Soldering Copper to Phosphor Bronze

I've no idea on Soldering it, i'd guess not but never tried.

Could you not 'pin' on a round terminal with a screw or bolt?

I never tried that, but what I would do is try it on a text section first. Silver solder and solder should be tried. The criterion of "solid" can be evaluated by a visual inspection and with a microscope. The criterion of "reliable" can be tested during a 1000 hour burn-in using an intermittent bath of salt water. Then it can be examined for corrosion rates compared to simultaneous evaluation of a control group of solder connections using more standard materials. My guess is yes, the solder connexion will be solid and reliable with solder or silver solder. What is the percentage of phosphorus in the bronze? Copper can be soldered easily with or without stranding.

It should be about as good as anything, eg: they soldered the wires to the P-B contact springs in old-style telephone relays.

not much difference

haye you considered spot-welding instead of soldering

Soldering should work fine. Welding/brazing might be a touch better, but not in practical terms if the soldering is done correctly.

Requires a largish *lap* joint, scrupulous cleanliness, degreasing, plenty of flux and nearly too much heat. No butt, corner or tee joints allowed.

--Winston

No problem with 40/60 tin lead solder and rosin flux.

George H.

Ok,

Thanks everyone.

Darren Harris Staten Island, New York.