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Effects of welding on strength of 301L

Effects of welding on strength of 301L

Effects of welding on strength of 301L

(OP)
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

RE: Effects of welding on strength of 301L

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

RE: Effects of welding on strength of 301L

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/

RE: Effects of welding on strength of 301L

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).

RE: Effects of welding on strength of 301L

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.

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Plymouth Tube

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