Per Cent elongation for 304L tube?
Per Cent elongation for 304L tube?
(OP)
Hi all, I have trawled the web looking for data on 304L stainless steel tube. I can find plenty of websites giving % elongation to tensile failure but I cannot find a figure for % elongation to the materials elastic limit. Is this data not published at all? Thanks very much.





RE: Per Cent elongation for 304L tube?
RE: Per Cent elongation for 304L tube?
In general, you can calcualte the extension (strain) at yield by dividing the yield stress by the elastic constant. So for Grade 304L with a yield stress of 25,000 PSI and assuming a elastic constant of 29 E+6 PSI, you would get an extension at yield of .0009 or 0.09%. Of course, the elastic limit is less than the 0.2% offset yield stress, so, for annealed material, the extension at the elastic limit would be much less.
For cold worked material, the yield stress would be higher and the difference between the yield stress and the elastic limit would be less, but the end result is that TVP was correct in that it would be unlikely for the elastic extension to be over 0.2% (this would require a yeild stress over 50000 PSI).
rp
RE: Per Cent elongation for 304L tube?
RE: Per Cent elongation for 304L tube?
But what makes these useful alloys is that with their high ductility you can go to loads that result is some yielding and all that you get is some general stretching and the load is distributed.
With 304L tubes is the tensile testing was done on tubular samples you should have elongations over 55%. Flat plate or cut samples will be around 40%.
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Plymouth Tube
RE: Per Cent elongation for 304L tube?
RE: Per Cent elongation for 304L tube?