Stainless Steel and Anti-Galling Lubricants
Stainless Steel and Anti-Galling Lubricants
(OP)
I am trying to determine if Colloidal Graphite in Isopropanol (MIL-L-24131) [CGI] can be used with stainless steel to prevent thread galling.
I must follow the guidance in NSTM [Naval Ships Technical Manual] CH 075 but it is unclear whether the use of CGI must be limited to stainless steel in applications <1000 deg.F or whether CGI should not be used at all with stainless steel.
I have tried numerous internet searches but have not been able to find clarification regarding this specific issue. Even if you are not familiar with the specific military references, any information/experience in private industry would be appreciated.
I must follow the guidance in NSTM [Naval Ships Technical Manual] CH 075 but it is unclear whether the use of CGI must be limited to stainless steel in applications <1000 deg.F or whether CGI should not be used at all with stainless steel.
I have tried numerous internet searches but have not been able to find clarification regarding this specific issue. Even if you are not familiar with the specific military references, any information/experience in private industry would be appreciated.





RE: Stainless Steel and Anti-Galling Lubricants
RE: Stainless Steel and Anti-Galling Lubricants
A better anti-seize would be one based on Boron Nitride, White Graphite. We used this type lubricant very suscessfully on S/S and Ni alloys at 1250°F. Our specification was to use this material above 900°F.
Also the silver base lubricants worked better at your temperature than the copper based ones.
RE: Stainless Steel and Anti-Galling Lubricants
Thanks for the info. I need to be able to formally reference the info you passed along- now that I know why colloidal graphite is not used for high temperatures, do you know where I can find that info, either on-line or a reference book?? Thanks :)
RE: Stainless Steel and Anti-Galling Lubricants
You should perform a site search here at Eng-Tips for this subject as it has been covered extensively. For example, this thread:
Thread404-32366
has good references. Look at everything posted by member Kenneth.
Regards,
Cory
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.
RE: Stainless Steel and Anti-Galling Lubricants
RE: Stainless Steel and Anti-Galling Lubricants
I posted a solution for galling in another thread. Thread338-52413 Galling on stainless steel thread under seawater condition. Try there!
LeGrande
RE: Stainless Steel and Anti-Galling Lubricants
I'll bet you used "Sloan's Liniment" as penetrating oil too.
RE: Stainless Steel and Anti-Galling Lubricants
Never heard of Sloan's. I also learned that the last thing to use on those screws was any kind of pene. oil-they would always seize and break right off when I tried to loosen them if I tried oils. However, for some reason I can't remember I never tried one of the nickel anti-seize compounds. The MgO worked well enough, and I had a big supply of screws.
IIRC the threaded holder was N-155, but I can't remember what the screws were-other than expensive.
RE: Stainless Steel and Anti-Galling Lubricants
Sloan's was a liniment that had an oil of wintergreen base.
Oil of wintergreen is very good penetraing oil as it has a very low surface tension. I first saw it used on AC steam turbine casing bolts.
We had thousands of B-7 bolts that had to undone while cooling from 600°F during an overhaul. To faciltate there removal the bolts were DAGed(collodial graphite) prior to installation. It was found that the application of a little penetrating liguid (Sookie, SPS, etc.) would faciltate thier removal. On S/S we used a copper based lubricant and usually had no problems.
RE: Stainless Steel and Anti-Galling Lubricants
http://www.socousa.com/showprod_detail.asp?pid=8O4&type...
RE: Stainless Steel and Anti-Galling Lubricants
RE: Stainless Steel and Anti-Galling Lubricants
IIRC Neolube is graphite in acetone or alcohol, and Unclesyd has already pointed out it's temp. limit.
From use at our plant we also learned there are better antisiezes for 600 deg F.