High Silicon Cast Iron Anodes
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For over thirty years, High Silicon Cast Iron Anodes have been used
for galvanic cathodic protection. The original grade (ASTM A518 Grade
1) worked well in fresh water applications but was consumed in saline
waters. In the late 1950's the addition of
a small amount of |
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chromium reduced consumption in all
electrolytes. The chromium alloy was patented and marketed under the
name of Durichlor 51. When the patent expired, several manufacturers
produced this alloy to ASTM A518 Grade 3.
The High Silicon Chrome Iron Anode has been used extensively in many
areas of North America. For the past ten years, many "Stick Bar" and
"Tubular" anodes have been cast in England, and shipped to the North
American market.
In 1987, Anotec Industries started making
chill cast stick anodes in North America. Chill cast technology
provides a denser, more uniform structure than is evident in sand cast
Stick Anodes. The chill cast metal is similar to the structure in spin
cast tubular anodes, which have a successful and proven track
record in cathodic protection. Chill cast stick anodes are physically stronger
than sand cast anodes. This added strength results in less
field breakage during transportation and installation.
Accelerated corrosion tests have shown that Anotec stick anodes perform
better than sand cast anodes in chloride and sulfate environments.
Anotec has also developed a complete line of Centertec tubular anodes,
manufactured to the same rigid standards. These anodes feature an extra
wall thickness at the center-connect area and a one piece low resistance
cable connector. Centertec Anodes are available in a wide range of
industry standard sizes. Specialty and small FeSiCr anodes from Anotec
are also available; contact Brance-Krachy with your specifications.
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