For many years the only recommended way to assemble a frame was by fillet brazing or brazing with lugs, and this was the way 531 frames were constructed. When Reynolds introduced 753, due to the nature of the material, these tubes needed to be low temperature silver soldered.

We now have a new generation of materials in 525, 725, 631, 853 and 953 steels. All of these can be brazed, but the most popular method of assembly is by TIG welding. (on 853 we do recommend that gear fittings etc are silver soldered onto the tubes).

There are many filler wires that can be used on 525/725/631/853 like ER-70S-6.

For materials like titanium, special welding equipment and procedures are required to ensure that oxygen does not contaminate the weld areas. The 953 range is also subject to recommended practice for stainless steels in addition to the skills needed for fabricating with thin wall tubes. On 953, we only have tested the stainless 17-4PH grade wire although other wires may work.