Tek-Tips is the largest IT community on the Internet today!
Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!
-
Congratulations TugboatEng on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!
Admiralty Brass and chlorides
- Thread starter eml
- Start date
Can you provide additional details on the type of chlorides (sodium, calcium, etc.), temperature, pH, etc.? Also, what type of admiralty brass are you using (composition, product form, heat treatment)? Chlorides produce de-zincification in high Zn copper alloys, but this effect is retarded by additions of Sn. Inhibited admiralty Cu may also contain P, Ar, or Sb which further improves resistance to de-zincification. In general, this type of alloy is categorized as having "fair" resistance to CaCl2 and "poor" resistance to NaCl.
The inhibited Adm. brasses may be more res. to dezinc., but they become MORE susceptible to SCC.
Regular Adm. brass does *fairly well* out on the clean high seas (well, at least they used to be clean many years ago), but in semi-polluted harbors they fail quickly (sulfides).
The Cu-Ni's do much better.
Regular Adm. brass does *fairly well* out on the clean high seas (well, at least they used to be clean many years ago), but in semi-polluted harbors they fail quickly (sulfides).
The Cu-Ni's do much better.
- Status
Similar threads
- Locked
- Question
- Locked
- Question
