Silver Brazing Stainless Steel: How to Bond to Brass w Silver Solder Paste

Silver brazing stainless steel to brass with SSQ-6 silver solder paste

In this video, we demonstrate how to bond dissimilar metals with silver solder paste. We used a propane torch and a 1 oz syringe of SSQ-6 silver solder paste to join the parts. SSQ-6 is similar in formulation to our SSF-6 silver solder rods, in a convenient syringe format for delicate or precision applications.

To ensure optimal bonding, make sure both parts are clean and devoid of oxidation or contaminates before starting the brazing process. Affix the syringe tip if necessary, then apply SSQ-6 silver solder paste in a circular fashion to cold metal. SSQ-6 flux is incorporated into the silver solder mixture, so there’s no need to apply a separate flux.

Notice the technique: After precleaning the parts and applying the solder, Mike spreads the silver solder evenly around the entire joint and applies the residual solder to the top both parts. Use the torch to heat both metals broadly, focusing just a bit more heat to the thicker metal to ensure even heating.

In this demonstration we use a propane torch, but oxyacetylene and MAPP gas are also acceptable torches, as long as the torch is capable of heating the parent metals to the SSQ-6 working temperature of 1050°F. Failure to reach this melting point will result in improper or failed bonds. {Thicker metals may require oxy-acetylene}

Continually move the torch around the entire circumference of the joint, flowing the solder and flux into the joint.

After brazing is complete and the part has air cooled, you may remove excess flux with warm water and a wire brush.

The finished bond is impressive: SSQ-6 is as strong as a MIG weld, with an inexpensive brazing torch.



NotePlease observe all AWS Safety & Health Guidelines when using Muggy Weld products.

Caution: Do not store near edible items. If you refrigerate SSQ-6, please store in a “chemical only” designated refrigerator.