Originally Posted by
SJX426
Frame builders have a choice of brazing with silver or brass. Brass requires a higher temperature flame. Home builders like silver because the equipment requirements and the lower temperature. Lower temperature has less of an impact on the frame material. Both are acceptable. The issue is the cost of the silver rod. This is much like soldering but with much different temperatures and rod material. A bunch of metallurgy considerations.
The strength is not in the silver material but in the bond of the joint, hence the flux to ensure good bond between dissimilar materials.. Silver can be used to fill.
If you want some interesting information about frame building, go over to the frame building forum. Lots of really good info there.
Thank you for your response. I have posted in that forum occasionally and read it regularly. That was
my understanding, based on a comment by some guy named Dave Moulton
regarding brazing materials. I may have, as I said, misunderstood what he wrote. Many decades ago I did some basic brass brazing on a bike, (frame add-ons) bitd, as well as some silversmithing, and blacksmithing... my long-ago repaired Ron Cooper is already on a few threads. I'll try to find the reference and post.
Best, Eric