Compare corrosion of 304Lss to 316Lss for SO2 and SO2 queous
Compare corrosion of 304Lss to 316Lss for SO2 and SO2 queous
(OP)
I recently had some pipe installed for an SO2 line but I made the mistake of having fittings for two different projects sitting next to each other. So when the contractor finished their work I noticed that they had mixed in a few 304Lss fittings with the rest of the project that was 316Lss.
My question is does SO2 corrode 304Lss more than 316Lss? Also how do they compare with aqueous SO2 (sulfurous acid)?
You may have saw this post under chemical engineering, I noticed I accidently placed it under the wrong topic.
My question is does SO2 corrode 304Lss more than 316Lss? Also how do they compare with aqueous SO2 (sulfurous acid)?
You may have saw this post under chemical engineering, I noticed I accidently placed it under the wrong topic.





RE: Compare corrosion of 304Lss to 316Lss for SO2 and SO2 queous
http://www.sulphuric-acid.com/techmanual/Materials...
Although the 304L usually has better corrosion resistance than plain 304 or 304H.
Some of what you are asking depends on the service temperatures.
You might need to be more concerned about the weld joints and need to ask a welding/metallurgist expert about this aspect.
Good luck
RE: Compare corrosion of 304Lss to 316Lss for SO2 and SO2 queous
To form sulphuric acid the reaction is SO3 + H2O --> H2SO4.
From reading I have seen that 316L is the standard to use on both SO2 and H2SO3 services but I was wondering if it really makes too much of a difference if you use 304L instead.
RE: Compare corrosion of 304Lss to 316Lss for SO2 and SO2 queous
If it ain't broke, don't fix it. If it's not safe ... make it that way.
RE: Compare corrosion of 304Lss to 316Lss for SO2 and SO2 queous
RE: Compare corrosion of 304Lss to 316Lss for SO2 and SO2 queous
Thanks Everyone!
RE: Compare corrosion of 304Lss to 316Lss for SO2 and SO2 queous
If it ain't broke, don't fix it. If it's not safe ... make it that way.