Plate Heat Exchangers

It will largely depend on the liquid you are moving through the cooler.

What is both the liquid being cooled and the cooling liquid?

DM water with corrosion inhabitor in hot side

sea water (service water with 10PPM sodium hypochlorite) in cold side

you mean sea water or service water? is the water deaerated?

i think you should consider the corrosion resistance of your material, carbon steel, in contact with an aerated water..

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corrosion & rust prevention

The decision on material is not based on availability.

It depends on

a) What the end use demands (note it is use not user, we usually give mistakenly more importance to the second one, even at the cost of first)

b) What the codes demand (though again usually taken to be the last word, this do not overrule the first)

c) The availability and cost of the material is an option only after the fisr two are met, and satisfied by the members of the set.

PS: there is difference in the mechanical properties of both, though there is over-laps but the minimum properties are different.

The BIG difference is a 15% reduction in strength.

You should be able to substitute for the gr.60 with no problems.

uhhhhhhhhhhhhh, except for the strength.

youre not putting the thing on a space ship are ya????

No, I made the apparently wrong presumption that this heat exchanger was being built to a recognized pressure vessel standard. But hey, if even the purchase order says to be built to a standard, why follow that? Heck, why not go with gage thickness steel (0.32") instead of plate. Or instead of 516-60 why not save even more money and go with a more readily available bamboo shoot or balsa wood? While we are at it, lets just do away with all those other "rules" and neglect to do any NDT work on this heat exchanger too.

You first asked if the freaking material would work. It will work, if you already have your own jackass answers to everything, than why even ask the question to start with?

Why not at least grow the balls necessary to list yourself as something besides an un-known guest anyway?

Have a nice life, butt head...

No problem to use SA 516 Grade 60 instead of SA 516 Grade 70, taking into consideration the lower allowable tensile strength of Grade 60 compared with Grade 70, which will affect on plate thickness.