Bob,
I hadn't heard that one, but I'll ask Bruce. We talk frequently. The
element that will certainly have an effect here, although I don't
know how much; is that brazing a lug using brass rod happens around
1750 degrees or so to get menting and penitration, in ideal
conditions. Fillet brazing with the same brass rod takes place around
1450 degrees or thereabouts. It's a significant difference. Also how
the joint cools is very critical. A small fillet with brass may pass.
I think the test involves a rockwell hardness of the steel after
brazing. If it passes the hardness test then it passes the hardness
test. I still think it best to use these materials according to the
manufactures specs. or don't use it at all. Just my opinion.
Brian Baylis La Mesa, CA Long time full-blown non fan of 753(along with several types of "foo- foo" tubes). It's just not my BAG, baby!
on
to this same topic once a year or so
BOB FREITAS
the door in MILL VALLEY,CA