Monel and Admirality brass
Monel and Admirality brass
(OP)
can we use in a heatexchanger tubes made of admirality brass with monel tubesheet? we have two cases: hydrogen in shell side and cooling water in tube side, the second case is hydrocarbons vs cooling water, temp in shell side is max 140 C.
REGARDS
REGARDS





RE: Monel and Admirality brass
That is assuming that you have relatively pure H2 and the Hydrocarbons don't contain S.
What is the quality of the cooling water?
RE: Monel and Admirality brass
rmw
RE: Monel and Admirality brass
the water are treated by cationic and anionic beds.
could you please advise the electro-chemical potential difference between these materials.
regards
RE: Monel and Admirality brass
Make sure you get an branded Admiralty material, like C44300, with less than 15% Zn and at least 1% Sn.
There are materials being pushed as Admiralty that are really just Arsenical brasses with greater than 15% Zn and very little Sn.
This is even more important as you are going to have relative pure water which can cause rapid dezincification in many brasses. Depending on the how pure you water is I would monitor the tubes very closely.
RE: Monel and Admirality brass
Are you intending to seal weld the tube ends or simply expand them ?
I would certainly find a shop that has experience with these two materials.
What materials are you using for the channels (heads) of the heat exchanger ?
MJC
RE: Monel and Admirality brass
Thank you,
we are expanding in double groove,
the heat exchanger is a hair-pin (Brownfitube) with CS "channel".
regards