It probably flows around 500 - 600 degrees. The "coolest" flowing
silver-bearing solder I am familiar with is 96% Tin, 4% Silver. It flows at
around 430 degrees F. Harris Stay Bright is one commercial version. Radio
shack has a silver-bearing solder coiled up in a tiny tube (at an outrageous
per-lb price), also of 96 - 4 formulation. Silver-bearing solders are best
fluxed with killed hydrochloric acid in paste or liquid form; such as Harris
Stay Clean. 96-4 has tensile strength of around 14,000 lbs, which should be
enough for a die filer. The low temps of 96 - 4 make it an attractive
choice when warping is a concern.

Bob Swinney

"jim rozen" wrote in message
...
In article t, RoyJ
says...

A2 needs to be hardened by going up to 1775F, then tempered at various
temps up to 1000F, (first peak is at 500F but that is too low). Can you
silver solder it at something like 800F or less?

Silver-bearing soft solder, Eutectic 151. Not as good as real
silver solder but has about three times the tensile strength
of lead-tin. Flows below 800F.

Jim


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