Anyone use SSF-6 Silver Solder?

[okiedog]

Lately I've been doing a little research on building a brew system. I don't weld, but have done a lot of silver solder on chiller installations. While searching online for food grade silver solder, I ran across SSF-6 on Muggyweld.com. It is 56% silver, has a melting point of 1150F, and forms a very strong joint. That's all I know about it. I'm wondering if it is suitable for silver soldering TC ferrules onto a stainless brew kettle. With such high % silver content, does it darken or oxidize?

 

[okiedog]

A bunch of views, but no replies?! SSF-6 must be a new product that most people have never heard of. I may have to just try this stuff, and find out for myself.

 

[Bobby_M]

I haven't done any brazing on stainless mostly because I don't have an oxy/ac torch set and the rods are just so damned expensive. I've focused on increasing fitting to vessel surface area to make use of the cheaper and easier 430F solders.

 

[okiedog]

I've been really busy. Sorry, it took me so long to get back to this post! Bobby, the 430F silver solder looks like it is easy to work with, and has sufficient stength. From watching your instructional video, it looks easy to work with. The only thing I would worry about is exceeding the 430F by doing something stupid like leaving a dry pot on a burner, or maybe not having the pot centered on the burner. But then, I guess I'd just have to re-solder. With SSF-6, what caught my attention, was the 1150F melting point, and the 70,000 PSI strength. How PSI relates to tensile or shear strength, I don't know. If I ever get around to trying SSF-6, I'll be sure to post the details here.