7 All-State
No. 55 Rubbon® Self-Fluxing
Solder Alloy for Aluminum Torch
Application General
Characteristics All-State
No. 55 Rubbon® aluminum solder was developed
for joining aluminum parts at a low temperature without
the use of a flux. No corrosive flux
residues are involved. Low working temperatures prevent warpage, distortion,
and discoloration of work. Can be chrome
plated but cannot be anodized. Typical
Applications This
alloy is especially used by aluminum window manufacturers to solder mitered joints
without the use of
flux. Ideal for sealing holes in aluminum boats, leaders, gutters, siding, and
castings such as outboard motor/chainsaw/motorcycle
castings. Unexcelled for high strength and long service without the problem of
galvanic action
between base metal and solder. Qualities
Working temperature
—705°-720°F (374°-382°C)
BrineIl hardness
—100
Corrosion resistance
—good Procedures
Aluminum surfaces to be soldered must
be clean and free of all dirt, grease, and oxides. Sections heavier than
1/8" (3.2mm) should be beveled 75 to
90 degrees. Jigs and clamps will keep parts in alignment. Use a carburizing
flame to heat base metal sufficiently
to melt the rod when rubbed on the surface. The rubbing action is required
to give a good bond. Do not apply flame
to the alloy but allow the heat from the base metal to melt the solder.
All-State®
No. 55 solder is made stiff enough to break through the normal oxides found on
clean aluminum. Tinning action
may be improved by wire brushing through the molten solder.
