Page 266 of 561

AG 60 252

Description and uses

Unitor AG-60 is an easy flowing flux-coated brazing alloy containing approx. 55% silver. It is specially suitable for joints requiring high corrosion resistance and strength. For capillary brazing of saltwater pipes, a filler containing at least 50% silver is required for providing the joint with the same degree of corrosion resistance as the metal in the pipe.

AG-60 is Cadmium-free and may therefore be used for brazing workpieces which will be in contact with foodstuff, drinking water, etc. AG-60 is a capillary filler. In order to obtain a good capillary joint, proper mating of the joint surfaces is essential. Ideally, the capillary gap between joint surfaces should not exceed 0.1mm.

of the pipe. Large patches should be TIG welded.

Coat the joint surfaces with flux. Use a neutral or reducing flame, with slight surplus of acetylene. Preheat thoroughly with a good spread. The correct temperature is reached when the flux melts. Melt off a drop of AG60 and spread evenly with the flame. Flux residue should be cleaned off with hot water and a steel wire brush.

Typical uses and types

of joint on Yorcalbro and

Cunifer pipes

In addition to the flux coating on the rod, the joint surfaces must also be coated with flux, e.g. when brazing pipe nipples, unions, patching pipes, etc.

On aluminum bronze and Yorcalbro, use ALBRO Flux 263 PF. On other metals use AG-60/45 Flux-252 PF. Brazing a patch on a pitted pipe. Cut out the patch and make sure it mates well with the pipe surface. Clean the contact surfaces thoroughly, preferably with emery paper. Clean off any burrs. The patch should not be larger than necessary, otherwise it may be difficult to obtain sufficient heat beneath the patch. The larger the patch, the more heat must be applied to the outside of it in order to build up the correct brazing temperature at the centre of the patch. This can result in overheating

3.05

Use additional flux AG-60/45 Flux 252 PF For Yorkalbro use Albro flux 263 PF

265