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Joining of dissimilar materials

Joining of dissimilar materials

Joining of dissimilar materials

(OP)
I need some input on how to join ø.016" stainless steel rod to ø.016" Nitinol rod (Nickel Titanium alloy) and achieve as strong a joint as possible. I am considering friction weld but I'm not sure if that will work on these diameters or these two materials. Any input would be appreciated.

Arne

RE: Joining of dissimilar materials

My first thought would be silver solder.

RE: Joining of dissimilar materials

My first thought would be friction welding, though I have no first hand experience with these materials.

RE: Joining of dissimilar materials

Are you trying to make a butt joint, lap joint, or cross wire joint?  The type of joint can preclude some welding processes.

RE: Joining of dissimilar materials

(OP)
This would be a butt joint

RE: Joining of dissimilar materials

In addition to the friction welding already mentioned, many wires are joined by flash welding or upset welding.  You may want to check into those.

RE: Joining of dissimilar materials

I think there may be a lot of ways.  It depends on how many, what strength and what resources you have available.   For a few I would suggest silver brazing (often called silver soldering).  If you have many to do on a long-term basis other methods may make more sense.   
However we are in the brazing business.  It doesn’t make my answer wrong but it certainly comes from particular viewpoint.    
We sell a little starter brazing kit.   It has the flux and the braze alloy as wire and as cut bits.  We also have information on brazing on our website at www.carbideprocessors.com  We you go the web site go to the brazing book and start with the chapter on “brazing for the first time” or “basic brazing”

Tom

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