5 All-State®
No. 23 Premium
Phosphor—Copper—Silver Alloy Torch
Application General
Characteristics A
brazing rod containing silver to reduce the brazing temperature and increase ductility
with these inherent qualities:
1) High ductility—properties meeting industry requirements are obtainable
if brazing joints are properly designed;
2) Much smaller amounts of filler metal are needed, resulting in a lower brazing
cost; 3) High corrosion and
heat resistivity, excellent electrical conductivity; 4) Can be electroplated or
tinned by hot dipping. Typical
Applications Brazing
copper to copper, and copper to brass or bronze. When working with brass or bronze,
use No. 21 Flux.
Recommended for use on copper plumbing, radiators, air conditioners, refrigerators,
marine and electrical applications.
Not recommended for ferrous metals. Qualities
Tensile strength
—up to 45,000 psi (31.65 kgs/mm2)
Elongation in 2"
—25% Working
temperature—1435°-1450°F (779°-788°C)
Procedures Clean
parts to be joined. Joint clearances may be up to .005" for best results. All-State®
No. 21 or All-State® No.
110 Flux may be used when joining brass
or bronze. Use No. 21 Flux on heavy sections and No. 110 Flux for thin
sections. When flux is required, a
liberal amount should be painted on the joint before heating. Use a large tip
with a carburizing
flame for broad heat. When flux turns clear or copper reaches a dull red heat
apply No. 23 rod until joint
is filled. Do not overheat or remelt. To remove flux use hot water and brush.
The copper color can be restored by
washing joint area with 10 percent sulfuric acid and water solution. Rinse with
clear hot water.
