15
All-State®
Bi-Metal
Strip Silver Brazing
Alloy for Tool Tipping
Torch, Furnace or
Induction Application
General
Characteristics
All-State®
Bi-Metal is a sandwich type brazing alloy composed of three layers of material.
The center layer is
composition
metal .010" (.3mm) thick. A layer of All-State®
No. 164 brazing alloy .005" (.1mm) thick is laminated
to each
side of the composition metal making a laminated strip .020" (.5mm) thick. The
prime purpose of the
composition
metal is to absorb shock and stresses in the brazed joint.
Typical
Applications
Recommended
for tool tipping and brazing applications involving tungsten carbides, stainless
and high alloyed
steels.
The high nickel content of All-State®
Bi-Metal gives excellent “wetting” on surfaces of metals that have
refractory
oxides of chromium, nickel or vanadium on them.
Qualities
Tensile
strength
—up
to 55,000 psi (38.68 kgs/mm2)
Working
temperature—1500°F (816°C) (approx.)
Procedures
Thoroughly
clean joint area. Surfaces to be joined should be ground to obtain a tight fitting
joint. Cut All-State®
Bi-Metal
strip to joint shape. Paint all joint surfaces and brazing alloy with All-State®
No. 110 or No. S-200 Flux.
Preplace
alloy in joint. Heat with a neutral flame keeping torch in constant motion.
Do not overheat carbide tip.
Discontinue
heating when alloy flows. Allow to cool slowly to prevent cracking of carbide
tip. Remove flux with
hot
water.
