9
All-State®
No. 24 AC/DC* Phosphor
Bronze Electrode for Copper Base and Some Ferrous Metals
AC/DC Reverse Polarity (Electrode +)
All Position General
Characteristics Exceptional
control and ease of manipulation on both AC and DCRP. All-State®
No. 24 AC/DC produces sound, porosity
free deposits on bronze, brass, copper, cast iron, and steel. Smooth deposits
can be made in all positions, and
the slag is easily removed. Typical
Applications Recommended
for high-strength welds on phosphor bronze materials. This electrode can also
be used to join copper
and brass. It is commonly used as an overlay on cast iron or steel and to join
dissimilar metals. Superior for
maintenance repair and fabrication
of valve bodies, seats, bearings, bushings, gears, propellers, impeller blades
and housings.
Often used to replace torch applications for frictional wear on heavier sections.
Qualities Typical
mechanical properties Tensile
strength —65,000
psi (45.71 kgs/mm2) Yield
strength —37,000
psi (26.02 kgs/mm2) Hardness
—85 to 100 BrineIl (500 kg. load)
Elongation in 2"
—min. 40%
Procedures Base
metal must be clean and free of all moisture. Do not let electrodes absorb moisture
because this causes porosity
in the weld. Preheat copper base metals to 700°F (371°C), phosphor bronze
to 450°F (232°C). These temperatures
must be maintained during welding and between passes. No preheat is necessary
when applying to
thin copper sections or ferrous metals.
