Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Naval Brass / Aluminium Brass

  1. Jan 2, 2015 #1


    User Avatar
    Gold Member

    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?
  2. jcsd
  3. Jan 3, 2015 #2


    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    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.
  4. Jan 3, 2015 #3


    User Avatar
    Staff Emeritus
    Science Advisor

    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
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook