Joining of dissimilar materials

[norse]

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

 

[testy]

My first thought would be silver solder.

 

[CoryPad]

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

 

[GRoberts]

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

 

[norse]

This would be a butt joint

 

[GRoberts]

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.

 

[tomwalz]

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

http://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