Effects of welding on strength of 301L

[afocuf]

Hi all,

I'm after information on the effects of welding on the strength of stainless steel type AISI 301L but I've drawn a blank so far.

Please could you point me in the right direction.

Thank you

 

[afocuf]

I don't see why it should behave different to 304L, Any thoughts or specific past experience?

 

[mcguire]

The strength of the weld will differ from the base metal to the extent it contains ferrite, the amount of which is a fuction of the precise composition and type of welding, the samme as 304L. It's a pretty minor effect.

Michael McGuire

http://stainlesssteelforengineers.blogspot.com/

 

[btrueblood]

Another drawback is that welding of 301 (without PWHT) can result in sensitization, where carbon in the weld puddle combines with the available chromium, forming a chromium-depleted region that is more susceptible to corrosion. 304 has a controlled, lower carbon content than 301 to reduce this effect, and 304L has a lower carbon content yet. The reduced carbon in 304 reduces its ability to be strain-hardened to very high tensile strengths (which is why we buy 302 springs from drawn wire, but weld our chemical tanks from 304L).

 

[EdStainless]

Most 301 is low carbon so sensitization doesn't bother me.
The welds (assuming no filler metal) will be slightly harder. That is what happens with austenitic stainless.

= = = = = = = = = = = = = = = = = = = =
Plymouth Tube