Dry film lubricant for Steel/Aluminum threaded joint
Dry film lubricant for Steel/Aluminum threaded joint
(OP)
I have a threaded joint that we are having problems with. The male thread is 304 Stainless and the hole is 6061-T6. thread is 8-32. We are starting to get some failures in the threads (gauling, aluminum shavings...). We continuously use the same steel thread and the aluminum part may see as much as 10 cycles.
Would a dry film lubricant be of benefit on the male thread (such as Loctite 39893). I've never used such a product.
Would a dry film lubricant be of benefit on the male thread (such as Loctite 39893). I've never used such a product.





RE: Dry film lubricant for Steel/Aluminum threaded joint
A more permanent solution would be a plating such as electroless nickel. Stainless steel is easily plated with electroless nickel, aluminum used to be difficult but I understand it's common today. You can get a wide range of electroless nickel with additives such as Teflon that will make it even lower friction. You may have to compensate your thread machining to allow for the plating build up.
Hard anodizing the aluminum would be another way to improve it's surface characteristics.
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RE: Dry film lubricant for Steel/Aluminum threaded joint
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P.E. Metallurgy, Plymouth Tube
RE: Dry film lubricant for Steel/Aluminum threaded joint
The product mentioned consists of solid lubricant dispersed in a carrier fluid and some diluent that needs to evaporate. Maybe a assembly paste (that usually has a grease like composition with quite a bit solid lubricant contained in it) might be more suitable.
I suggest you talk to some specialist suppliers that manufacture antiseize compounds and assembly pastes - they usually have a range of products tailored to very specific needs and may be capable offering useful advice based on their experience.
RE: Dry film lubricant for Steel/Aluminum threaded joint
RE: Dry film lubricant for Steel/Aluminum threaded joint
IF practical, install a medium or heavy duty threaded steel insert [NOT helical coil] into the aluminum 'wet with sealant'.
Regards, Wil Taylor
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RE: Dry film lubricant for Steel/Aluminum threaded joint
thread404-435032: Dry film lubricant for Aluminum/Stainless Steel threaded joint