Fixture material can be mild steel or stainless steel.

Then clean the surfaces using a degreaser or soapy water; Now, position the metal properly. Upgrading the arc brazing process and widening its field of application rely on the development of brazed steel–aluminium thin-sheet structures with a lighter weight, such as high-strength extra low-carbon (interstitial-free (IF)) steels, 17 most often with aluminium and zinc coatings, and aluminium alloys. Stainless steel or Inconel springs are often used with fixtures to accommodate differences in expansion. Rods for Stainless Steel. Reddit gives you the best of the internet in one place.

Harris® Stay-Silv® Black All Purpose Extra High Temperature Brazing Flux 1/2# Jar (For Stainless Steel, Carbide, Heavy Parts And Prolonged Heating Cycles) Airgas Part #: HARSSBF1/2 SDS

Stainless steel or Inconel springs are often used with fixtures to accommodate differences in expansion. You always want to use a technique that only flows the filler rod and does not actually melt the base metal. However, for repetitive furnace brazing operations and for dip brazing to avoid flux bath contamination, fixtures of nickel, Inconel, or aluminum-coated steel are preferred. TIG Welding Rods for Aluminum. Make welds quickly with these fast-melting rods. The silver solder’s flux wets the steel and brass, and no machine work is needed as the brazing rod has an outstanding finish. These rods create stronger welds than standard TIG welding rods for aluminum. I find that using the rule of 33 (33 pps, 33% on time, 33% background) provides a little bit of puddle agitation and helps keep the heat down too. If both surfaces are clean, dry, and roughened up, epoxy will have no problem adhering to both. A brazing process is widely used to produce cooking pots with an aluminum to stainless steel junction. High-Strength TIG Welding Rods for Aluminum. I must admit I have never tried to braze anything other than tubing connections. Use it with the Safety-Silv ® high silver brazing filler metals (AWS BAg series) on the above base metals, and the Stay-Silv ® phos-copper-silver (AWS BCuP series) on copper to brass.

Fixture material can be mild steel or stainless steel.

Brazing application characteristics and development history. Brazing Alloys for Joining Aluminum to Copper. I would recommend epoxy, either epoxy putty, or 2 part liquid.

Brazing of a stainless steel to various aluminum alloys was carried out using an Al-Si filler metal and a fluoride-active flux in air. The solders/brazing rods/welding techniques that work for either aluminum or steel are incompatible. Precleaning Welding and Brazing Stainless Steel 07/25/2012. The Issue of Coefficient of Thermal Expansion (CTE) Mismatch. There are a variety of options for brewers looking to weld stainless steels.