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Black Oxide is a chemical surface conversion of metals forming an integral protective surface, while maintaining the dimensional integrity of the part. Along with a post treatment, corrosion resistance of 72 to 144 salt spray hours is possible.
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| | A NEW BLACK OXIDE PROCESS FOR CONVERSION COATING OF BRAZED COMPONENTS AND DISSIMILAR METAL ASSEMBLIES.
While black oxide conversion coating can effectively be applied to diverse metals including carbon, alloy and stainless steels;
copper, brass, bronze; die cast zinc powder metal and cast iron; getting satisfactory results on brazed or welded parts has always been difficult.
For example, the standard black oxide process for steel does not produce a conversion of the copper brazing material.
Now, through a continuing program of application development, Cleveland Black Oxide has perfected the Bi-MetTM process
which produces a uniform color on parts which have been brazed, most welded parts (unless the welding medium contains over 10% nickel or chrome) and some
silver soldered parts.
In addition to added aesthetic appeal, the Bi-Met process adds the same corrosion resistance and
performance benefits achievable with standard black oxide. The resulting surface won't chip or crack,
holes and threads don't fill with coating material, no dimensional changes occur, and there is no need to
protect internal cavities while treating. Because the conversion process is uniform, all exposed
surfaces, even internal cavities get corrosion protection.
If your brazed component or multiple metal assembly could benefit from improved appearance and corrosion resistance,
send a product sample to Cleveland Black Oxide for evaluation at no obligation.
CALL (216) 861-4431. FAX (216) 861-0711.
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