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Galling of aluminum bronze stem threads

Thread starter peaseman
Start date Jul 10, 2003

Status: Not open for further replies.

Jul 10, 2003

peaseman

Mechanical

I have a requirement for a threaded gate valve stem and threaded bushing that is to be aluminum bronze. The stem will be forged or bar stock and the bushing will be cast. What would be the best UNS number selection of alloy for the stem and bushing that would prevent galling of the threads? Speeds are low, loads are moderate and lubrication is little to none.