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All-State®
Silicon Bronze (Bare) *Silicon
Bronze—Bare Filler Wire Tungsten
Inert Gas or Carbon Arc Application General
Characteristics A
bare filler material used for TIG and carbon arc brazing or welding.
Typical Applications
All-State®
Silicon Bronze is used to fabricate and join silicon bronzes, copper alloys and
some iron-base metals. It
has relatively high strength, ductility, free-flowing and crack resistant characteristics.
All-State® Silicon Bronze is
particularly suited for surfaces exposed
to corrosion (not recommended for bearing surfaces). It has wide use in
joining thin gauge galvanized steel,
such as employed in the heating and air conditioning industry.
Qualities Tensile
strength —up
to 58,000 psi (40.79 kgs/mm2) Yield
strength —up
to 25,000 psi (17.58 kgs/mm2) Elongation
in 2" —53
to 55% Hardness
—80 to 100 BrineIl (500 Kg. load)
Meets specifications —AWS
A5.7, ERCuSi-A Procedures
When using either TIG or carbon arc
process, the DC welding machine should be set on straight polarity. An AC
welder may be used but it will not
be as smooth. The base metal is heated with the arc and the alloy is flowed
onto the surface at the same time;
no flux is required. Do not permit the base metal to become overheated (do not
exceed 150°F
(66°C)). Stringer beads are recommended rather than weave beads.
