Welding Stainless to Steel

[ewalk]

I need to weld some 304 stainless to AR steel.

I plan to use ER70S-6 wire and 75/25 gas.

This will be a fillet weld and will not be a load bearing weld.

I have been told that this will crack and fail, What are your thoughts?

 

[metengr]

You should NOT use this filler metal for joining 304 to AR plate. The AR (abrasion resistant) plate is a low alloy steel, and using a carbon steel filler metal, such as ER70S-6, will result in cracks after solidification.

You need to use either ER 309 or Inconel (Ni-base filler metal).

 

[EdStainless]

There is nothing to add when the answer is correct and complete.
Use 309.

= = = = = = = = = = = = = = = = = = = =
Still trying to help you stop corrosion.
formerly Trent Tube, now Plymouth Tube
eblessman@plymouth.com
or edstainless@earthlink.net

 

[PEinVA]

Is calculation of the strength of the weld the same as AISC provides except using the properties of 309 for this application?

RC
All that is necessary for the triumph of evil is that good men do nothing.
Edmund Burke

 

[ali07]

I have a similar situation connection of stainless steel guard rail with angle inside the building. I need to weld it, can somebody guide about that electrode properties.

 

[arunmrao]

Thanks metengr I learnt a new abbreviation today AR.

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