5 is the "official" name as listed in ASTM B625-99

Lincoln Blue Max NiCro 31/27 Electrodes (E383-16) are designed for joining these types of steels, as well as Alloy 28 and dissimilar metals.

Hope this helps

Dave

[urch55]

Hmmmm Thanks dave for clearing that up. It's no wounder few of us have not heard about 904 stainless. I guess that is what the search button is for.:)
Bob :cool:

[davedarragh]

Hmmmm Thanks dave for clearing that up. It's no wounder few of us have not heard about 904 stainless. I guess that is what the search button is for.:)
Bob :cool:


The Schaeffler and DeLong Diagrams are indespensible resources in the Metallurgical studies of Austenitic, Martensitic, and Ferritic Stainless and alloy steels.

Dave

[jcc1163]

Thanks for the info. I called around and was also told that ER625 was a compatable filler wire for this application.

[davedarragh]

Thanks for the info. I called around and was also told that ER625 was a compatable filler wire for this application.

Try Lincoln's Blue Max LNT/LNM NiCro 60/20 for TIG or MIG applications for alloy 625.

GTAW/GMAW 100% Argon

GMAW 0-95% He/Balance Argon

GTAW in 1/16, 5/64, 3/32" Dia in 4.4# tubes and 22# ctns.

GMAW .040, .045" Dia in 33# sppols.

Hope this hleps get you going

Dave

[SundownIII]

Thanks Dave. Very informative.

Heck, I don't need no dang book, I got Dave's e-mail address.:D

[davedarragh]

Thanks Dave. Very informative.

Heck, I don't need no dang book, I got Dave's e-mail address.:D

Sundown: Thanks for the kind words, feel free to e-mail me anythime.

Dave