How High a Temperature Can Naval and Aluminium Brass Withstand?

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I have come across some equipment constructed out of Naval Brass / Aluminium Brass. Apparently these are common materials for marine applications. e.g. desalination heat exchangers etc.

Does anyone know how high a temp. these brasses can be used at? e.g. is 100 C OK? Also the crevice corrosion / pitting problems that are specific to Stainless Steels; brass does not have these problems, correct?
 
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rollingstein said:
brass does not have these problems, correct?
Depends on the brass. Hit Wiki for "naval brass" to get a quick overview of what alloying constituents help or hurt corrosion resistances of various brasses to various environments.
 
Brasses can have corrosion, including crevice and pitting corrosion, depending on the environment.

Admiralty brass (69 Cu, 30 Zn, 1 Sn) contains 1% tin to inhibit dezincification in many environments.
Naval brass (59 Cu, 40 Zn, 1 Sn)
Aluminum brass (77.5 Cu, 20.5 Zn, 2 Al) Aluminum improves corrosion resistance. It is used for heat exchanger and condenser tubes.[29]

Z. Xia and Z. Szklarska-Smialowska (1990) Pitting of Admiralty Brass. Corrosion: January 1990, Vol. 46, No. 1, pp. 85-88.

See also - Copper Alloys for Marine Environments - http://www.copper.org/applications/marine/cuni/pdf/pub206.pdf
 
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